CN110436701A - Sewage water treatment method and device - Google Patents
Sewage water treatment method and device Download PDFInfo
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- CN110436701A CN110436701A CN201910616869.1A CN201910616869A CN110436701A CN 110436701 A CN110436701 A CN 110436701A CN 201910616869 A CN201910616869 A CN 201910616869A CN 110436701 A CN110436701 A CN 110436701A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
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- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The present invention provides a kind of sewage water treatment method and device, sewage water treatment method includes: to carry out pH value adjusting to treatment sewage；Precipitation process is carried out to the treatment sewage after progress pH value adjusting；Anaerobic oxidation is carried out to the treatment sewage after progress precipitation process；Aerobic oxidation is carried out to the treatment sewage after progress anaerobic oxidation；Detection carries out the nitrogen content of the treatment sewage after aerobic oxidation, if the nitrogen content of the treatment sewage after aerobic oxidation is not more than default nitrogen content, it is determined that sewage treatment is completed；If the nitrogen content of the treatment sewage after aerobic oxidation is greater than default nitrogen content, secondary anaerobic oxidation and aerobic oxidation are carried out to the treatment sewage after aerobic oxidation.Sewage water treatment method and device provided by the invention can be effectively reduced the total nitrogen content in sewage.
Description
Technical field
The invention belongs to technical field of sewage, are to be related to a kind of sewage water treatment method and device more specifically.
Background technique
During city industrialization, there are Some Enterprises to discharge to river waste discharge, especially part industrial and mining enterprises
Sewage in there are various heavies such as copper, zinc, nickel, lead to heavy metals exceeding standard in river bottom mud.On the other hand, urban life is dirty
The row of stealing of water, leads in bed mud that there are a large amount of organic matter, ammonia-nitrogen contents with higher.To lake dredging bottom-mud treatment process
In, it can be generated with sewage, there are a large amount of heavy metal ion, suspended matter, ammonia nitrogen in sewage, and sewage pH value (PH,
Pondus Hydrogeni) it fluctuates greatly, direct emission brings pollution to environment.Existing sewage water treatment method is using bioanalysis
It is handled, and the fluctuation of the sewage pH value of lake dredging bottom-mud is big, heavy metal ion therein, suspended matter, ammonia nitrogen phase interaction
With the processing of interference microorganism, total nitrogen content in Dredged bed mud sewage is caused to be difficult to decrease.
Summary of the invention
The purpose of the present invention is to provide a kind of sewage water treatment method and device, with solve it is existing in the prior art how
The technical issues of reducing total nitrogen content in sewage.
To achieve the above object, the embodiment of the present invention in a first aspect, providing a kind of sewage water treatment method, comprising:
PH value adjusting is carried out to treatment sewage；
Precipitation process is carried out to the treatment sewage after progress pH value adjusting；
Anaerobic oxidation is carried out to the treatment sewage after progress precipitation process；
Aerobic oxidation is carried out to the treatment sewage after progress anaerobic oxidation；
Detection carries out the nitrogen content of the treatment sewage after aerobic oxidation, if the nitrogen of the treatment sewage after aerobic oxidation contains
Amount is no more than default nitrogen content, it is determined that sewage treatment is completed；
If the nitrogen content of the treatment sewage after aerobic oxidation is greater than default nitrogen content, to be processed after aerobic oxidation
Sewage carries out secondary anaerobic oxidation and aerobic oxidation.
It is optionally, described that pH value adjusting is carried out to treatment sewage, comprising:
Detect the current pH value for the treatment of sewage；
If the current pH value for the treatment of sewage is not within the scope of default pH value, by acid-base solution to dirt to be processed
The pH value of water is adjusted.
It is optionally, described to be adjusted by pH value of the acid-base solution to treatment sewage, comprising:
The default spray concentration and fountain height of acid-base solution are determined according to the current pH value for the treatment of sewage；
The pH value for the treatment of sewage is adjusted based on default spray concentration and fountain height.
Optionally, the described pair for the treatment of sewage carried out after pH value adjusting carries out precipitation process, comprising:
Detection carries out the turbidity of the treatment sewage after pH value adjusting；
The pre- of coagulant used in precipitation process is determined according to the turbidity of the treatment sewage after progress pH value adjusting
If regulated quantity；
Coagulant based on default regulated quantity carries out precipitation process to the treatment sewage after carrying out pH value adjusting.
