CN106315717B - A kind of MVR waste water evaporation concentration device - Google Patents
A kind of MVR waste water evaporation concentration device Download PDFInfo
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- CN106315717B CN106315717B CN201610826145.6A CN201610826145A CN106315717B CN 106315717 B CN106315717 B CN 106315717B CN 201610826145 A CN201610826145 A CN 201610826145A CN 106315717 B CN106315717 B CN 106315717B
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- waste water
- separator
- evaporator
- water
- pump
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Classifications
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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
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/048—Purification of waste water by evaporation
-
- 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
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/041—Treatment of water, waste water, or sewage by heating by distillation or evaporation by means of vapour compression
-
- 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
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/06—Flash evaporation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/04—Flow arrangements
- C02F2301/046—Recirculation with an external loop
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/10—Energy recovery
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The present invention relates to a kind of MVR waste water evaporation concentration systems.The present invention includes the separator for being evaporated the evaporator of processing to raw material waste water and being separated to the air-water mixture generated in evaporator, the concentrating spent liquor generated in the separator is backflowed by concentrated water pump to being circulated in separator with realizing, and the isolated secondary steam of the separator enters the heat source that evaporator composition heats the raw material waste water after vapor compressor boost.The present invention ensures concentrating spent liquor constant flow and even concentration in separator by concentrated water pump, effectively prevent because of pipeline blockage and system unstability problem caused by crystallizing in separator when raw material Waste water concentrating to nearly saturation, while reducing system energy consumption.In addition heat caused by cyclic utilization system of the present invention itself, reduces system operation cost, improves the applicability and reliability of existing MVR evaporation concentration device.
Description
Technical field
The invention belongs to field of waste water treatment, are specifically related to a kind of MVR waste water evaporation concentration device.
Background technique
Waste component is complicated in the industries such as petroleum, chemical industry, pharmacy, plating, enormous amount, although using biochemistry, electrodialysis,
Most of water body qualified discharge can be achieved after the methods of reverse osmosis processing, but part high-concentration hardly-degradable Industrial Wastewater Treatment is still
It is technological difficulties, it is comparatively ideal technical method that inorganic salts in waste water, which are separated removal, using the method for evaporative crystallization.Traditional
There is the problems such as energy consumption is high, the device is complicated, cost for wastewater treatment is high in reaction kettle, single effect evaporation, multi-effect evaporating device etc., utilize
MVR technical treatment high-concentration hardly-degradable waste water is technique direction.Traditional MVR device only includes evaporator, separator, vapor
Compressor and other ancillary equipments.When high slat-containing wastewater is concentrated into nearly saturation, often there is part in existing MVR device separator
Inorganic salts crystallization, causes heat exchanger or line clogging, influences unit efficiency and reliability.
Summary of the invention
In order to solve the above technical problem, the present invention provides a kind of MVR waste water evaporation concentration devices.
In order to achieve the object of the present invention, the invention adopts the following technical scheme:
A kind of MVR waste water evaporation concentration device, including being evaporated the evaporator of processing to raw material waste water and to evaporation
The separator that the air-water mixture generated in device is separated, the concentrating spent liquor of the separator bottom pumped by concentrated water backflow to
It is circulated in separator with realizing, the isolated secondary steam of the separator enters institute after vapor compressor boost
It states evaporator and constitutes the heat source heated to the raw material waste water.
Preferably, it is also connected on the concentrated water pump and the connecting pipe of separator by the concentrating spent liquor discharger
Concentrated water valve.
Preferably, which further includes carrying out pretreated preheater, flash tank to raw material waste water；The raw material waste water by
Enter the flash vaporized separation that the flash tank realizes low boiling impurity in raw material waste water after the preheater preheating.
Further, which further includes condenser, cooler, and the raw material waste water passes sequentially through the condenser, cold
But enter preheater after device；The isolated low boiling impurity gas of the flash tank enters the condenser by condenser
Raw material waste water is condensed into liquid and is stored in temporary storage tank；The mixture of the incoagulable gas and steam that are generated in the evaporator
It is stored in condensate water pot after the raw material waste water cooling in the cooler into the cooler.
Preferably, the condensed water that the secondary steam is formed after evaporator is constituted to raw material waste water in the preheater
The heat source heated, the condensed water are discharged into condensate water pot after the preheater.
Preferably, the exhaust pipe for leading to evaporator of the vapor compressor is equipped with bypass high temperature steam pipeline,
The bypass high temperature steam pipeline is equipped with steam valve.
