CN210117309U - Landfill leachate discharge to reach standard high-efficiency processing system - Google Patents
Landfill leachate discharge to reach standard high-efficiency processing system Download PDFInfo
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- CN210117309U CN210117309U CN201920564334.XU CN201920564334U CN210117309U CN 210117309 U CN210117309 U CN 210117309U CN 201920564334 U CN201920564334 U CN 201920564334U CN 210117309 U CN210117309 U CN 210117309U
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Abstract
The utility model provides a landfill leachate discharge to reach standard high-efficiency processing system, including pretreatment unit, evaporating system unit and comdenstion water processing unit up to standard, pretreatment unit's the end of intaking links to each other with the play water end of adjusting the buffer pool, and the raw water is squeezed into to adjusting the buffer pool through pipeline and water pump, pretreatment unit includes pH value surge tank and the degasser that sets gradually along the processing direction, degasser's play water end links to each other with evaporating system unit, evaporating system unit includes that MVR evaporation crystallization device, hydroextractor and the mother liquor that set gradually along the processing direction irritate, be connected with the comdenstion water processing unit up to standard between pretreatment unit and the evaporating system unit, comdenstion water processing unit up to standard is equipped with comdenstion water aftertreatment device. The system shortens the percolate treatment process, can reduce the discharge amount of percolate concentrated solution, reduces the percolate treatment operating cost, and ensures that the effluent is stably discharged up to the standard.
Description
[ technical field ] A method for producing a semiconductor device
The utility model relates to a landfill leachate processing system's technical field, especially a landfill leachate discharge to reach standard high-efficient processing system.
[ background of the invention ]
With the stricter and stricter requirements of China on the discharge limit of the landfill leachate, the traditional process mainly based on biochemical treatment cannot meet the discharge standard requirements, and the combined process of biochemical treatment and membrane advanced treatment taking a membrane technology as a core gradually becomes the mainstream process of leachate treatment. Wherein, the membrane method advanced treatment process produces about 15% -30% membrane concentrate, compares original leachate, and salinity and pollutant concentration are higher in the concentrate, if can not handle properly and directly discharge can cause serious secondary pollution in the environment.
The traditional landfill leachate treatment system has long treatment process, generally comprises a biochemical system, pretreatment, membrane concentration, post-treatment and the like, and has high operation cost; the overall concentration ratio is low, the discharge amount of percolate concentrate is large, the concentration ratio is not more than 5 times, the operation is unstable, and a large amount of membrane systems are paralyzed due to leachate recharge, so that the standard discharge high-efficiency treatment system for the landfill leachate is provided.
[ Utility model ] content
The utility model aims at solving the problem among the prior art, provide a landfill leachate discharge to reach standard high-efficiency processing system, shorten filtration liquid treatment process, can reduce the concentrated liquid discharge of filtration liquid, reduce filtration liquid and handle the working costs, guarantee that the stable discharge to reach standard of play water.
In order to realize the purpose, the utility model provides a landfill leachate discharge to reach standard high-efficiency processing system, including pretreatment unit, evaporation system unit and comdenstion water treatment unit up to standard, pretreatment unit's the end of intaking links to each other with the play water end of adjusting the buffer pool, and the raw water is squeezed into to adjusting the buffer pool through pipeline and water pump, pretreatment unit includes pH value adjusting tank and the degasser that sets gradually along the processing direction, the play water end of degasser links to each other with evaporation system unit, evaporation system unit includes MVR evaporation crystallization device, hydroextractor and the mother liquor that set gradually along the processing direction and irritates, the play water end of degasser is connected to MVR evaporation crystallization device's raw water buffer tank through pipeline and water pump, the play water end of raw water buffer tank is connected to MVR evaporation crystallization device's MVR evaporation main part device through pipeline and pump, the ejection of compact of MVR evaporation main part device is squeezed into the magma buffer tank through the discharge pump, the discharge end of magma buffer tank links to each other with the hydroextractor, the backflow pipeline that the mother liquor was irritated passes through the mother liquor pump and links to each other with MVR evaporation subject device, be connected with comdenstion water processing unit up to standard between pretreatment unit and the evaporation system unit, comdenstion water processing unit up to standard is equipped with comdenstion water aftertreatment device, the magma buffer tank links to each other with comdenstion water aftertreatment device through going out the water pump, and the evaporation goes out to squeeze into comdenstion water aftertreatment device after the water is cushioned through the magma buffer tank and handles.