Optionally, the Anaerobic Treatment includes level-one Anaerobic Treatment, secondary anaerobic processing and three-level Anaerobic Treatment；
If the nitrogen content of the treatment sewage after the aerobic oxidation is greater than default nitrogen content, to after aerobic oxidation to
It handles sewage and carries out secondary anaerobic oxidation and aerobic oxidation, comprising:
If the nitrogen content of the treatment sewage after aerobic oxidation is greater than default nitrogen content, according to after aerobic oxidation wait locate
The nitrogen content for managing sewage determines the grade for carrying out secondary Anaerobic Treatment；
Grade based on secondary Anaerobic Treatment carries out secondary anaerobic oxidation and aerobic to the treatment sewage after aerobic oxidation
Oxidation.
Optionally, the grade based on secondary Anaerobic Treatment carries out secondary anaerobism to the treatment sewage after aerobic oxidation
Oxidation and aerobic oxidation, comprising:
If the nitrogen content of the treatment sewage after aerobic oxidation is less than or equal to first preset value, to after aerobic oxidation to
It handles sewage and carries out level-one anaerobic oxidation and aerobic oxidation；
If the nitrogen content of the treatment sewage after aerobic oxidation is greater than the first preset value and is less than or equal to the second preset value,
Secondary anaerobic oxidation and aerobic oxidation are carried out to the treatment sewage after aerobic oxidation；
If the nitrogen content of the treatment sewage after aerobic oxidation is greater than the second preset value, to be processed after aerobic oxidation
Sewage carries out three-level anaerobic oxidation and aerobic oxidation.
The second aspect of the embodiment of the present invention provides a kind of sewage-treatment plant, comprising:
PH value adjustment module, for carrying out pH value adjusting to treatment sewage；
Precipitation process module, for carrying out precipitation process to the treatment sewage after progress pH value adjusting；
Anaerobic oxidation module, for carrying out anaerobic oxidation to the treatment sewage after progress precipitation process；
Aerobic oxidation module, for carrying out aerobic oxidation to the treatment sewage after progress anaerobic oxidation；
First detection module, for detecting the nitrogen content of the treatment sewage after carrying out aerobic oxidation, if after aerobic oxidation
The nitrogen content for the treatment of sewage be not more than default nitrogen content, it is determined that sewage treatment is completed；
Second detection module, it is right if the nitrogen content for the treatment sewage after aerobic oxidation is greater than default nitrogen content
Treatment sewage after aerobic oxidation carries out secondary anaerobic oxidation and aerobic oxidation.
Optionally, the pH value adjustment module includes:
PH value detection unit, for detecting the current pH value for the treatment of sewage；
PH value adjusts unit, if the current pH value for treatment sewage is led to not within the scope of default pH value
Cross acid-base solution treat processing sewage pH value be adjusted.
Optionally, the pH value adjusting unit includes:
Device for calculating is adjusted, determines that the default sprinkling of acid-base solution is dense for the current pH value according to treatment sewage
Degree and fountain height；
PH value regulator, for being adjusted based on default spray concentration and fountain height to the pH value for the treatment of sewage
Section.
Optionally, the precipitation process module includes:
Turbidity measurement unit, for detecting the turbidity of the treatment sewage after carrying out pH value adjusting；
Regulated quantity computing unit, for determining precipitation process according to the turbidity of the treatment sewage after progress pH value adjusting
The default regulated quantity of used coagulant；
Precipitation process unit, for the coagulant based on default regulated quantity to the treatment sewage after carrying out pH value adjusting
Carry out precipitation process.
The beneficial effect of sewage water treatment method and device provided by the invention is: firstly, the embodiment of the present invention passes through acid
The pH value for the treatment of sewage is adjusted in the preprocess method that basicity is adjusted, and reduces the acid-base property object in treatment sewage
The influence of confrontation biological oxidation processing；Then, the embodiment of the present invention by treatment sewage suspended matter carry out precipitation process,
Reduce the influence that the suspended material in treatment sewage handles biological oxidation；Finally, the embodiment of the present invention is to dirt to be processed
Water Nitrogen ion has carried out anaerobic oxidation and aerobic oxidation, and by the way that the higher treatment sewage of nitrogen content is carried out secondary anaerobism oxygen
Change and the mode of aerobic oxidation significantly reduces the nitrogen content in sewage.
