CN203021366U - Landfill leachate concentrating and treating device - Google Patents
Landfill leachate concentrating and treating device Download PDFInfo
- Publication number
- CN203021366U CN203021366U CN 201220721367 CN201220721367U CN203021366U CN 203021366 U CN203021366 U CN 203021366U CN 201220721367 CN201220721367 CN 201220721367 CN 201220721367 U CN201220721367 U CN 201220721367U CN 203021366 U CN203021366 U CN 203021366U
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- nanofiltration membrane
- membrane system
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- water outlet
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- 239000000149 chemical water pollutant Substances 0.000 title claims abstract description 16
- 239000012528 membrane Substances 0.000 claims abstract description 95
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 92
- 238000001728 nano-filtration Methods 0.000 claims abstract description 80
- 239000007788 liquid Substances 0.000 claims abstract description 23
- 238000004140 cleaning Methods 0.000 claims description 10
- 239000002253 acid Substances 0.000 claims description 4
- 230000000844 anti-bacterial effect Effects 0.000 claims description 4
- 239000003899 bactericide agent Substances 0.000 claims description 4
- 239000003638 chemical reducing agent Substances 0.000 claims description 4
- 230000001590 oxidative effect Effects 0.000 claims description 4
- 239000002455 scale inhibitor Substances 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 claims description 2
- 238000007599 discharging Methods 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 238000011084 recovery Methods 0.000 description 11
- 238000000034 method Methods 0.000 description 7
- 239000012141 concentrate Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000001471 micro-filtration Methods 0.000 description 4
- 238000001223 reverse osmosis Methods 0.000 description 4
- 238000000108 ultra-filtration Methods 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000007726 management method Methods 0.000 description 2
- 238000005374 membrane filtration Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010612 desalination reaction Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The utility model discloses a landfill leachate concentrating and treating device. The landfill leachate concentrating and treating device is characterized in that a raw water inlet pipeline is connected with the water inlet of a first-section nanofiltration membrane system sequentially through a pipeline mixture, a security filter and a high-pressure pump; the water inlet of a concentrated liquid inlet pipeline is connected with the concentrated water outlet of the first-section nanofiltration membrane system, the concentrated water outlet of a second-section nanofiltration membrane system and the concentrated water outlet of the third-section nanofiltration membrane system; the water outlet of the concentrated liquid inlet pipeline and the water outlet of the high-pressure pump are connected with the water inlet of the second-section nanofiltration membrane system through a second-section circulating booster pump; the water outlet of the concentrated liquid inlet pipeline and the water outlet of the high-pressure pump are connected with the water inlet of the third-section nanofiltration membrane system through a third-section circulating booster pump; and the concentrated water outlet of the third-section nanofiltration membrane system is connected with a concentrated liquid discharging pipeline. The landfill leachate concentrating and treating device has the advantages that the effluent quality of landfill leachate is stable and reliable through optimizing treatment of the pipelines and mixed circular treatment of concentrated water and raw water, running is stable and easy to operate, and the automatic control degree is high.
Description
Technical Field
The utility model relates to a concentrated processing apparatus especially relates to a landfill leachate concentrated processing apparatus.
Background
In the landfill leachate treatment process, the mainstream treatment process at home and abroad is microbial treatment and membrane filtration. Wherein the membrane filtration technology comprises microfiltration, ultrafiltration, nanofiltration and reverse osmosis technology. With the implementation of the pollution control standard (GB16889-2008) of the household garbage landfill, the effluent discharge index requirement is stricter. The biochemical treatment and the microfiltration treatment and the biochemical treatment and the ultrafiltration treatment are simply carried out, and because the micro-filtration and the ultrafiltration membrane have larger pore diameters, a large amount of organic substances permeate the micro-filtration and the ultrafiltration membrane, so that the effluent can hardly reach the new pollutant control standard.
The nanofiltration membrane treatment technology mainly removes solute particles with the diameter of about 1 nanometer (nm), the molecular weight cutoff is 100-1000, organic matters can be effectively removed, the cutoff solubility salt can be 20-98%, the chromaticity can be removed, and impurities can be cut off. The reverse osmosis treatment technology can intercept soluble salts and organic substances with molecular weight of 100, and is mainly good in desalination effect, but due to the fact that the pressure is high in the operation process, the membrane aperture is smaller than that of a nanofiltration membrane, pollution and blockage are easy to occur, and the recovery rate is low. The transmembrane pressure difference required by NF membrane separation is generally 0.5-1.5 MPa, which is 0.5-2.5 MPa lower than the pressure difference required by a reverse osmosis membrane to achieve the same permeation energy. Under the same external pressure, when the nanofiltration is used for replacing the reverse osmosis, the concentration process is more effectively and rapidly carried out, and a larger concentration multiple is achieved.