As preferred, comdenstion water processing unit up to standard still is including setting gradually regulation water pitcher, pre-heater, the integration circulation heater between degasser, MVR evaporation crystallization device, still be connected with MVR vapor compressor between MVR evaporation crystallization device and the integration circulation heater, still be connected with the comdenstion water pitcher between integration circulation heater and the pre-heater, the pre-heater passes through comdenstion water after-treatment device and links to each other with the regulation water pitcher, and the evaporation play water of evaporating system unit gets into comdenstion water after-treatment device after passing through the magma buffer tank buffering, and reverse osmosis system produces water up to standard and discharges, and reverse osmosis concentrate gets back to the regulation water pitcher and.
Preferably, the effluent of the adjusting buffer tank is connected with a coarse filter through a pipeline and a pump to remove suspended matters contained in raw water, the effluent of the coarse filter is delivered to the pretreatment unit, the water outlet end of the coarse filter is connected with the pH value adjusting tank, and the effluent of the coarse filter automatically flows into the pH value adjusting tank.
Preferably, the water inlet end of the pH value adjusting tank is connected with the water outlet end of the adjusting buffer pool, the tank bottom of the pH value adjusting tank is connected with a water outlet pump, the pH value adjusting tank is connected with a deaerator through the water outlet pump, and the percolate with the adjusted pH value is pumped into the deaerator through the water outlet pump.
Preferably, the pH value adjusting tank is connected with an acid adding device, a defoaming agent adding device and an alkali adding device.
Preferably, the discharge end of the crystal slurry buffer tank is connected with a dehydrator, the materials are discharged to the dehydrator, waste salt is discharged outside, mother liquor flows into a mother liquor tank and flows back to the MVR evaporation main body device through a mother liquor pump, and part of concentrated solution is discharged to a landfill or is burnt.
Preferably, the pH value of the pH value adjusting tank is controlled within the range of 1-13 in the percolate treatment process.
Preferably, the integrated circulation heater is one of a forced circulation type heater, a rising film type heater, a plate heating type heater and a natural circulation type heater.
Preferably, a steam washing device or a demister device is arranged between the MVR evaporative crystallization device and the MVR steam compressor.
Preferably, the condensed water post-treatment device is a system device capable of removing ammonia nitrogen and COD, and comprises one or more of an RO membrane concentration system, an ion exchange system and an advanced oxidation system.
The utility model has the advantages that: the utility model discloses the system has the flow and simplifies, has the concentrated relative altitude to present landfill RO concentrate or stoste, and process optimization has the operation simultaneously and simplifies, and the operation is stable, and advantage that the treatment cost is low.
1. Because of using the mechanical vapor recompression technology, the evaporation process is very energy-saving;
2. the concentration ratio of the system is improved due to the adoption of a high-efficiency evaporation concentration crystallization technology;
3. due to the adoption of the integrated design of evaporation and continuous crystallization, the production process is continuous and automatic, and the efficiency is high;
4. the utility model discloses still supporting membrane system device to the comdenstion water discharge to reach standard of having adopted for the overall system is perfect.
The features and advantages of the present invention will be described in detail by embodiments with reference to the accompanying drawings.
[ description of the drawings ]
Figure 1 is the utility model relates to a landfill leachate discharge to reach standard high efficiency processing system's schematic structure diagram.