Detailed description of the invention
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to embodiment or description of the prior art
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only of the invention some
Embodiment for those of ordinary skill in the art without creative efforts, can also be attached according to these
Figure obtains other attached drawings.
Fig. 1 is the flow diagram for the sewage water treatment method that one embodiment of the invention provides；
Fig. 2 is the structural schematic diagram for the sewage-treatment plant that one embodiment of the invention provides.
Specific embodiment
In order to which technical problems, technical solutions and advantages to be solved are more clearly understood, tie below
Accompanying drawings and embodiments are closed, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only
To explain the present invention, it is not intended to limit the present invention.
Referring to FIG. 1, Fig. 1 is the flow diagram for the sewage water treatment method that one embodiment of the invention provides.The present invention is real
Apply example in a first aspect, provides a kind of sewage water treatment method, the sewage water treatment method, comprising:
S1: pH value adjusting is carried out to treatment sewage.
In the present embodiment, treatment sewage is pre-processed by pH value adjusting, to reduce in treatment sewage
Influence of the acid and alkali substance to multi-stage biological oxidation processes.
S2: precipitation process is carried out to the treatment sewage after progress pH value adjusting.
In the present embodiment, the turbidity that the treatment sewage after carrying out pH value adjusting can be detected first, according to detecting
To pH value adjust after the turbidity for the treatment of sewage determine the default regulated quantity of coagulant used in precipitation process, then will
The coagulant of default regulated quantity, which is added in precipitation treatment device, carries out precipitation process to treatment sewage.
S3: anaerobic oxidation is carried out to the treatment sewage after progress precipitation process.
In the present embodiment, namely denitrification can be passed through by carrying out anaerobic denitrifying denitrogenation processing to treatment sewage
It reacts nitrate nitrogen (NO3 -、NO2 -Nitrogen in) be converted to N2Discharge.
S4: aerobic oxidation is carried out to the treatment sewage after progress anaerobic oxidation.
It in the present embodiment, can be namely anti-by nitrification by carrying out the processing of aerobic nitrification ammonia nitrogen removal to treatment sewage
It should be by ammonia nitrogen (NH3、NH4 +Nitrogen in) be converted to nitrate nitrogen (NO3 -、NO2 -Nitrogen in) discharge.
S5: detection carries out the nitrogen content of the treatment sewage after aerobic oxidation, if the treatment sewage after aerobic oxidation
Nitrogen content is not more than default nitrogen content, it is determined that sewage treatment is completed.
In the present embodiment, if the nitrogen content of the treatment sewage after aerobic oxidation is not more than default nitrogen content, then it represents that
Reach discharge standard by the nitrogen content in aerobic oxidation treated treatment sewage, determines that sewage treatment is completed at this time.
S6: if the nitrogen content of the treatment sewage after aerobic oxidation is greater than default nitrogen content, to after aerobic oxidation to
It handles sewage and carries out secondary anaerobic oxidation and aerobic oxidation.
In the present embodiment, if the nitrogen content of the treatment sewage after aerobic oxidation is greater than default nitrogen content, then it represents that warp
The nitrogen content crossed aerobic oxidation treated in treatment sewage is not up to discharge standard, after needing to handle aerobic oxidation at this time
Treatment sewage by reflux unit be delivered to again anaerobic pond carry out anaerobic oxidation processing, after anaerobic pond is handled again
Aerobic oxidation processing is carried out, namely secondary anaerobic oxidation and aerobic oxidation need to be carried out to the treatment sewage after aerobic oxidation.
As can be seen from the above description, the preprocess method that the embodiment of the present invention is adjusted by pH value first is to treatment sewage
PH value be adjusted, reduce the influence that the acid and alkali substance in treatment sewage handles biological oxidation.Then, pass through
Precipitation process is carried out to suspended matter in treatment sewage, reduces what the suspended material in treatment sewage handled biological oxidation
It influences.Anaerobic oxidation and aerobic oxidation finally are carried out to treatment sewage Nitrogen ion, and by the way that nitrogen content is higher wait locate
The mode that reason sewage carries out secondary anaerobic oxidation and aerobic oxidation significantly reduces the nitrogen content in sewage.