The nanofiltration membrane applied to the landfill leachate concentration device at present has the form of one-stage concentration or multi-stage concentration, and the recovery rate of the one-stage concentration is not high, and is often difficult to reach 60%; while the multi-stage concentration generally has a design recovery rate of 75%, the pipeline system is not optimized in time and has no design concept deviation, so that the stable operation is difficult; the recovery rate is gradually reduced in a period of concentration time in general operation, and the yield of the concentrated solution is high; the yield of the new membrane concentrate within a half year of use is 30-40% of the membrane water inflow, and the yield of the membrane concentrate within a half year of use is about 50% of the membrane water inflow, and the yield increases as the membrane use time increases.
Therefore, with the implementation of the pollution control standard (GB16889-2008) of the household garbage landfill, the requirement of effluent discharge indexes is stricter, and the problem that how to improve the recovery rate of the nanofiltration system and reduce the accumulation and reasonable operation cost in the back-spraying process is urgently needed to be solved is to reduce the generation of concentrated solution.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a landfill leachate concentrated treatment device, can improve and receive the system rate of recovery of straining and reduce to return and spout process accumulation and reasonable working costs to solve the present low and high problem of process working costs of returning of system rate of recovery of receiving to strain.
The technical scheme for solving the technical problems is as follows:
the utility model provides a landfill leachate concentrated treatment device, include:
the device comprises a raw water inlet pipeline, a pipeline mixer, a security filter, a high-pressure pump, a first-stage nanofiltration membrane system, a concentrated solution inlet pipeline, a second-stage circulating booster pump, a second-stage nanofiltration membrane system, a third-stage circulating booster pump, a third-stage nanofiltration membrane system and a concentrated solution discharge pipeline; wherein,
the raw water inlet pipeline is connected with the water inlet of the section of the nanofiltration membrane system through the pipeline mixer, the security filter and the high-pressure pump in sequence;
the water inlet of the concentrated liquid water inlet pipeline is connected with the concentrated water outlet of the first-stage nanofiltration membrane system, the concentrated water outlet of the second-stage nanofiltration membrane system and the concentrated water outlet of the third-stage nanofiltration membrane system;
the water outlet of the concentrated solution water inlet pipeline and the water outlet of the high-pressure pump are connected with the water inlet of the second-stage nanofiltration membrane system through the second-stage circulating booster pump;
the water outlet of the concentrated solution water inlet pipeline and the water outlet of the high-pressure pump are connected with the water inlet of the three-section nanofiltration membrane system through the three-section circulating booster pump;
and a concentrated water outlet of the three-section nanofiltration membrane system is connected with the condensed liquid discharge pipeline.
The utility model discloses a landfill leachate concentrated treatment device, one section is received and is strained membrane system, two-stage section is received and is strained membrane system and three-section and receive the circulation connected mode of membrane system and raw water supply end, can realize the segmentation backward flow, thereby make the device's rate of recovery improve greatly, can the steady operation rate of recovery 80%, and wash the number of times few, the longe-lived of membrane, the management is convenient, and is economical and reasonable, the automatic control nature is strong, the whole equipment integrated level is high, the compactness has been increased, the occupation space has been saved, and the outer row's of concentrate pipeline lug connection is on three-section receives the membrane system concentrate delivery port, the incomplete drawback of flushing film has been overcome, the pollution of the.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of a landfill leachate concentration treatment apparatus provided by an embodiment of the present invention;
fig. 2 is a front view of an embodiment of the present invention;
fig. 3 is a top view of an embodiment of the present invention;
fig. 4 is a left side view of an embodiment of the present invention;
the corresponding names of the labels in the figure are respectively:
the device comprises a water inlet pipeline 1, a pipeline 2, a pipeline mixer 3, a cartridge filter 4, a high-pressure pump 5, a first-stage nanofiltration membrane system 6, a concentrated solution water inlet pipeline 6, a two-stage circulating booster pump 7, a two-stage nanofiltration membrane system 8, a three-stage circulating booster pump 9, a three-stage nanofiltration membrane system 10, a concentrated solution discharge pipeline 11, a cleaning pipeline 12 and a controller 13.
Detailed Description
The technical solutions in the embodiments of the present invention are described below clearly and completely, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiment of the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The embodiment of the utility model provides a landfill leachate concentrated treatment device, include: the device comprises a raw water inlet pipeline 1, a pipeline mixer 2, a security filter 3, a high-pressure pump 4, a first-stage nanofiltration membrane system 5, a concentrated solution inlet pipeline 6, a second-stage circulating booster pump 7, a second-stage nanofiltration membrane system 8, a third-stage circulating booster pump 9, a third-stage nanofiltration membrane system 10 and a concentrated solution discharge pipeline 11;
wherein, a raw water inlet pipeline 1 for introducing MBR effluent is connected with a water inlet of the first-stage nanofiltration membrane system 5 through the pipeline mixer 2, the cartridge filter 3 and the high-pressure pump 4 in sequence;
the water inlet of the concentrated solution water inlet pipeline 6 is connected with the concentrated water outlet of the first-stage nanofiltration membrane system 5, the concentrated water outlet of the second-stage nanofiltration membrane system 8 and the concentrated water outlet of the third-stage nanofiltration membrane system 10, the concentrated solution water of the third-stage nanofiltration membrane system is fully mixed, and the balanced concentrated solution enters the salt content of the second and third stages.
