CN115520947A - Wastewater physicochemical treatment system capable of measuring yield of dewatered sludge and operation method thereof - Google Patents

Abstract

The invention relates to the field of sewage treatment, in particular to a wastewater physicochemical treatment system capable of measuring the yield of dehydrated sludge and an operation method thereof. According to the invention, the PLC control system is connected with the dehydration device and the dosing device, the PLC control system calculates the weight of the dehydrated sludge according to the dehydration times of the dehydration device, and judges whether the water quality condition and the dosing condition of the dosing device are abnormal or not according to the weight of the dehydrated sludge, so that scientific and accurate operation management and solid waste management of sewage physicochemical treatment are formed.

Description

Wastewater physicochemical treatment system capable of measuring yield of dewatered sludge and operation method thereof

Technical Field

The invention relates to the field of sewage treatment, in particular to a wastewater physicochemical treatment system capable of measuring and calculating the yield of dewatered sludge and an operation method thereof.

Background

The intelligent operation (unattended operation) of the wastewater treatment facility is a specific form of 'Internet + environmental protection treatment', is an important mode for solving the environmental protection industrialization, and is a main means for realizing low cost, specialization, scale, intelligence and no humanization of the wastewater treatment facility. The operation management of the materialized sedimentation tank in the wastewater treatment facility relates to the high-frequency sludge discharge operation and the sludge management, is key work in the intelligent operation of the wastewater treatment facility, simultaneously, the sludge production is also a data basis for judging the water quality change condition or the materialized treatment effect, and has an important indication effect on the intelligent operation of the wastewater treatment facility. The sludge management of sewage treatment comprises sludge warehousing, sludge ex-warehouse, sludge account, sludge transportation and outward transportation treatment of a sludge qualification unit, and the sludge production amount runs through the whole process of sludge management of sewage treatment and is key data of sludge management of sewage treatment.

The weight of dewatered sludge of the existing sewage physical and chemical treatment system is not detected generally, the dewatered sludge is solid waste and is treated according to the requirement of solid waste treatment, a sewage disposal unit or a sewage treatment unit transfers the dewatered sludge to a solid waste warehouse, and when the dewatered sludge is transferred by a qualified solid waste treatment unit, a vehicle for transporting the dewatered sludge obtains the weight of the dewatered sludge carried by the vehicle when pounds of the dewatered sludge pass outside the sewage disposal unit. Currently, the weight of the dewatered sludge is usually obtained in the solid waste transfer treatment process and is directly monitored by weighing. The weight data of the dewatered sludge obtained under the condition and the detection time of the weight data of the dewatered sludge are the time for weighing the dewatered sludge during solid waste treatment transfer, the monitoring time is limited by a solid waste treatment unit and the storage time is monthly, the time is often more than 1 month or even more than months, the timeliness is poor, and the indication value of the operation management of sewage treatment is close to zero. In addition, the weight of the dewatered sludge is obtained by a direct weighing monitoring mode in a short time, and a weighing device is required to be configured. The weight of the dewatered sludge produced in the daily sewage treatment is calculated by taking "ton" as a unit, so that the configured weighing equipment is either a wagon balance or a weighing equipment with the minimum weight of more than "1 ton", and the weighing equipment has large investment at one time and occupies large area. Moreover, the weighing equipment is used for directly weighing, large actions such as bagging and loading, in-plant transportation, weighing and the like need to be completed, the labor is complicated, and the workload is large. Therefore, the direct weighing mode for detecting the weight of the dewatered sludge has the problems of manual operation, large workload, long monitoring time, high investment cost, large occupied area and the like, so that the frequency and timeliness of the detection of the weight of the dewatered sludge are limited.

Patent document No. CN211595286U discloses a materialized wastewater treatment device, which comprises a wastewater collection tank, a materialized reaction tank, an inclined plate sedimentation tank, a clean water tank, a dosing device, an air compressor, a pneumatic diaphragm pump and a plate-and-frame filter press; the physicochemical reaction tank is connected with the wastewater collection tank, the inclined plate sedimentation tank is connected with the physicochemical reaction tank, and the clean water tank is connected with the inclined plate sedimentation tank; the dosing device comprises a dosing barrel, a dosing pipe, a metering pump, an aeration pipeline and a tap water inlet pipeline, wherein the aeration pipeline and the metering pump are connected to the dosing barrel, and the dosing pipe and the tap water inlet pipeline are connected to the metering pump. Through the mode, the water inlet quantity and the water consumption quantity can be balanced; the operation is stopped immediately when a fault occurs, and the self-protection function is realized; the service life of the motor is prolonged; the equipment after debugging can achieve the purpose of long-term stable water quality of produced water under the condition of normal operation of daily inspection equipment.

Above-mentioned technique lacks the mechanism that detects the dewatered sludge weight in equipment principal, can't form and utilize dewatered sludge output data, and whether the condition of dosing of sewage quality of water and the device of dosing exists unusually can't obtain effective monitoring, produces the problem that can't form scientific accurate sewage materialization processing operation management and the management of giving up useless admittedly of number intellectuality.

Disclosure of Invention

To solve the above technical problems, the present invention aims to: provides a wastewater physicochemical treatment system capable of measuring and calculating the yield of dewatered sludge and an operation method thereof.