Optionally, as a kind of specific embodiment of sewage water treatment method provided in an embodiment of the present invention, to be processed
Sewage carries out pH value adjusting, may include:
Detect the current pH value for the treatment of sewage.
If the current pH value for the treatment of sewage is not within the scope of default pH value, by acid-base solution to dirt to be processed
The pH value of water is adjusted.
In the present embodiment, if the current pH value for the treatment of sewage is less than the minimum pH value of default pH value range,
Then it is adjusted by pH value of the alkaline solution to treatment sewage.
If the current pH value for the treatment of sewage is greater than the maximum pH value of default pH value range, pass through acid solution
The pH value for the treatment of sewage is adjusted.
Optionally, as a kind of specific embodiment of sewage water treatment method provided in an embodiment of the present invention, pass through soda acid
The pH value for the treatment of sewage is adjusted in solution, may include:
The default spray concentration and fountain height of acid-base solution are determined according to the current pH value for the treatment of sewage.
The pH value for the treatment of sewage is adjusted based on default spray concentration and fountain height.
In the present embodiment, treatment sewage can be stirred, when carrying out pH value adjusting to make acid-base solution
It is adequately mixed with treatment sewage.
Due to the default spray concentration and fountain height of the present embodiment calculated in advance acid-base solution, there is no need to repeated detections
Whether the pH value for the treatment of sewage is completed to determine that the pH value for the treatment of sewage is adjusted, and can be detected with effectively save pH value
The operating cost of device.
Optionally, sour to carrying out as a kind of specific embodiment of sewage water treatment method provided in an embodiment of the present invention
Treatment sewage after basicity is adjusted carries out precipitation process, may include:
Detection carries out the turbidity of the treatment sewage after pH value adjusting.
The pre- of coagulant used in precipitation process is determined according to the turbidity of the treatment sewage after progress pH value adjusting
If regulated quantity.
Coagulant based on default regulated quantity carries out precipitation process to the treatment sewage after carrying out pH value adjusting.
It in the present embodiment, can also be with to the method for carrying out the treatment sewage after pH value adjusting and carrying out precipitation process
Are as follows:
The turbidity for the treatment of sewage after the adjusting of real-time detection pH value；
If the turbidity of the treatment sewage after pH value adjusting exceeds default turbidity value, by quantitative coagulant to progress
Treatment sewage after pH value is adjusted carries out precipitation process.
That is, the turbidity of the treatment sewage after detecting that pH value is adjusted exceeds default turbidity value, then precipitating
Quantitative coagulant is added in processing unit, precipitation process is carried out to the treatment sewage after carrying out pH value adjusting.
Optionally, as a kind of specific embodiment of sewage water treatment method provided in an embodiment of the present invention, Anaerobic Treatment
Including level-one Anaerobic Treatment, secondary anaerobic processing and three-level Anaerobic Treatment.
If the nitrogen content of the treatment sewage after aerobic oxidation is greater than default nitrogen content, to be processed after aerobic oxidation
Sewage carries out secondary anaerobic oxidation and aerobic oxidation, may include:
If the nitrogen content of the treatment sewage after aerobic oxidation is greater than default nitrogen content, according to after aerobic oxidation wait locate
The nitrogen content for managing sewage determines the grade for carrying out secondary Anaerobic Treatment.
Grade based on secondary Anaerobic Treatment carries out secondary anaerobic oxidation and aerobic to the treatment sewage after aerobic oxidation
Oxidation.
In the present embodiment, settable three anaerobic ponds of Anaerobic Treatment: the first anaerobic pond, the second anaerobic pond and third anaerobism
Pond respectively corresponds level-one Anaerobic Treatment, secondary anaerobic processing and three-level Anaerobic Treatment.
If the nitrogen content of the treatment sewage after aerobic oxidation is greater than default nitrogen content, can according to after aerobic oxidation to
The nitrogen content for handling sewage determines the grade for carrying out secondary Anaerobic Treatment, namely determining that treatment sewage after aerobic oxidation is defeated
It send to the number of anaerobic pond (first, second or third).