[ detailed description ] embodiments
Referring to fig. 1, the utility model relates to a landfill leachate discharge to reach standard high efficiency processing system, including pretreatment unit, evaporation system unit and comdenstion water processing unit up to standard, the water inlet end of pretreatment unit links to each other with the play water end of regulation buffer pool 1, and the raw water is squeezed into to regulation buffer pool 1 through pipeline and water pump, pretreatment unit includes pH value adjusting tank 2 and degasser 3 that set gradually along the processing direction, the play water end of degasser 3 links to each other with evaporation system unit, evaporation system unit includes MVR evaporation crystallization device 4, hydroextractor 5 and mother liquor that set gradually along the processing direction and irritates 6, the play water end of degasser 3 is connected to the raw water buffer tank of MVR evaporation crystallization device 4 through pipeline and water pump, the play water end of raw water buffer tank is connected to MVR evaporation main body device of MVR evaporation crystallization device 4 through pipeline and pump, the ejection of compact of MVR evaporation subject device is squeezed into the magma buffer tank through the discharge pump, the discharge end and the hydroextractor 5 of magma buffer tank link to each other, the backflow pipeline that 6 was irritated to the mother liquor passes through the mother liquor pump and links to each other with MVR evaporation subject device, the discharge end and the hydroextractor 5 of magma buffer tank link to each other, and the blowing is to hydroextractor 5, and the waste salt is outer to be arranged outward, and the mother liquor is irritated 6 to the mother liquor and is flowed back MVR evaporation subject device through the mother liquor pump, and partial concentrate is discharged and is gone the landfill yard or burn. Be connected with comdenstion water processing unit up to standard between preprocessing unit and the evaporation system unit, comdenstion water processing unit up to standard is equipped with comdenstion water aftertreatment device 10, the magma buffer tank links to each other with comdenstion water aftertreatment device 10 through going out the water pump, and the evaporation effluent is squeezed into comdenstion water aftertreatment device 10 after passing through the magma buffer tank buffering and is handled. Condensate water processing unit up to standard still is including setting gradually regulation water pitcher 7, pre-heater 8, the integration circulation heater 9 between degasser 3, MVR evaporation crystallization device 4, still be connected with MVR vapor compressor 11 between MVR evaporation crystallization device 4 and the integration circulation heater 9, still be connected with condensate water pitcher 12 between integration circulation heater 9 and the pre-heater 8, pre-heater 8 passes through condensate water after-treatment device 10 and links to each other with regulation water pitcher 7, and the evaporation effluent of evaporating system unit gets into condensate water after-treatment device 10 after passing through the magma buffer tank buffering, and reverse osmosis system produces water and discharges up to standard, and reverse osmosis concentrate gets back to regulation water pitcher 7 and evaporates again.
Furthermore, the outlet water of the adjusting buffer tank 1 is connected with a coarse filter through a pipeline and a pump to remove suspended matters contained in raw water, the outlet water of the coarse filter is delivered to the pretreatment unit, the water outlet end of the coarse filter is connected with the pH value adjusting tank 2, and the outlet water of the coarse filter automatically flows into the pH value adjusting tank 2. The water inlet end of the pH value adjusting tank 2 is connected with the water outlet end of the adjusting buffer pool 1, the tank bottom of the pH value adjusting tank 2 is connected with a water outlet pump, the pH value adjusting tank 2 is connected with a degasifier 3 through the water outlet pump, and the water outlet pump pumps the percolate with the adjusted pH value into the degasifier 3. The pH value adjusting tank 2 is connected with an acid adding device, a defoaming agent adding device and an alkali adding device, and the pH value adjusting tank 2 controls the pH value within the range of 1-13 in the leachate treatment process.
Further, the integrated circulation heater 9 is one of a forced circulation type, a rising film type, a plate heating type, and a natural circulation type heater. A steam washing device or a demister device is also arranged between the MVR evaporation crystallization device 4 and the MVR vapor compressor 11. The process equipment covered by the condensed water post-treatment device 10 for the condensed water post-treatment configured in the process system comprises system equipment capable of removing ammonia nitrogen and COD, such as an RO membrane concentration system, an ion exchange system, an advanced oxidation system and the like.