The water outlet of the concentrated solution inlet pipeline 6 and the water outlet of the high-pressure pump 4 are connected with the water inlet of a second-stage nanofiltration membrane system 8 through a second-stage circulating booster pump 7; the connection mode is convenient for the mixed concentrated solution and part of the raw water of the first-stage nanofiltration membrane system 5, the second-stage nanofiltration membrane treatment system 8 and the third-stage nanofiltration membrane treatment system 10 to enter the second-stage nanofiltration membrane system 8 through the second-stage circulating booster pump 7 for circulating treatment;
the water outlet of the concentrated solution water inlet pipeline 6 and the water outlet of the high-pressure pump 4 are connected with the water inlet of a three-section nanofiltration membrane system 10 through a three-section circulating booster pump 9; the connection mode is convenient for the mixed concentrated solution and part of the raw water of the two-section nanofiltration membrane system, the one-section nanofiltration membrane treatment system and the three-section nanofiltration membrane treatment system to enter the three-section nanofiltration membrane system 10 for circular treatment through the three-section circulating booster pump 9;
and a concentrated water outlet of the three-section nanofiltration membrane system 10 is connected with a condensed liquid discharge pipeline 11.
In the treatment device, a medicine adding port for adding the scale inhibitor, the acid liquid, the reducing agent and the non-oxidative bactericide is arranged on the pipeline mixer 2. Can conveniently add scale inhibitor, acid liquor, reducing agent, non-oxidative bactericide and the like into the pipeline mixer.
In the treatment device, a stainless steel pipeline is adopted as a pipeline for connecting the high-pressure pump 4 and the water inlet of the first nanofiltration membrane system 5. Can avoid the corrosion of the pipeline caused by the introduction of raw water.
In the treatment device, a check valve and a control valve are arranged on a pipeline connecting a concentrated water outlet of the three-section nanofiltration membrane system and a condensed liquid discharge pipeline. The control of the concentrated solution discharged from the three-section nanofiltration membrane system is convenient.
The processing device comprises: an inlet of the cleaning pipeline 12 is connected with the concentrated solution water inlet pipeline 6, and an outlet of the cleaning pipeline is connected with a concentrated water outlet of the first-stage nanofiltration membrane system 5, a concentrated water outlet of the second-stage nanofiltration membrane system 8 and a concentrated water outlet of the third-stage nanofiltration membrane system 10, and is provided with a control valve. The cleaning of each pipeline is convenient, and the cleaning can be performed in sections or integrally.
The above processing apparatus further includes: and the controller 13 is electrically connected with the cartridge filter, the high-pressure pump, the two-section circulating booster pump and the three-section circulating booster pump and is used for controlling the working state of each device. The automatic control of the processing device can be realized through the controller.
The first, second and third sections of nanofiltration membrane systems in the treatment device can adopt the existing nanofiltration membrane treatment system.
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1-4, the high-efficiency concentration treatment device for landfill leachate of the present invention is formed by sequentially connecting a raw water inlet pipeline 1, a pipeline mixer 2, a security filter 3, a high pressure pump 4, a first-stage nanofiltration membrane system 5, a concentrated solution inlet pipeline 6, a second-stage circulation booster pump 7, a second-stage nanofiltration membrane system 8, a third-stage circulation booster pump 9, a third-stage nanofiltration membrane system 10, a concentrated solution discharge pipeline 11 and a cleaning pipeline 12 by a pipeline and a valve;
MBR produced water is mixed with raw water, a scale inhibitor, acid liquor, a reducing agent and a non-oxidative bactericide through a raw water inlet pipeline 1 and a pipeline mixer 2, the mixed liquid is filtered to remove impurities through a cartridge filter 3 with a filter element of 5 mu m, the mixed liquid is pressurized and lifted to a first-stage nanofiltration membrane system 5 through a high-pressure pump 4, the concentrated liquid outlet of the first-stage nanofiltration membrane system 5 is mixed with the concentrated liquid outlet of a second-stage nanofiltration membrane system 8, the concentrated liquid outlet of a third-stage nanofiltration membrane system 10, part of the raw water is lifted to the second-stage nanofiltration membrane system 8 through a second-stage circulating booster pump 7, the concentrated liquid outlet of the second-stage nanofiltration membrane system is mixed with the concentrated liquid outlet of the first-stage nanofiltration membrane system 5, the concentrated liquid outlet of the third-stage nanofiltration membrane system 10, part of.