Optionally, as a kind of specific embodiment of sewage water treatment method provided in an embodiment of the present invention, based on secondary
The grade of Anaerobic Treatment carries out secondary anaerobic oxidation and aerobic oxidation to the treatment sewage after aerobic oxidation, may include:
If the nitrogen content of the treatment sewage after aerobic oxidation is less than or equal to first preset value, to after aerobic oxidation to
It handles sewage and carries out level-one anaerobic oxidation and aerobic oxidation.
If the nitrogen content of the treatment sewage after aerobic oxidation is greater than the first preset value and is less than or equal to the second preset value,
Secondary anaerobic oxidation and aerobic oxidation are carried out to the treatment sewage after aerobic oxidation.
If the nitrogen content of the treatment sewage after aerobic oxidation is greater than the second preset value, to be processed after aerobic oxidation
Sewage carries out three-level anaerobic oxidation and aerobic oxidation.
In the present embodiment, settable three anaerobic ponds of Anaerobic Treatment: the first anaerobic pond, the second anaerobic pond and third anaerobism
Pond respectively corresponds level-one Anaerobic Treatment, secondary anaerobic processing and three-level Anaerobic Treatment.
If the nitrogen content of the treatment sewage after aerobic oxidation is less than or equal to the first preset value, first will be after aerobic oxidation
Treatment sewage is delivered to the first anaerobic pond and carries out anaerobic oxidation, then the treatment sewage after progress anaerobic oxidation is conveyed most intimate friend
Oxygen pond carries out aerobic oxidation.
If the nitrogen content of the treatment sewage after aerobic oxidation is greater than the first preset value and is less than or equal to the second preset value,
First by the treatment sewage after aerobic oxidation be delivered to the second anaerobic pond carry out anaerobic oxidation, then by carry out anaerobic oxidation after to
It handles sewage transport to aerobic tank and carries out aerobic oxidation.
If the nitrogen content of the treatment sewage after aerobic oxidation be greater than the second preset value, first by after aerobic oxidation wait locate
It manages sewage transport to third anaerobic pond and carries out anaerobic oxidation, then the treatment sewage after progress anaerobic oxidation is delivered to aerobic tank
Carry out aerobic oxidation.
Wherein, the order of connection (namely processing sequence for the treatment of sewage) of biological oxidation processing unit are as follows: third anaerobism
Pond, the second anaerobic pond, the first anaerobic pond, aerobic tank.
The second aspect of the embodiment of the present invention provides a kind of sewage-treatment plant, comprising:
PH value adjustment module 100, for carrying out pH value adjusting to treatment sewage.
Precipitation process module 200, for carrying out precipitation process to the treatment sewage after progress pH value adjusting.
Anaerobic oxidation module 300, for carrying out anaerobic oxidation to the treatment sewage after progress precipitation process.
Aerobic oxidation module 400, for carrying out aerobic oxidation to the treatment sewage after progress anaerobic oxidation.
First detection module 500, for detecting the nitrogen content of the treatment sewage after carrying out aerobic oxidation, if aerobic oxidation
The nitrogen content for the treatment of sewage afterwards is not more than default nitrogen content, it is determined that sewage treatment is completed.
Second detection module 600, if the nitrogen content for the treatment sewage after aerobic oxidation is greater than default nitrogen content,
Secondary anaerobic oxidation and aerobic oxidation are carried out to the treatment sewage after aerobic oxidation.
Optionally, as a kind of specific embodiment of sewage-treatment plant provided in an embodiment of the present invention, pH value tune
Saving module 100 may include:
PH value detection unit 110, for detecting the current pH value for the treatment of sewage.
PH value adjusts unit 120, if the current pH value for treatment sewage is not being preset within the scope of pH value,
It is adjusted by pH value of the acid-base solution to treatment sewage.
Optionally, as a kind of specific embodiment of sewage-treatment plant provided in an embodiment of the present invention, pH value tune
Saving unit 120 may include:
Device for calculating 121 is adjusted, the default spray of acid-base solution is determined for the current pH value according to treatment sewage
Spill concentration and fountain height.