The technical scheme adopted by the invention for solving the problems is as follows: a system for measuring the output of dewatered sludge from a wastewater physicochemical treatment system comprises: a sewage adjusting tank for collecting and storing sewage; the physicochemical sedimentation tank is connected with the sewage regulating tank, receives the sewage in the sewage regulating tank, is used for the physicochemical treatment reaction of the sewage, and forms a mud-water mixture after the physicochemical treatment of the sewage and sinks at the bottom of the physicochemical sedimentation tank for discharging; one end of the sludge tank is connected with the materialized sedimentation tank, and the sludge tank is used for collecting and storing the mud-water mixture generated by the materialized sedimentation tank; the other end of the sludge tank is connected with a dehydration device through a sludge pump, and the sludge pump conveys the sludge-water mixture in the sludge tank to the dehydration device; the dehydration device is connected with the sludge tank, receives the mud-water mixture output by the sludge tank, dehydrates the mud-water mixture to generate dehydrated sludge and filtrate, and discharges the filtrate to the sewage adjusting tank; the drug delivery device is connected with the physicochemical sedimentation tank and is used for preparing and storing a sewage treatment agent with a certain concentration, and the prepared sewage treatment agent is conveyed to the physicochemical sedimentation tank; and the PLC control system is connected with the dehydration device and the dosing device, collects the dehydration times of the dehydration device, calculates the weight of the dehydrated sludge according to the dehydration times, and judges whether the water quality condition of the sewage and the dosing condition of the dosing device are abnormal or not according to the weight of the dehydrated sludge. According to the invention, the PLC control system is connected with the dehydration device and the dosing device, the PLC control system calculates the weight of the dehydrated sludge according to the dehydration times of the dehydration device, and judges whether the water quality condition and the dosing condition of the dosing device are abnormal or not according to the weight of the dehydrated sludge, so that scientific and accurate operation management and solid waste management of sewage physicochemical treatment are formed. When the dosing device has no fault, the output of the dewatered sludge of unit sewage can reflect the fluctuation of the sewage quality from the side surface, so as to give an early warning and indicate that a sewage treatment system needs to be further researched and intervened; when the administration device breaks down, the failure reason can be accurately locked by retrieving the unit wastewater addition amount of different sewage treatment agents.

Furthermore, the dehydrated sludge data can further predict the time of solid waste storage and delivery, the fault alarm of a sludge pool liquid level meter and a sludge discharge pipe electric valve, the statistics or prediction of the disposal cost of the dehydrated sludge, the fault indication of a dehydration device and the redevelopment of other intelligent functions. Wherein, the acquisition of the solid waste storage and delivery time: can be obtained by predicting the comparison of the cumulative output of dewatered sludge (parameter P) with the capacity of the solid waste storage at a future time point. When the liquid level meter of the sludge tank or the electric valve of the sludge discharge pipe has a fault, comparing the single sludge discharge volume (parameter K1) at a certain time with the normal value of the parameter in the past, and accurately locking the fault reason by comparing the difference between the single sludge discharge volume and the normal value of the parameter in the past, thereby realizing the self-diagnosis of the sewage discharge action state; sludge impoundment level gauge and mud pipe electric valve failure alarm: when the liquid level meter of the sludge tank or the electric valve of the sludge discharge pipe has a fault, comparing the single sludge discharge volume (parameter K1) at a certain time with the normal value of the parameter in the past, and accurately locking the fault reason by comparing the difference between the single sludge discharge volume and the normal value of the parameter in the past, thereby realizing the self-diagnosis of the sewage discharge action state; statistics or prediction of cost of disposal of dewatered sludge: can be obtained by the product of 'the output of the dewatered sludge per unit sewage (parameter Q)' and 'the disposal unit price of the dewatered sludge agreed by the qualification unit for solid waste disposal'; fault indication of dewatering device: "the cumulative liquid level decrease amount (parameter L)" of the sludge tank 6 and "the sludge treatment volume (parameter K2)" in the normal operation time of the sludge dewatering system are used as reference values. When the sludge dewatering system fails, the fault reason is accurately locked when the comparison difference between the accumulated liquid level reduction (parameter L) of the sludge pool 6 and the sludge treatment volume (parameter K2) and the reference value is too large or too small.

As a further improvement of the technical scheme, the device further comprises a reaction condition control instrument, wherein a probe of the reaction condition control instrument is installed in the physicochemical sedimentation tank, and a gauge head of the reaction condition control instrument is connected with a PLC control system. The reaction condition control instrument is used for monitoring the reaction conditions in the physicochemical sedimentation tank, the PLC control system is internally preset with the numerical range (such as the pH value and the ORP value range) of the reaction conditions, when the reaction conditions in the wastewater are not in the preset numerical range, the PLC control system can perform intervention action, and the dosing quantity and the dosing concentration of the dosing device are adjusted, so that the reaction conditions of the physicochemical sedimentation tank are controlled, and the high consistency of the sludge production conditions of the physicochemical reaction of the wastewater is realized.

As the further improvement of above-mentioned technical scheme, install equalizing basin level gauge and equalizing basin elevator pump on the sewage equalizing basin, equalizing basin level gauge and equalizing basin elevator pump all are connected with PLC control system, and when the liquid level in the sewage equalizing basin reached a take the altitude, the equalizing basin level gauge was with data transmission to PLC control system, and PLC control system sends the instruction and opens the equalizing basin elevator pump, and the sewage in the sewage equalizing basin is promoted to the materialization sedimentation tank to the equalizing basin elevator pump. The adjusting tank liquid level meter is used for detecting the liquid level of the sewage adjusting tank; the equalizing basin elevator pump is used for taking out the electric water pump to materialization sedimentation tank department with sewage, including being not limited to centrifugal pump, self priming pump. Through installation equalizing basin level gauge and equalizing basin elevator pump in the sewage equalizing basin, equalizing basin level gauge and equalizing basin elevator pump are connected with PLC control system, realize accurate, scientific and unmanned management to the sewage equalizing basin.

As a further improvement of the technical scheme, the regulating reservoir lifting pump is provided with a flowmeter, the flowmeter is connected with the PLC control system, and the flowmeter is used for monitoring the sewage lifting flow of the regulating reservoir lifting pump and transmitting the flow data to the PLC intelligent control system. The flow meter is arranged on the regulating reservoir lifting pump to measure the flow lifted to the physicochemical sedimentation tank by the regulating reservoir lifting pump, the flow meter is arranged on a sewage pipe connected with a water outlet of the regulating reservoir lifting pump and provides a signal (data) of the sewage lifting flow to the PLC control system, the PLC control system calculates the weight of the dewatered sludge according to a preset parameter value and further calculates and utilizes the weight of the dewatered sludge to judge whether the water quality condition and the drug administration condition of the drug administration device are abnormal or not, the prediction of solid waste storage and delivery, the fault alarm of a liquid level meter of the sludge reservoir and a mud discharge pipe electric valve, the statistics or prediction of the disposal cost of the dewatered sludge and the redevelopment of other mathematical functions are carried out.