The recovery rate of the device system is greatly improved through the sectional backflow, the recovery rate can be stably operated by 80%, the cleaning times are few, the service life of the membrane is long, the management is convenient, the device is economical and reasonable, the automatic control performance is high, the whole set of equipment is integrated, the compactness of the equipment is increased, and the occupied space is saved. The concentrated solution discharge pipeline and accessories are directly connected to the concentrated solution outlet pipeline of the third nanofiltration membrane system, so that the defect of incomplete flushing membrane is overcome, the membrane pollution is reduced, and the operation efficiency is improved.
The automatic control system comprises a starting washing device, a quick washing device, a stopping washing device, an electric valve control device, a high-low pressure switch, a water tank liquid level and water inlet pump interlocking control device, an equipment dosing system, a differential pressure gauge and a final PLC control system control device for automatic operation.
The above description is only for the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are all covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. The utility model provides a landfill leachate concentrated treatment device which characterized in that includes:
the device comprises a raw water inlet pipeline, a pipeline mixer, a security filter, a high-pressure pump, a first-stage nanofiltration membrane system, a concentrated solution inlet pipeline, a second-stage circulating booster pump, a second-stage nanofiltration membrane system, a third-stage circulating booster pump, a third-stage nanofiltration membrane system and a concentrated solution discharge pipeline; wherein,
the raw water inlet pipeline is connected with the water inlet of the section of the nanofiltration membrane system through the pipeline mixer, the security filter and the high-pressure pump in sequence;
the water inlet of the concentrated liquid water inlet pipeline is connected with the concentrated water outlet of the first-stage nanofiltration membrane system, the concentrated water outlet of the second-stage nanofiltration membrane system and the concentrated water outlet of the third-stage nanofiltration membrane system;
the water outlet of the concentrated solution water inlet pipeline and the water outlet of the high-pressure pump are connected with the water inlet of the second-stage nanofiltration membrane system through the second-stage circulating booster pump;
the water outlet of the concentrated solution water inlet pipeline and the water outlet of the high-pressure pump are connected with the water inlet of the three-section nanofiltration membrane system through the three-section circulating booster pump;
and a concentrated water outlet of the three-section nanofiltration membrane system is connected with the condensed liquid discharge pipeline.
2. The apparatus as claimed in claim 1, wherein the line mixer is provided with a dosing port for adding the scale inhibitor, the acid solution, the reducing agent and the non-oxidative bactericide.
3. The apparatus of claim 1, wherein the pipeline connecting the high pressure pump and the water inlet of the section of the nanofiltration membrane system is a stainless steel pipeline.
4. The device according to claim 1, wherein a check valve and a control valve are arranged on a pipeline connecting a concentrated water outlet of the three-section nanofiltration membrane system and the condensed liquid discharge pipeline.
5. The apparatus of claim 1, further comprising: the inlet of the cleaning pipeline is connected with a concentrated liquid inlet pipeline, the outlet of the cleaning pipeline is connected with the concentrated water outlet of the first-stage nanofiltration membrane system, the concentrated water outlet of the second-stage nanofiltration membrane system, the concentrated water outlet of the third-stage nanofiltration membrane system and the concentrated liquid outlet pipeline, and a control valve is arranged on the outlet of the cleaning pipeline.
6. The device of claim 1, wherein the cartridge of the cartridge filter is 5 μm.
7. The apparatus of any one of claims 1 to 5, further comprising: and the controller is used for being connected with the cartridge filter, the high-pressure pump, the two-section circulating booster pump and the three-section circulating booster pump and controlling the working state of each device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220721367 CN203021366U (en) | 2012-12-24 | 2012-12-24 | Landfill leachate concentrating and treating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220721367 CN203021366U (en) | 2012-12-24 | 2012-12-24 | Landfill leachate concentrating and treating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203021366U true CN203021366U (en) | 2013-06-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220721367 Expired - Fee Related CN203021366U (en) | 2012-12-24 | 2012-12-24 | Landfill leachate concentrating and treating device |
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| Country | Link |
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| CN (1) | CN203021366U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104496079A (en) * | 2014-12-23 | 2015-04-08 | 北京桑德环境工程有限公司 | Treatment method for garbage leachate membrane concentrated solution |
-
2012
- 2012-12-24 CN CN 201220721367 patent/CN203021366U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104496079A (en) * | 2014-12-23 | 2015-04-08 | 北京桑德环境工程有限公司 | Treatment method for garbage leachate membrane concentrated solution |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130626 Termination date: 20161224 |