PH value regulator 122, for based on default spray concentration and fountain height to the pH value for the treatment of sewage into
Row is adjusted.
Optionally, as a kind of specific embodiment of sewage-treatment plant provided in an embodiment of the present invention, precipitation process
Module 200 may include:
Turbidity measurement unit 210, for detecting the turbidity of the treatment sewage after carrying out pH value adjusting.
Regulated quantity computing unit 220, for determining precipitating according to the turbidity of the treatment sewage after progress pH value adjusting
The default regulated quantity of coagulant used in handling.
Precipitation process unit 230, for the coagulant based on default regulated quantity to be processed after carrying out pH value adjusting
Sewage carries out precipitation process.
Optionally, as a kind of specific embodiment of sewage-treatment plant provided in an embodiment of the present invention, the second detection
Module 600 may include:
Level de-termination unit 610 is handled, if the nitrogen content for the treatment sewage after aerobic oxidation is greater than default nitrogen and contains
Amount then determines the grade for carrying out secondary Anaerobic Treatment according to the nitrogen content of the treatment sewage after aerobic oxidation.
Secondary oxidation unit 620, for the grade based on secondary Anaerobic Treatment to the treatment sewage after aerobic oxidation into
The secondary anaerobic oxidation of row and aerobic oxidation.
Optionally, as a kind of specific embodiment of sewage-treatment plant provided in an embodiment of the present invention, based on secondary
The grade of Anaerobic Treatment carries out secondary anaerobic oxidation and aerobic oxidation to the treatment sewage after aerobic oxidation, may include:
If the nitrogen content of the treatment sewage after aerobic oxidation is less than or equal to first preset value, to after aerobic oxidation to
It handles sewage and carries out level-one anaerobic oxidation and aerobic oxidation.
If the nitrogen content of the treatment sewage after aerobic oxidation is greater than the first preset value and is less than or equal to the second preset value,
Secondary anaerobic oxidation and aerobic oxidation are carried out to the treatment sewage after aerobic oxidation.
If the nitrogen content of the treatment sewage after aerobic oxidation is greater than the second preset value, to be processed after aerobic oxidation
Sewage carries out three-level anaerobic oxidation and aerobic oxidation.
More than, only a specific embodiment of the invention, but scope of protection of the present invention is not limited thereto, and it is any to be familiar with
Those skilled in the art in the technical scope disclosed by the present invention, can readily occur in various equivalent modifications or substitutions,
These modifications or substitutions should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be wanted with right
Subject to the protection scope asked.
Claims (10)
1. a kind of sewage water treatment method characterized by comprising
PH value adjusting is carried out to treatment sewage；
Precipitation process is carried out to the treatment sewage after progress pH value adjusting；
Anaerobic oxidation is carried out to the treatment sewage after progress precipitation process；
Aerobic oxidation is carried out to the treatment sewage after progress anaerobic oxidation；
Detection carries out the nitrogen content of the treatment sewage after aerobic oxidation, if the nitrogen content of the treatment sewage after aerobic oxidation is not
Greater than default nitrogen content, it is determined that sewage treatment is completed；
If the nitrogen content of the treatment sewage after aerobic oxidation is greater than default nitrogen content, to the treatment sewage after aerobic oxidation
Carry out secondary anaerobic oxidation and aerobic oxidation.
2. sewage water treatment method as described in claim 1, which is characterized in that described to carry out pH value tune to treatment sewage
Section, comprising:
Detect the current pH value for the treatment of sewage；
If the current pH value for the treatment of sewage is not within the scope of default pH value, by acid-base solution to treatment sewage
PH value is adjusted.
3. sewage water treatment method as claimed in claim 2, which is characterized in that it is described by acid-base solution to treatment sewage
PH value is adjusted, comprising:
The default spray concentration and fountain height of acid-base solution are determined according to the current pH value for the treatment of sewage；
The pH value for the treatment of sewage is adjusted based on default spray concentration and fountain height.
4. sewage water treatment method as described in claim 1, which is characterized in that be processed after described pair of progress pH value adjusting
Sewage carries out precipitation process, comprising:
Detection carries out the turbidity of the treatment sewage after pH value adjusting；
The default tune of coagulant used in precipitation process is determined according to the turbidity of the treatment sewage after progress pH value adjusting
Section amount；
Coagulant based on default regulated quantity carries out precipitation process to the treatment sewage after carrying out pH value adjusting.