As a further improvement of the technical scheme, the physical and chemical precipitation tank comprises a physical and chemical reaction zone and a precipitation zone; the physical and chemical reaction zone is connected with a sewage regulating tank, the physical and chemical reaction zone is communicated with a settling zone, and the settling zone is connected with a dewatering device; the physicochemical reaction zone is provided with a plurality of reaction tanks, the drug delivery device can be used for preparing a plurality of sewage treatment agents, and the drug delivery device can be used for delivering different sewage treatment agents to different reaction tanks; and sewage sequentially passes through the reaction tank and reacts with the medicament in the reaction tank, and finally flows to a precipitation zone for precipitation. Through setting up a plurality of reaction tanks, every reaction tank has different sewage treatment medicament, and every kind of treatment medicament can react and produce the flocculent sediment with the composition of difference in the sewage to the realization is purified the progressive formula of sewage.

As a further improvement of the technical scheme, the device also comprises a sludge tank, wherein one end of the sludge tank is connected with the sedimentation zone, and the sludge tank is used for collecting and storing a sludge-water mixture generated by the materialized sedimentation tank; the other end of the sludge tank is connected with a dewatering device through a sludge pump, and the sludge pump conveys the mud-water mixture in the sludge tank to the dewatering device. Sludge (sludge-water mixture) discharged from the materialized sedimentation tank is stored by arranging a sludge tank.

As a further improvement of the technical scheme, an electric valve of a sludge discharge pipe is arranged between the settling zone and the sludge tank, and the electric valve of the sludge discharge pipe is connected with a PLC control system. At present, the mud of sedimentation zone generally adopts artifical row mud in sewage materialization sedimentation tank, and this kind of mode has following problem: firstly, personnel needs to be allocated, the labor cost is high, the high cost is caused, and the fluctuation of the sewage treatment effect caused by improper operation in any form (such as laziness and insufficient technical level control) also exists; secondly, manual sludge discharge, the initial time of sludge discharge and the opening size of an electric valve of a sludge discharge pipe can cause the inconsistency of sludge discharge amount, the proportion of sludge and water is different, the sludge discharge working condition is unstable, and the next process link of sewage treatment and the final sewage treatment effect are influenced. In a word, the manual sludge discharge is not beneficial to the specialized and precise management of the operation of the sedimentation tank; thirdly, excellent operators of the sewage treatment system need scientific training and long-term operation management experience, and also depend on the natural endowments, working attitude and working state, so that the large-scale and industrialized development for realizing third-party treatment is limited. The invention realizes the actions of sludge discharge and non-sludge discharge of the materialized sedimentation tank by arranging the sludge tank, arranging the electrically operated valve of the sludge discharge pipe between the sedimentation zone and the sludge tank, controlling the switch of the electrically operated valve of the sludge discharge pipe in an electric control mode and opening and closing the electrically operated valve of the sludge discharge pipe. When the accumulated amount of the sewage treatment reaches a certain numerical value, the PLC control system sends an instruction to open the electric valve of the sludge discharge pipe according to a set opening degree (the angle between the valve and the valve body), sludge is discharged from the settling zone to the sludge tank under the action of weight, and when the time for opening the electric valve of the sludge discharge pipe is accumulated to a preset value of the electric valve closing triggering time, the PLC control system sends an instruction to close the electric valve of the sludge discharge pipe, so that the consistence, the intelligence counting and the accurate management of the sludge discharge action of the physicochemical reaction settling tank are realized through the arrangement.

As the further improvement of the technical scheme, install sludge impoundment level gauge and sludge pump on the sludge impoundment, sludge impoundment level gauge and sludge pump all are connected with PLC control system, and when the mud-water mixture in the sludge impoundment reached certain height, the sludge impoundment level gauge was with data transmission to PLC control system, and PLC control system opened the sludge pump, and the mud-water mixture pump in the sludge impoundment is to dewatering device to the sludge pump.

As a further improvement of the technical scheme, the drug delivery device comprises a plurality of drug dispensing grooves, different sewage treatment agents are dispensed in each drug dispensing groove, and a stirrer is mounted in each drug dispensing groove. In the sewage treatment process, a plurality of sewage treatment agents are used, one sewage treatment agent is independently prepared into 1 set of preparation tanks, each sewage treatment agent is prepared according to a preparation method with uniform concentration, and the specific concentration of the sewage treatment agent is realized by adding a specific amount of solute (sewage treatment agent) and a specific volume of solvent (tap water). The sewage treatment agents prepared in the dispensing tanks have uneven concentration and inconsistent concentration due to factors such as sedimentation on the premise of no stirring, and the stirrer is used for stirring the sewage treatment agents in the dispensing tanks, so that the agents in the dispensing tanks are in a dissolved state and in a uniform concentration state, and the concentration of the sewage treatment agent solution supplied to the physicochemical reaction tank is uniform and consistent.

A method for operating a wastewater physicochemical treatment system capable of measuring the yield of dewatered sludge by using the wastewater treatment system comprises the following steps:

s1, setting an empirical value of sludge yield of single sludge dewatering operation: before operation, the weight of the dewatered sludge obtained after the dewatering device is operated for more than 2 times of cycles is taken, an average value is taken and recorded as a parameter N, and the empirical value parameter N is set in the PLC control system.

S2, calculating the cumulative yield of the dewatered sludge: and the PLC control system takes the number of the periodic work completed by the dewatering device in a certain period of time and records the number as a parameter M, the product of the parameter N and the parameter M obtains the cumulative yield of the dewatered sludge, and the cumulative yield of the dewatered sludge is recorded as a parameter P.