Preferably, the separator is connected with for the concentrating spent liquor to be pumped to again and be evaporated in the evaporator
Circulating pump, the flash tank, which is connected with, is pumped to the waste water pump being evaporated in the evaporator for the pressurization of raw material waste water, described
The outlet pipeline of waste water pump and the outlet pipeline for flowing to the circulating pump.
Preferably, the condensate water pot is connected with the condensate pump that condensed water is discharged, the outlet pipe of the condensate pump
Road is equipped with outlet valve；It is connected with vacuum pump at the top of the condensate water pot, the outlet of the vacuum pump is communicated with atmosphere.
The beneficial effects of the present invention are:
(1) present invention ensures concentrating spent liquor constant flow and even concentration in separator by concentrated water pump, prevents separation device
It is interior to crystallize, while the concentrating spent liquor constantly generated in separator is passed through into concentrated water valve discharger.I.e. the present invention is effectively anti-
Only reduced simultaneously when raw material Waste water concentrating to nearly saturation because of pipeline blockage and device destabilization problems caused by being crystallized in separator
Plant energy consumption.In addition heat caused by recycling device of the present invention itself, reduces device operating cost, improves existing
The applicability and reliability of MVR evaporation concentration device.
(2) raw material waste water of the present invention is provided with preheater, flash tank before entering evaporator, to remove in raw material waste water
Low boiling impurity, effectively prevent because of low boiling impurity in company with vapor and meanwhile due to evaporate into vapor compressor caused by pressure
The variation of contracting machine operating condition and other operation troubles.The method is particularly suited for the high-concentration hardly-degradable waste water containing low boiling impurity
The processing of (such as oil extraction waste water).
(3) it is i.e. low using the completion of raw material waste water to enter condenser for the low boiling impurity gas generated in flash tank of the present invention
Then the collection storage of low boiling impurity liquid is completed in the condensation of boiling contaminants gas using temporary storage tank.It is produced in the evaporator
The mixture of raw incoagulable gas and steam enters the cooler, by being cooled down by the raw material waste water of the cooler
And condensed water is formed, it is stored in condensate water pot later, incoagulable gas here refers to after condensation process not with water
Steam is condensed into the gas of liquid together.The present invention realizes the cold source using device itself by setting condenser, cooler
It is cooled down to needing to carry out cooling steam, is put into without additional cold source, reduce cost for wastewater treatment.
(4) secondary steam of the present invention enters preheater after evaporator, realizes and the raw material in the preheater
Waste water exchanges heat, and one side raw material waste water has obtained the pre-heat treatment, and secondary steam described in still further aspect has been obtained into one
The cooling of step, the present invention take full advantage of the cold source and heat source of device itself, greatly reduce energy consumption and device operating cost.
(5) heretofore described circulating pump, waste water pump may be implemented the mixing of two-way waste water and be pumped into evaporator and be evaporated
Processing, it is ensured that without the dry problem of heat exchange wall in evaporator.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention.
Attached meaning marked in the figure is as follows:
1- condensate pump 2- vacuum pump 3- transh pump 4- waste water pump 5- circulating pump 6- concentrated water pump
7- concentrated water valve 8- vapor compressor 9- evaporator 10- separator 11- condenser
12- cooler 13- preheater 14- flash tank 15- temporary storage tank 16- condensate water pot
17- inlet valve 18- outlet valve 19- steam valve
Specific embodiment
More specific detail is made to technical solution of the present invention below with reference to embodiment:
Secondary steam described in text, steam are the steam of water.
The present invention includes the evaporator 9 successively passed through for raw material waste water, separator 10, and the evaporator 9 is to raw material waste water
It is evaporated, the separator 10 separates the air-water mixture generated in evaporator 9, and 10 bottom of separator generates
Concentrating spent liquor backflowed by concentrated water pump 6 to being circulated with realizing in separator 10, generation is secondary in the separator 10
Steam enters the evaporator 9 after the pressurization of vapor compressor 8 and constitutes the heat source heated to the raw material waste water.Wherein
Raw material waste water is located at the evaporation side of the evaporator 9, and the secondary steam is located at the condensation side of evaporator 9.The present invention passes through dense
Water pump 6 ensures concentrating spent liquor constant flow and even concentration in separator 10, prevents separation 10 bottom of device and crystallizes, and simultaneously will
The concentrating spent liquor constantly generated in separator 10 passes through 7 discharger of concentrated water valve.The method can be adapted to containing low boiling impurity
High-concentration hardly-degradable waste water (such as oil extraction waste water), because of 10 bottom crystal of separator when can prevent raw material Waste water concentrating to nearly saturation
Caused by pipeline blockage and device unstability, while reducing plant energy consumption.In addition produced by recycling device of the present invention itself
Heat, reduce device operating cost, improve the applicability and reliability of existing MVR evaporation concentration device.