The utility model discloses the working process:
the utility model relates to a landfill leachate discharge to reach standard high-efficiency processing system's theory of operation: pumping raw water into a regulating buffer tank through a pipeline and a water pump; the effluent of the regulating buffer tank is pumped to a coarse filter through a pipeline and a pump to remove suspended matters possibly contained; and then the filter effluent is delivered to a pretreatment reaction system, the filter effluent is automatically delivered to a pH value adjusting tank, acid is added into the pH value adjusting tank to adjust the pH value, a water outlet pump is connected to the tank bottom after reaction, the percolate with the adjusted pH value is pumped into a degasifier through the water outlet pump, and then the percolate directly enters an evaporation system. A pH value control point in the pretreatment process;
the effluent of the degasser is pumped to a raw water buffer tank of the MVR evaporation crystallization device through a pipeline and a water pump; the water outlet of the raw water buffer tank is connected to the MVR evaporation main body device through a pipeline and a pump. The MVR evaporation crystallization device discharges materials and is pumped into a crystal mush buffer tank through a discharging pump, the crystal mush buffer tank discharges the materials to a dehydrator, waste salt is discharged outside, mother liquor flows into a mother liquor tank and then flows back to an evaporation crystallization main body device through a mother liquor pump, and partial concentrated solution is discharged to a landfill or is burnt. The system aims at the treatment of the landfill leachate, the whole flow is simplified, the operation is stable, and the system is energy-saving and environment-friendly.
The evaporimeter goes out water and generally can not reach landfill leachate effluent discharge standard, need reduce COD and ammonia nitrogen and handle, the utility model discloses a reverse osmosis membrane system device, the evaporation goes out the water and through the buffer tank buffering back, squeezes into reverse osmosis RO membrane system with the delivery pump and handles, and reverse osmosis system produces water discharge to reach standard, and reverse osmosis concentrate gets back to the surge tank before the evaporation system and evaporates again. The designed recovery rate of the system reaches 85% -95%.
The above-mentioned embodiment is right the utility model discloses an explanation, it is not right the utility model discloses a limited, any right the scheme after the simple transform of the utility model all belongs to the protection scope of the utility model.
Claims (9)
1. The utility model provides a landfill leachate discharge to reach standard high-efficient processing system which characterized in that: including pretreatment unit, evaporation system unit and comdenstion water processing unit up to standard, pretreatment unit's the end of intaking links to each other with the play water end of adjusting buffer pool (1), and the raw water is squeezed into to adjusting buffer pool (1) through pipeline and water pump, pretreatment unit includes pH value adjusting tank (2) and degasser (3) that set gradually along the processing direction, the play water end of degasser (3) links to each other with evaporation system unit, evaporation system unit includes MVR evaporation crystallization device (4), hydroextractor (5) and mother liquor that set gradually along the processing direction and irritates (6), the play water end of degasser (3) is connected to the raw water buffer tank of MVR evaporation crystallization device (4) through pipeline and water pump, the play water end of raw water buffer tank is connected to the MVR evaporation main part device of MVR evaporation crystallization device (4) through pipeline and pump, the ejection of compact of MVR evaporation main part device is squeezed into the magma buffer tank through the discharge pump, the discharge end of magma buffer tank links to each other with hydroextractor (5), the backflow pipeline that the mother liquor irritated (6) links to each other with MVR evaporation subject device through the mother liquor pump, be connected with comdenstion water processing unit up to standard between pretreatment unit and the evaporation system unit, comdenstion water processing unit up to standard is equipped with comdenstion water aftertreatment device (10), the magma buffer tank links to each other with comdenstion water aftertreatment device (10) through a water outlet pump, and the evaporation goes out to squeeze into comdenstion water aftertreatment device (10) after passing through the magma buffer tank buffering and handles.