S3, calculating the yield of the dewatered sludge of unit sewage: and taking the accumulated flow of the flowmeter in the time period and recording as a parameter F, dividing the parameter P by the parameter F to obtain the dewatered sludge yield of the unit sewage, and recording the dewatered sludge yield of the unit sewage as a parameter Q.

S4, monitoring of the sewage quality and the dosing device: and the PLC control system judges whether the sewage quality and the dosing condition of the dosing device are abnormal or not according to the size of the parameter Q and gives an alarm.

The above applications to the dehydration data include, but are not limited to, the malfunction warning of sewage quality and drug administration devices, the prediction of optimal time for solid waste storage and discharge, the malfunction warning of electric valves of sludge tanks and sludge discharge pipes, the statistics or prediction of the disposal cost of dehydrated sludge, and the re-development of other mathematical functions.

The beneficial effects of the invention are: according to the invention, the PLC control system is connected with the dehydration device and the dosing device, the PLC control system calculates the weight of the dehydrated sludge according to the dehydration times of the dehydration device, and judges whether the water quality condition and the dosing condition of the dosing device are abnormal or not according to the weight of the dehydrated sludge, so that scientific and accurate operation management of sewage physicochemical treatment and solid waste management are formed.

Drawings

The invention is further explained below with reference to the drawing description and the detailed description.

FIG. 1 is a schematic structural view of a preferred embodiment of the present invention;

in the figure: 1-sewage adjusting tank, 11-adjusting tank liquid level meter, 12-adjusting tank lift pump, 121-flowmeter, 2-physicochemical sedimentation tank, 21-physicochemical reaction zone, 22-sedimentation zone, 23-guide plate, 3-dewatering device, 41-dispensing tank, 42-stirrer, 43-medicament delivery pump, 5-PLC control system, 6-sludge tank, 61-sludge pump, 62-sludge tank liquid level meter, 7-sludge discharge pipe electric valve and 8-reaction condition control instrument.

Detailed Description

Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.

In the description of the present invention, unless otherwise specifically limited, terms such as set, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention by combining the specific contents of the technical solutions.

Referring to fig. 1, a wastewater physicochemical treatment system capable of measuring the yield of dehydrated sludge comprises a sewage adjusting tank 1, a physicochemical sedimentation tank 2, a sludge tank 6, a dehydration device 3, a drug delivery device and a PLC control system 5.

The sewage adjusting tank 1 is provided with an adjusting tank liquid level meter 11 and an adjusting tank lifting pump 12; a flow meter 121 is arranged on a sewage pipe between the adjusting tank lifting pump 12 and the materialization sedimentation tank 2. One end of the adjusting tank lifting pump 12 is connected with the sewage adjusting tank 1 through a sewage pipe, and the other end of the adjusting tank lifting pump is connected with the physicochemical sedimentation tank 2 through a sewage pipe; and the regulating reservoir liquid level meter 11, the regulating reservoir lifting pump 12 and the flow meter 121 are connected with the PLC control system 5.

A materialization reaction zone 21 and a precipitation zone 22 are arranged in the materialization precipitation tank 2; the adjusting tank lifting pump 12 is connected with the physicochemical reaction zone 21 and conveys sewage from the upper part of the physicochemical reaction zone 21; six reaction tanks are arranged in the physicochemical reaction zone 21, a first reaction tank, a second reaction tank, a third reaction tank, a fourth reaction tank, a fifth reaction tank and a sixth reaction tank are sequentially arranged along the sewage flow direction, lower water inlet is arranged between the first reaction tank and the second reaction tank, upper water inlet is arranged between the second reaction tank and the third reaction tank, lower water inlet is arranged between the third reaction tank and the fourth reaction tank, upper water inlet is arranged between the fourth reaction tank and the fifth reaction tank, lower water inlet is arranged between the fifth reaction tank and the sixth reaction tank, upper water inlet is arranged between the sixth reaction tank and the settling zone 22, the mixing degree between sewage and the reagents is increased by alternately arranging an upper water inlet mode and a lower water inlet mode, the contact time and the reaction time between the sewage and the reagents are prolonged, and the sewage treatment efficiency is improved; the reaction condition control instrument 8 is also arranged in the physicochemical reaction zone 21 and is used for monitoring and controlling the reaction conditions, such as temperature, pH value, ORP value and the like, in the physicochemical reaction zone 21. Wherein, part of the medicaments are fed by the medicament delivery pump 43 controlled by the reaction condition control instrument 8 according to the set numerical range, and the other part of the medicaments are fed according to the fixed proportion of the flow of the medicament delivery pump to the flow of the regulating reservoir lifting pump. The settling zone 22 is provided with a guide plate 23 at a certain distance from the physicochemical reaction zone 21, and a guide groove is formed. The guide plate is not sealed with the bottom of the settling zone 22, so that the water distribution of the sewage mixture at the bottom of the settling zone 22 is realized. And a mud bucket is arranged at the bottom of the settling zone 22 and used for guiding out sludge. The bottom of the mud bucket is connected with a sludge tank 6 through a first sludge pipe, and a mud pipe electric valve 7 is arranged on the sludge pipe; the reaction condition control instrument 8 and the mud pipe electric valve 7 are both connected with the PLC control system 5.

A sludge tank liquid level meter 62 is arranged on the sludge tank 6, the sludge tank 6 is connected with the dehydration device 3 through a second sludge pipe, and a sludge pump 61 is arranged on the second sludge pipe; the sludge tank liquid level meter 62 and the sludge pump 61 are both connected with the PLC control system 5.

The dehydration device 3 adopts a plate-and-frame filter press, and can also be replaced by mechanical sludge dehydration equipment in other forms; the dehydration device 3 is connected with a PLC control system 5.

The administration device comprises a plurality of dispensing tanks 41 and an agitator 42 mounted on the dispensing tanks 41. The drug delivery device is connected with the physicochemical sedimentation tank 2 through a drug feeding pipe, and a drug delivery pump 43 is arranged on the drug feeding pipe; the delivery pump and the stirrer 42 are both connected with the PLC control system 5.