The device further includes carrying out pretreated preheater 13, flash tank 14 to raw material waste water；The raw material waste water is by institute
It states and enters the flash vaporized separation that the flash tank 14 realizes low boiling impurity in raw material waste water after preheater 13 preheats.The present invention
Raw material waste water is provided with preheater 13, flash tank 14 before entering evaporator 9, to remove the low boiling impurity in raw material waste water,
Effectively prevent because low boiling impurity in company with vapor simultaneously evaporate into vapor compressor 8 due to caused by compressor run work
Condition variation and other operation troubles.The method is (as useless in recovered the oil particularly suitable for the high-concentration hardly-degradable waste water containing low boiling impurity
Water) processing.
The device further includes condenser 11, cooler 12, the raw material waste water before entering preheater 13 first successively into
Enter the condenser 11, cooler 12；The isolated low boiling impurity gas of the flash tank 14 enters the condenser 11
It is condensed into liquid and is stored in temporary storage tank 15 by the raw material waste water in condenser；The incoagulability gas generated in the evaporator 9
The mixture of body and steam enters the cooler 12 and is stored in condensate water pot after the raw material waste water cooling in the cooler
In 16.Low boiling impurity (such as ethyl alcohol) gas generated in flash tank 14 of the present invention enters condenser 11 i.e. using raw material waste water
The condensation of low boiling impurity gas is completed, the collection storage of low boiling impurity liquid is then completed using temporary storage tank 15.The steaming
The mixture for sending out the incoagulable gas and steam that generate in device 9 enters the cooler 12, by the original by the cooler 12
Material waste water cooled down and formed condensed water, be stored in condensate water pot 16 later, incoagulable gas here refer to by
The gas of liquid is not condensed into after condensation process with vapor.The present invention is realized by setting condenser 11, cooler 12
It is cooled down to needing to carry out cooling steam using the cold source of device itself, puts into, reduce useless without additional cold source
Cost of water treatment.
The condensed water composition that the secondary steam is formed after evaporator 9 carries out raw material waste water in the preheater 13
The heat source of heating, the condensed water are discharged into condensate water pot 16 after the preheater 13.Secondary steam warp of the present invention
Enter preheater 13 after pervaporation device 9, realization exchanges heat with the raw material waste water in the preheater 13, one side raw material waste water
The pre-heat treatment is obtained, secondary steam described in still further aspect has obtained further cooling, and the present invention takes full advantage of dress
The cold source and heat source for setting itself greatly reduce energy consumption and device operating cost.
The separator 10 is connected with is pumped to the circulation being evaporated in the evaporator 9 for the concentrating spent liquor again
Pump 5, the flash tank 14, which is connected with, is pumped to the waste water pump 4 being evaporated in the evaporator 9 for the pressurization of raw material waste water, described
The outlet pipeline of waste water pump 4 and the outlet pipeline for flowing to the circulating pump 5.Heretofore described circulating pump 5, waste water pump 4 can be with
It realizes that the mixing of two-way waste water is pumped into evaporator 9 and is evaporated processing, it is ensured that without the dry problem of heat exchange wall in evaporator 9.
The condensate water pot 16 is connected with the condensate pump 1 that condensed water is discharged, on the outlet pipeline of the condensate pump 1
Equipped with outlet valve 18；Vacuum pump 2 is connected at the top of the condensate water pot 16, the outlet of the vacuum pump 2 is communicated with atmosphere.It is described
Vacuum pump 2 maintains have certain vacuum degree in evaporator 9, and excludes incoagulable gas and steam in evaporator 9, it is ensured that dress
It sets in stable evaporating state.
Claims (5)
1. a kind of MVR waste water evaporation concentration device, including being evaporated the evaporator (9) of processing to waste water and to evaporator
(9) separator (10) that the gas-vapor mix generated in is separated, it is characterised in that: the concentration of separator (10) bottom
Waste liquid is backflowed by concentrated water pump (6) to being circulated in separator (10) with realizing, the separator (10) it is isolated two
Secondary steam enters the evaporator (9) after vapor compressor (8) are pressurized and constitutes the heat source heated to the waste water；
The device further includes carrying out pretreated preheater (13), flash tank (14) to waste water；The waste water is by the preheater
(13) enter the flash vaporized separation for the flash tank (14) realizing low boiling impurity in waste water after preheating；The flash tank (14)
It is connected with the pressurization of the waste water after removing low boiling impurity and is pumped to the waste water pump (4) being evaporated in the evaporator (9)；
The device further includes condenser (11), cooler (12), and raw material waste water passes sequentially through the condenser (11), cooler
(12) enter preheater (13) afterwards；The isolated low boiling impurity gas of the flash tank (14) enters the condenser (11)
It is condensed into liquid and is stored in temporary storage tank (15) by the raw material waste water in condenser；What is generated in the evaporator (9) does not coagulate
Property gas and steam mixture enter the cooler (12) by the waste water in the cooler it is cooling after be stored in condensed water
In tank (16)；
The condensed water composition that the secondary steam is formed after evaporator (9) heats the preheater (13) interior waste water
Heat source, the condensed water is discharged into condensate water pot (16) after the preheater (13).