5. sewage water treatment method as described in claim 1, which is characterized in that the Anaerobic Treatment include level-one Anaerobic Treatment,
Secondary anaerobic processing and three-level Anaerobic Treatment；
If the nitrogen content of the treatment sewage after the aerobic oxidation is greater than default nitrogen content, to be processed after aerobic oxidation
Sewage carries out secondary anaerobic oxidation and aerobic oxidation, comprising:
If the nitrogen content of the treatment sewage after aerobic oxidation is greater than default nitrogen content, according to the dirt to be processed after aerobic oxidation
The nitrogen content of water determines the grade for carrying out secondary Anaerobic Treatment；
Grade based on secondary Anaerobic Treatment carries out secondary anaerobic oxidation and aerobic oxidation to the treatment sewage after aerobic oxidation.
6. sewage water treatment method as claimed in claim 5, which is characterized in that the grade based on secondary Anaerobic Treatment is to good
Treatment sewage after oxygen oxidation carries out secondary anaerobic oxidation and aerobic oxidation, comprising:
If the nitrogen content of the treatment sewage after aerobic oxidation is less than or equal to the first preset value, to be processed after aerobic oxidation
Sewage carries out level-one anaerobic oxidation and aerobic oxidation；
If the nitrogen content of the treatment sewage after aerobic oxidation is greater than the first preset value and is less than or equal to the second preset value, to good
Treatment sewage after oxygen oxidation carries out secondary anaerobic oxidation and aerobic oxidation；
If the nitrogen content of the treatment sewage after aerobic oxidation is greater than the second preset value, to the treatment sewage after aerobic oxidation
Carry out three-level anaerobic oxidation and aerobic oxidation.
7. a kind of sewage-treatment plant characterized by comprising
PH value adjustment module, for carrying out pH value adjusting to treatment sewage；
Precipitation process module, for carrying out precipitation process to the treatment sewage after progress pH value adjusting；
Anaerobic oxidation module, for carrying out anaerobic oxidation to the treatment sewage after progress precipitation process；
Aerobic oxidation module, for carrying out aerobic oxidation to the treatment sewage after progress anaerobic oxidation；
First detection module, for detect carry out aerobic oxidation after treatment sewage nitrogen content, if after aerobic oxidation to
The nitrogen content for handling sewage is not more than default nitrogen content, it is determined that sewage treatment is completed；
Second detection module, if the nitrogen content for the treatment sewage after aerobic oxidation is greater than default nitrogen content, to aerobic
Treatment sewage after oxidation carries out secondary anaerobic oxidation and aerobic oxidation.
8. sewage-treatment plant as claimed in claim 7, which is characterized in that the pH value adjustment module includes:
PH value detection unit, for detecting the current pH value for the treatment of sewage；
PH value adjusts unit, if the current pH value for treatment sewage passes through acid not within the scope of default pH value
The pH value for the treatment of sewage is adjusted in aqueous slkali.
9. sewage-treatment plant as claimed in claim 8, which is characterized in that the pH value adjusts unit and includes:
Adjust device for calculating, for the current pH value according to treatment sewage determine acid-base solution default spray concentration and
Fountain height；
PH value regulator, for the pH value for the treatment of sewage to be adjusted based on default spray concentration and fountain height.
10. sewage-treatment plant as claimed in claim 7, which is characterized in that the precipitation process module includes:
Turbidity measurement unit, for detecting the turbidity of the treatment sewage after carrying out pH value adjusting；
Regulated quantity computing unit, for determining that precipitation process is made according to the turbidity of the treatment sewage after progress pH value adjusting
The default regulated quantity of coagulant；
Precipitation process unit carries out the treatment sewage after carrying out pH value adjusting for the coagulant based on default regulated quantity
Precipitation process.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111323538A (en) * | 2020-02-27 | 2020-06-23 | 深圳市美宜佳机电设备有限公司 | Method and device for monitoring content of organic waste liquid nitrogen and nitrogen removal method of organic waste liquid |
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