2. The system of claim 1, wherein the landfill leachate discharge-reaching high efficiency treatment system comprises: condensate water processing unit up to standard still is including setting gradually regulation water pitcher (7), pre-heater (8), integration circulation heater (9) between degasser (3), MVR evaporation crystallization device (4), still be connected with MVR vapor compressor (11) between MVR evaporation crystallization device (4) and integration circulation heater (9), still be connected with condensate water pitcher (12) between integration circulation heater (9) and pre-heater (8), pre-heater (8) link to each other with regulation water pitcher (7) through comdenstion water aftertreatment device (10), and the evaporation play water of evaporating system unit gets into comdenstion water aftertreatment device (10) after passing through the crystal thick liquid buffer tank buffering, and reverse osmosis system produces water and discharges up to standard, and reverse osmosis concentrate gets back to and adjusts water pitcher (7) and evaporate again.
3. The system of claim 1, wherein the landfill leachate discharge-reaching high efficiency treatment system comprises: the water outlet of the adjusting buffer tank (1) is connected with a coarse filter through a pipeline and a pump to remove suspended matters contained in raw water, the water outlet of the coarse filter is connected with a pretreatment unit, the water outlet end of the coarse filter is connected with a pH value adjusting tank (2), and the water outlet of the coarse filter automatically flows into the pH value adjusting tank (2).
4. The system of claim 1, wherein the landfill leachate discharge-reaching high efficiency treatment system comprises: the water inlet end of the pH value adjusting tank (2) is connected with the water outlet end of the adjusting buffer pool (1), the tank bottom of the pH value adjusting tank (2) is connected with a water outlet pump, the pH value adjusting tank (2) is connected with a degasifier (3) through the water outlet pump, and the water outlet pump pumps the percolate with the adjusted pH value into the degasifier (3).
5. The landfill leachate discharge-reaching high-efficiency treatment system of any one of claims 2-4, wherein: and the pH value adjusting tank (2) is connected with an acid adding device, a defoaming agent adding device and an alkali adding device.
6. The system of claim 1, wherein the landfill leachate discharge-reaching high efficiency treatment system comprises: the discharge end of magma buffer tank links to each other with hydroextractor (5), and the blowing is to hydroextractor (5), and the waste salt is discharged outward, and the mother liquor pours into mother liquor and irritates (6) and flows back MVR evaporation subject device through the mother liquor pump, and partial concentrate is discharged and is gone to the landfill yard or burn.
7. The system of claim 2, wherein the landfill leachate discharge-reaching high efficiency treatment system comprises: the integrated circulating heater (9) is one of a forced circulation type heater, a film lifting type heater, a plate heating type heater and a natural circulation type heater.
8. The system of claim 1, wherein the landfill leachate discharge-reaching high efficiency treatment system comprises: and a steam washing device or a demister device is also arranged between the MVR evaporation crystallization device (4) and the MVR steam compressor (11).
9. The system of claim 1, wherein the landfill leachate discharge-reaching high efficiency treatment system comprises: the condensed water post-treatment device (10) is a system device capable of removing ammonia nitrogen and COD, and comprises one or more of an RO membrane concentration system, an ion exchange system and an advanced oxidation system.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109896686A (en) * | 2019-04-23 | 2019-06-18 | 惠纯科技(浙江)有限公司 | A kind of landfill leachate qualified discharge efficient process system |
| CN111777251A (en) * | 2020-07-03 | 2020-10-16 | 大连理工大学 | Percolate and dry garbage cooperative full-quantification treatment process system and working method thereof |
-
2019
- 2019-04-23 CN CN201920564334.XU patent/CN210117309U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109896686A (en) * | 2019-04-23 | 2019-06-18 | 惠纯科技(浙江)有限公司 | A kind of landfill leachate qualified discharge efficient process system |
| CN111777251A (en) * | 2020-07-03 | 2020-10-16 | 大连理工大学 | Percolate and dry garbage cooperative full-quantification treatment process system and working method thereof |
| CN111777251B (en) * | 2020-07-03 | 2024-01-09 | 大连理工大学 | Leachate and dry garbage collaborative full-quantization treatment process system and working method thereof |
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