The PLC control system 5 consists of an electrical control system of a sewage physicochemical treatment system and a server, and the server is used for storing, recording and calculating data; the PLC control system 5 is electrically connected with the regulating reservoir liquid level meter 11, the regulating reservoir lifting pump 12, the flow meter 121, the reaction condition control instrument 8, the mud discharge pipe electric valve 7, the sludge reservoir liquid level meter 62, the sludge pump 61, the dewatering device 3, the medicament delivery pump 43 and the stirrer 42 through electric cable electric signal lines.

The wastewater treatment system works in the following way: in the wastewater production process of a sewage disposal unit, wastewater is discharged into a wastewater adjusting tank 1 through a pipeline (pipe network) to adjust the quality and quantity of the water. The sewage is lifted from the sewage adjusting tank 1 to the physicochemical reaction zone 21 of the physicochemical sedimentation tank 2 according to the set treatment flow through the adjusting tank lifting pump 12. Meanwhile, the reaction condition control instrument 8 monitors the reaction conditions in real time, automatically provides signals according to the range of the conditions arranged in the reaction conditions and carries out linkage dosing with the medicament delivery pump 43, the dosing device 4 adds required sewage treatment medicaments of different types into the physicochemical reaction region 21, pollutants of the sewage and the sewage treatment medicaments carry out physical and chemical reactions in the physicochemical reaction region 21 and form flocculent sludge, sludge-water separation is realized in the sedimentation region 22, clean water is discharged into the next sewage treatment process link, and the sludge is sedimentated to a mud bucket to be discharged. When a certain amount of sludge is accumulated in the mud bucket of the settling zone 22, the sludge needs to be discharged into the sludge tank 6 so as to ensure that the settling function of the physicochemical reaction tank can be normally exerted, prevent the sludge from floating and prevent the influence on the next sewage treatment process link. The hopper in the settling area 22 accumulates a certain amount of sludge, and can be confirmed by adopting a specific accumulative treatment flow rate or a specific accumulative sewage treatment time. The sludge pump 61 pumps the sludge in the sludge pool 6 to the dehydration device 3 (plate and frame filter press) for sludge dehydration operation, filtrate is discharged back to the sewage adjusting pool 1, and the dehydrated sludge is transported to a qualification unit for treatment.

The invention connects a sewage adjusting tank with an adjusting tank lifting pump, an adjusting tank lifting pump flowmeter, a sewage pipe with a materialization sedimentation tank, the materialization sedimentation tank is connected with a sludge tank through a sludge pipe and a sludge pipe electric valve, a drug administration device 4 is connected with the materialization sedimentation tank, a PLC control system is connected with each electric device (the adjusting tank lifting pump, the adjusting tank lifting pump flowmeter, an adjusting tank liquid level meter, a reaction condition control instrument 8, a sludge pipe electric valve, a sludge tank liquid level meter, a sludge pump and a dehydration device), the adjusting tank liquid level, the adjusting tank lifting pump flow and the sludge tank liquid level data are obtained through direct detection, and then the PLC control system calculates for multiple times, and calculates the weight of dehydrated sludge in a certain period according to the dehydration times of the dehydration device in the period. The following mathematical applications can be carried out according to the weight of the dewatered sludge: judging whether the water quality condition and the drug administration condition of a drug administration device are abnormal or not, predicting the optimal time of solid waste discharge (dehydrated sludge discharge), alarming faults of a liquid level meter of a sludge pool and a mud pipe electric valve, counting or predicting the disposal cost of the dehydrated sludge, and developing other intelligent functions again. Thus, scientific and accurate intelligent sewage materialization treatment operation management and solid waste management are formed.

A method for operating a wastewater physicochemical treatment system capable of measuring the yield of dewatered sludge by using the wastewater treatment system comprises the following steps:

step one, acquiring the actual liquid level of a sewage adjusting tank 1: the actual liquid level of the sewage adjusting tank 1 is recorded as a parameter A. The parameter A is the actual liquid level in the sewage regulating reservoir 1 detected by the regulating reservoir liquid level meter 11, and can adopt 'meter', 'decimeter' and 'centimeter' as units.

Step two, setting the working trigger liquid level range of the regulating reservoir lift pump 12: the preset parameter B is the upper limit liquid level of the sewage regulating tank 1, and the parameter C is the lower limit liquid level of the sewage regulating tank 1; the parameter B is greater than the parameter C; the parameters B and C can be modified or adjusted through man-machine conversation according to the requirements of sewage treatment operation.

Step three, setting the on and off time conditions of the regulating reservoir lifting pump 12 and the medicament delivery pump 43: the preset duration length is a parameter D1 (such as 5 minutes); when the parameter A is greater than the parameter B and the duration time reaches the parameter D1, the regulating reservoir lift pump 12 and the medicament delivery pump 43 are started; when parameter a is less than parameter C and the duration reaches parameter D1, the conditioning reservoir lift pump 12 and the medication delivery pump 43 are turned off. The parameter D1 may be in units of "second", "minute", "hour". Through the arrangement, the intelligent control of the regulating reservoir lifting pump 12 and the sewage treatment agent delivery pump 43 is completed, and the intelligent control of the starting and the ending of the sewage physical and chemical treatment is finally realized.