2. MVR waste water evaporation concentration device as described in claim 1, it is characterised in that: the concentrated water pump (6) and separator
(10) it is also connected on connecting pipe by the concentrated water valve (7) of the concentrating spent liquor discharger.
3. MVR waste water evaporation concentration device as described in claim 1, it is characterised in that: the vapor compressor (8) is led to
It is equipped with bypass high temperature steam pipeline to the exhaust pipe of evaporator (9), the bypass high temperature steam pipeline is equipped with steam valve
(19)。
4. MVR waste water evaporation concentration device as described in claim 1, it is characterised in that: the separator (10) be connected with by
The concentrating spent liquor is pumped to the circulating pump (5) being evaporated in the evaporator (9), the water outlet of the waste water pump (4) again
Pipeline and the outlet pipeline for flowing to the circulating pump (5).
5. MVR waste water evaporation concentration device as described in claim 1, it is characterised in that: the condensate water pot (16) is connected with
The outlet pipeline of the condensate pump (1) that condensed water is discharged, the condensate pump (1) is equipped with outlet valve (18)；The condensation
It is connected with vacuum pump (2) at the top of water pot (16), the outlet of the vacuum pump (2) is communicated with atmosphere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610826145.6A CN106315717B (en) | 2016-09-14 | 2016-09-14 | A kind of MVR waste water evaporation concentration device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610826145.6A CN106315717B (en) | 2016-09-14 | 2016-09-14 | A kind of MVR waste water evaporation concentration device |
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| CN106315717A CN106315717A (en) | 2017-01-11 |
| CN106315717B true CN106315717B (en) | 2019-05-28 |
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|---|---|---|---|---|
| CN107151937B (en) * | 2017-05-12 | 2019-10-11 | 陕西科技大学 | A tail gas condensed water circulation device |
| CN107954560A (en) * | 2017-11-08 | 2018-04-24 | 西安协力动力科技有限公司 | The technique that vapor recompression is concentrated by evaporation joint flue spray technique processing waste water |
| CN108622971B (en) * | 2018-05-30 | 2021-04-16 | 哈尔滨理工大学 | MVR energy saving and environmental protection sewage treatment system using new energy |
| CN108946850B (en) * | 2018-08-14 | 2021-07-16 | 河北蓝江生物环保科技有限公司 | Method for reprocessing evaporation raffinate |
| CN111056580A (en) * | 2019-12-11 | 2020-04-24 | 上海缔森能源技术有限公司 | Vinyl sulfate waste water treatment and recovery system |
| CN117486293B (en) * | 2023-12-12 | 2024-08-23 | 蓝色起源环境科技(常州)有限公司 | Water treatment system and working method thereof |
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| CN102616973A (en) * | 2012-04-17 | 2012-08-01 | 常州光辉生物科技有限公司 | Method and device for processing high-saline organic wastewater |
| CN204395479U (en) * | 2015-01-18 | 2015-06-17 | 丁武轩 | A kind of continuous evaporative crystallization device of function of mechanical steam recompression |
| CN205275243U (en) * | 2015-12-04 | 2016-06-01 | 武汉宏澳绿色能源工程有限责任公司 | Evaporation plant of board -like forced circulation's of MVR landfill leachate reverse osmosis dope |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101456635A (en) * | 2008-12-17 | 2009-06-17 | 深圳市能源环保有限公司 | Process and system for treating electric power plant waste water |
| CN102603023A (en) * | 2012-03-23 | 2012-07-25 | 郭朝军 | Method and equipment for carrying out evaporation-concentration treatment on saline water by utilizing solar energy and air |
| CN102616973A (en) * | 2012-04-17 | 2012-08-01 | 常州光辉生物科技有限公司 | Method and device for processing high-saline organic wastewater |
| CN204395479U (en) * | 2015-01-18 | 2015-06-17 | 丁武轩 | A kind of continuous evaporative crystallization device of function of mechanical steam recompression |
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