Step four, setting of the on and off time conditions of the agitator 42: presetting the duration length as a parameter D2 (such as 1 minute), wherein the parameter D2 is smaller than the parameter D1; when the parameter a is greater than the parameter B and the duration reaches the parameter D2, the stirrer 42 is turned on; the purpose of the parameter D2 being less than the parameter D1 is to ensure that the agitator 42 is started earlier than the surge tank lift pump 12, thereby ensuring that the concentration of the sewage treatment agent added to the physicochemical reaction tank is uniform; the preset duration is parameter D3 (e.g. 6 minutes), parameter D3 being greater than D1; when parameter a is less than parameter C and the duration reaches D3, the agitator 42 is turned off; the purpose of having parameter D3 greater than D1 is to ensure that the agitator 42 is turned off later than the surge tank lift pump 12, thereby ensuring that the concentration of the wastewater treatment chemical added to the physicochemical reaction tank is uniform. The parameters D2 and D3 may be in units of "seconds", "minutes", "hours". The setting of the parameter D2 and the parameter D3 covers 2 time intervals of the conditioning tank lifting pump 12 in a period of time before starting and in a period of time after closing, and the time intervals cover all time intervals of sewage physicochemical treatment. In other words, the stirrer 42 stirs the sewage treatment agent in the dosing tank in all time periods of the sewage physicochemical treatment process, thereby avoiding the precipitation and sedimentation of solute, ensuring that the concentrations of various sewage treatment agents are 100% consistent in any time period, and realizing that the concentrations of the sewage treatment agents added in the sewage physicochemical treatment process are 100% consistent and uniform. The agitator 42 is stopped at times other than all of the above-described periods of sewage physicochemical treatment, thereby also avoiding waste of electricity.

Step five, acquiring the instantaneous flow of sewage treatment: and recording the instantaneous sewage treatment flow as a parameter E. The parameter E is a flow meter 121 for measuring the instantaneous flow rate of the conditioning tank lift pump 12 to the physical and chemical precipitation tank 2, and may be in units of "ton/hour".

Step six, acquiring the accumulated flow of the sewage treatment: the cumulative flow of the sewage treatment is recorded as a parameter F. The parameter F is a flow meter 121 for measuring the accumulated flow rate of the conditioning tank lift pump 12 in a period of time from being lifted to the physical and chemical precipitation tank 2, and may be an hour accumulation, a day accumulation, a month accumulation, a year accumulation, or a total accumulation, and may be in a unit of "ton".

Step seven, acquiring the added value of the accumulated flow of the sewage treatment: and recording the accumulated flow increase value of the sewage treatment as a parameter G. The parameter G is the increase value of the accumulated flow of the sewage treatment, which is the increase value of the accumulated flow of the sewage treatment at the later time compared with the former time, and the unit of ton can be adopted; the parameter G is a parameter for controlling the opening of the electric valve 7 of the sludge discharge pipe, and when the parameter G reaches a certain numerical value, the electric valve 7 of the sludge discharge pipe is opened.

Step eight, setting a parameter H: the parameter H refers to the maximum designed treatment capacity of the physicochemical sedimentation tank 2 per hour, the unit of ton/hour is adopted, and the parameter H is larger than or equal to the parameter E, so that the aim of ensuring that the instantaneous flow rate of sewage treatment does not exceed the maximum designed treatment capacity of sewage is achieved.

Step nine, setting closing triggering time of the electric valve 7 of the sludge discharge pipe: the preset duration length is a parameter D4, and when the accumulated time of opening the electric valve 7 of the sludge discharge pipe reaches D4, the electric valve 7 of the sludge discharge pipe is closed. The parameter D4 may be in units of seconds, minutes, hours.

Step ten, obtaining the actual liquid level in the sludge pool 6: the actual liquid level in the sludge basin 6 is recorded as parameter J. The parameter J is measured by a sludge pool level meter 62. The parameter J can be in units of "meters", "decimeters" and "centimeters".

Step eleven, calculating the single sludge discharge volume: the single sludge discharge volume is recorded as parameter K1. The electric valve 7 of the sludge discharge pipe is opened and closed once, the product of the difference of the formed parameters J and the area (fixed value and field measurement) of the sludge tank 6 obtains a parameter K1, and the calculated parameter K1 can adopt 'cubic meter', 'cubic decimeter' and 'cubic centimeter' as units. During the period that mud pipe motorised valve 7 was opened each time, PLC control system 5 control sludge pump 61 stop work, and the purpose is to guarantee that the difference of above-mentioned parameter J leads to for the blowdown completely, has rejected the influence that the sludge dewatering leads to.

Step twelve, acquiring the accumulated liquid level reduction of the sludge pool 6: the cumulative liquid level reduction of the sludge tank 6 is recorded as parameter L. The parameter L is the cumulative total amount of liquid level reduction of the sludge tank 6 in the process of conveying the sludge in the sludge tank 6 to the dehydration device 3 through the sludge pipe by the sludge pump 61 for sludge dehydration operation, and can be in the unit of meter, decimeter and centimeter.

Thirteen, calculating the sludge treatment volume: the sludge treatment volume is recorded as parameter K2. The parameter K2 is equal to the volume obtained by multiplying the parameter L by the area of the sludge tank 6, and can adopt cubic meters, cubic decimeters and cubic centimeters as units. The walls of the sludge basin 6 should be cleaned periodically (e.g. 1/month). The purpose is to ensure that the wall of the tank is not adhered with sludge. Affecting the actual tank volume of the sludge tank 6.

Step fourteen, calculating the accumulated sludge discharge volume: the cumulative sludge discharge volume was recorded as K3. K3 is the sum of all parameters K1 over a certain time period. The unit of "cubic meter", "cubic decimeter" or "cubic centimeter" can be adopted.

Fifteen, calculating the accumulated sludge treatment volume: the cumulative sludge treatment volume was recorded as K4. K4 refers to the sum of all K2 over a certain time period. The unit of "cubic meter", "cubic decimeter" or "cubic centimeter" can be adopted.

Sixthly, acquiring the times of sludge dewatering operation: the number of sludge dewatering operations was recorded as parameter M. The parameter M refers to normal work of the dehydration device, and 1 time of pressure filtration dehydration, pressure maintaining (the pressure all reaches 1 fixed pressure value) and sludge unloading are completed every time, and the operation is recorded as 1 time of sludge dehydration. As the '1-time sludge dewatering full-period operation' is necessarily started by the opening action and ended by the closing action of the dewatering equipment, the PLC intelligent control system is internally programmed with '1-time sludge dewatering full-period operation' every time the dewatering equipment completes the opening and closing action of 1 time. The parameter M is in units of "times". Through man-machine conversation, the PLC digital intelligent control system can be internally provided with programs for inputting abnormal dehydration equipment to complete the opening and closing actions every 1 time, namely the abnormal 'sludge dehydration operation times'. Including but not limited to the number of opening and closing actions of the dewatering equipment caused by power failure, trouble maintenance of the dewatering equipment, trouble maintenance of a sludge pump or a sludge pipe, and the like.

Seventhly, setting an empirical value of the sludge yield of single sludge dewatering operation: the empirical value of the sludge yield of a single sludge dewatering operation is recorded as a parameter N. The parameter N refers to the weight of the dewatered sludge obtained by dewatering the sludge every time 1-time press filtration dewatering, pressure maintaining (the pressure reaches 1 fixed pressure value) and sludge discharging are completed after the dewatering equipment normally works. The sludge weight can be weighed by carrying out weighing or by self, but the weighing equipment is qualified by metering verification. The weight of the sludge after 5 times of dehydration is repeatedly weighed, and the average value of the weight of 5 times is taken as the parameter. The unit of "kilogram" and "ton" can be used.

Eighteen, calculating the cumulative yield of the dewatered sludge: the cumulative yield of dewatered sludge was recorded as parameter P. The parameter P refers to the total weight of the dewatered sludge obtained by calculating the product of the parameter M and the parameter N after a plurality of sludge dewatering operations of dewatering equipment in a certain time period, namely the parameter P, and the unit can be kilogram or ton.

Nineteen steps, calculation of the output of the dewatered sludge of unit sewage: the yield of dewatered sludge per unit of sewage was recorded as parameter Q. The parameter Q is a time period, and is obtained by dividing the parameter P by the parameter F, and the units of "kg/ton" and "ton/ton" can be adopted.

All data generated by the operation method can provide basis for analysis of sewage physicochemical treatment operation management in the future, and is a basis for providing intelligent function re-development.

The data generated by the operation can be used for carrying out the following alarms (prompts) and developing new intellectualized functions according to the alarms, such as:

1. the change of the 'dehydrated sludge yield per unit sewage (parameter Q)' in a certain period of time can give an alarm (prompt) in two aspects of 'the change of the content of raw sewage pollutants' or 'the failure of a dosing system consisting of the dosing device 4 and the reaction condition control instrument 8'. The former is again embodied in the following two cases: when the parameters are reduced, the content of pollutants in raw sewage is low, and the dosage of a sewage treatment agent required to be added is small, so that the sludge production is small; when the parameter becomes larger, the content of pollutants in raw sewage is higher, and the dosage of the required sewage treatment agent is larger, so that more sludge is produced. The latter is again reflected in the following two cases: when the parameter becomes smaller, the dosage of the sewage treatment agent required to be input is smaller possibly because a dosing system composed of the dosing device 4 and the reaction condition control instrument 8 is in failure, so that the sludge production is smaller; when the parameter becomes larger, the dosage of the sewage treatment agent required to be input is larger and more sludge is produced probably because a dosing system composed of the dosing device 4 and the reaction condition control instrument 8 is in failure; the alarm is significant in arousing the attention of operating technicians of the sewage treatment system, tracing whether the early-warning condition exists or not, timely disposing, reminding the early-warning condition of observing the sewage physicochemical treatment effect and preventing sudden environmental pollution accidents.

2. The method can predict the accumulated yield of the dewatered sludge (parameter P) at a certain time point in the future by combining the yield of the dewatered sludge (parameter Q) of unit sewage, the maximum designed treatment capacity of the materialized sedimentation tank 2 per hour (parameter H) and the production planning time of a sewage discharge unit, further deduces the prompt of the optimal time for discharging the solid waste from a warehouse according to the capacity of the solid waste warehouse, is convenient for the relevant communication with the qualified solid waste disposal unit to carry out outward disposal, avoids the law of violation of solid waste control aspect caused by the condition that the storage capacity of the solid waste warehouse is exceeded in the future, and realizes the accurate disposal of the solid waste according to the plan in time, which is one of the scientific embodiment of sludge management.

3. By comparing the 'single sludge discharge volume (parameter N)' with the normal value of the former parameter at a certain time, when the former is very different from the latter, two possibilities can be judged: one may be a malfunction of the liquid level meter of the sludge tank 6, and the other may be a malfunction related to an abnormal opening degree of the electrically operated valve 7 of the sludge discharge pipe. Thus, the self-diagnosis of the mud discharging action state is realized.

4. "the cumulative liquid level decrease amount (parameter L)" of the sludge tank 6 and "the sludge treatment volume (parameter K2)" during the normal operation time of the sludge dewatering system are set as reference values. The fault early warning of the sludge dewatering system can be given by comparing the accumulated liquid level reduction (parameter L) of the sludge tank 6 and the sludge treatment volume (parameter K2) with reference values in a certain period of time. When the ratio is too large than the reference value, the condition of sludge leakage of a sludge pipe, a sludge pump and dehydration equipment can exist, and the sludge treatment volume (parameter K2) is larger; if the ratio is too small, the volume of sludge treatment (parameter K2) may be too small due to clogging of a sludge pipe, a sludge pump, and a dewatering device and deterioration of dewatering efficiency.

5. By multiplying the "yield of dewatered sludge per unit of sewage (parameter Q)" and the "unit price of treatment of dewatered sludge agreed with the qualification unit for solid waste treatment", statistical data or predictive data of the treatment cost of dewatered sludge generated or to be generated in the future can be calculated, and a prompt for the cost can be made to the relevant person.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all equivalent structural changes, which can be directly or indirectly applied to other related technical fields under the inventive concept of the present invention, are included in the present invention.

Claims (9)

1. A measurable and calculable waste water materialization processing system of dehydration mud output which characterized in that includes:

a sewage conditioning tank (1) for collecting and storing sewage;

the physical and chemical sedimentation tank (2) is connected with the sewage regulating tank (1), receives the sewage in the sewage regulating tank (1), is used for the physical and chemical treatment reaction of the sewage, and forms a mud-water mixture after the physical and chemical treatment of the sewage and sinks at the bottom of the physical and chemical sedimentation tank (2) for discharge;

one end of the sludge tank (6) is connected with the materialized sedimentation tank (2), and the sludge tank (6) is used for collecting and storing a sludge-water mixture generated by the materialized sedimentation tank (2); the other end of the sludge tank (6) is connected with a dehydration device (3) through a sludge pump (61), and the sludge pump (61) conveys the sludge-water mixture in the sludge tank (6) to the dehydration device (3);

the dehydration device (3) is connected with the sludge tank (6), receives the mud-water mixture output by the sludge tank (6), dehydrates the mud-water mixture to generate dehydrated sludge and filtrate, and discharges the filtrate to the sewage adjusting tank (1);

the dosing device is connected with the physical and chemical sedimentation tank (2) and is used for preparing and storing a sewage treatment agent with a certain concentration, and the prepared sewage treatment agent is conveyed to the physical and chemical sedimentation tank (2);

and the PLC control system (5) is connected with the dewatering device (3) and the dosing device (4), collects the dewatering times of the dewatering device (3), calculates the weight of the dewatered sludge according to the dewatering times, and judges whether the water quality condition of the sewage and the dosing condition of the dosing device are abnormal or not according to the weight of the dewatered sludge.

2. The system for physicochemical treatment of wastewater with measurable yield of dewatered sludge as claimed in claim 1, wherein:

the device is characterized by further comprising a reaction condition control instrument (8), wherein a probe of the reaction condition control instrument (8) is installed in the materialization sedimentation tank (2), and a gauge head of the reaction condition control instrument (8) is connected with the PLC control system (5).

3. The system for physicochemical treatment of wastewater, according to claim 1, wherein the system for measuring the yield of dewatered sludge comprises:

install equalizing basin level gauge (11) and equalizing basin elevator pump (12) on sewage equalizing basin (1), equalizing basin level gauge (11) and equalizing basin elevator pump (12) all are connected with PLC control system (5), and when the liquid level in sewage equalizing basin (1) reached a take the altitude, equalizing basin level gauge (11) with data transmission to PLC control system (5), and PLC control system (5) send the instruction and open equalizing basin elevator pump (12), and equalizing basin elevator pump (12) promote the sewage in sewage equalizing basin (1) to materialization sedimentation tank (2).

4. The system for physicochemical treatment of wastewater, according to claim 3, wherein the system for measuring the yield of dewatered sludge comprises:

install flowmeter (121) on equalizing basin elevator pump (12), flowmeter (121) are connected with PLC control system (5), and flowmeter (121) are used for monitoring the sewage lifting flow of equalizing basin elevator pump (12) and with the data transmission to PLC control system (5) of flow.

5. The system for physicochemical treatment of wastewater with measurable yield of dewatered sludge as claimed in claim 1, wherein:

the materialization sedimentation tank (2) comprises a materialization reaction zone (21) and a sedimentation zone (22);

the physicochemical reaction zone (21) is connected with the sewage regulating tank (1), the physicochemical reaction zone (21) is communicated with the sedimentation zone (22), and the sedimentation zone (22) is connected with the sludge tank (6);

the physicochemical reaction zone (21) is provided with a plurality of reaction tanks, the drug delivery device (4) can be used for preparing a plurality of sewage treatment agents, and the drug delivery device (4) can be used for delivering different sewage treatment agents to different reaction tanks;

the sewage passes through the reaction tank in turn and reacts with the medicament in the reaction tank, and finally flows to a precipitation zone (22) for precipitation.

6. The system for physicochemical treatment of wastewater, according to which the yield of dewatered sludge can be measured, according to claim 5, wherein:

and a mud pipe electric valve (7) is arranged between the settling zone (22) and the sludge tank (6), and the mud pipe electric valve (7) is connected with the PLC control system (5).

7. The system for physicochemical treatment of wastewater with measurable yield of dewatered sludge as claimed in claim 1, wherein:

install sludge impoundment level gauge (62) on sludge impoundment (6), sludge impoundment level gauge (62) and sludge pump (61) all are connected with PLC control system (5), and when the muddy water mixture in sludge impoundment (6) reached a take the altitude, sludge impoundment level gauge (62) were with data transmission to PLC control system (5), and sludge pump (61) were opened in PLC control system (5), and sludge pump (61) were with muddy water mixture pump to dewatering device (3) in sludge impoundment (6).

8. The system for physicochemical treatment of wastewater with measurable yield of dewatered sludge as claimed in claim 1, wherein:

the administration device comprises a plurality of dispensing grooves (41), different sewage treatment agents are dispensed in each dispensing groove (41), and a stirrer (42) is installed in each dispensing groove (41).

9. A method of operating a wastewater physicochemical treatment system capable of measuring a yield of dewatered sludge, wherein the wastewater treatment system according to claim 4 is used, comprising the steps of:

s1, setting an empirical value of sludge yield of single sludge dewatering operation: before operation, the weight of the dewatered sludge obtained after the dewatering device (3) is operated for more than two times of cycles is taken, an average value is taken and recorded as a parameter N, and the empirical value parameter N is set in the PLC control system (5);

s2, calculating the cumulative yield of the dewatered sludge: the PLC control system (5) takes the number of times of the periodic operation completed by the dehydration device (3) in a certain period of time and records the number as a parameter M, the product of the parameter N and the parameter M obtains the cumulative output of the dehydrated sludge, and the cumulative output of the dehydrated sludge is recorded as a parameter P;

s3, calculating the yield of the dewatered sludge of unit sewage: taking the accumulated flow of the flowmeter (121) in the time period and recording as a parameter F, dividing the parameter P by the parameter F to obtain the dewatered sludge yield of the unit sewage, and recording the dewatered sludge yield of the unit sewage as a parameter Q;

s4, monitoring of the sewage quality and the dosing device: and the PLC control system (5) judges whether the sewage quality and the dosing condition of the dosing device are abnormal or not according to the size of the parameter Q and gives an alarm.

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