CN218810984U - Improved full-film treatment equipment for leachate in landfill - Google Patents
Improved full-film treatment equipment for leachate in landfill Download PDFInfo
- Publication number
- CN218810984U CN218810984U CN202222106387.1U CN202222106387U CN218810984U CN 218810984 U CN218810984 U CN 218810984U CN 202222106387 U CN202222106387 U CN 202222106387U CN 218810984 U CN218810984 U CN 218810984U
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- China
- Prior art keywords
- reverse osmosis
- unit
- membrane
- module
- depth treatment
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- 238000001223 reverse osmosis Methods 0.000 claims abstract description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 38
- 239000012528 membrane Substances 0.000 claims abstract description 34
- 239000000149 chemical water pollutant Substances 0.000 claims abstract description 8
- 239000002253 acid Substances 0.000 claims description 7
- 239000002455 scale inhibitor Substances 0.000 claims description 6
- 150000003839 salts Chemical class 0.000 abstract description 8
- 239000003344 environmental pollutant Substances 0.000 abstract description 6
- 231100000719 pollutant Toxicity 0.000 abstract description 6
- 239000003864 humus Substances 0.000 abstract description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 8
- 239000012141 concentrate Substances 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 239000010791 domestic waste Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910017464 nitrogen compound Inorganic materials 0.000 description 1
- 150000002830 nitrogen compounds Chemical class 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000010129 solution processing Methods 0.000 description 1
- 239000011550 stock solution Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention provides improved landfill leachate full-membrane treatment equipment which comprises a front-section pretreatment module and a depth treatment module, wherein the front-section pretreatment module and the depth treatment module are sequentially connected in front and back, the front-section pretreatment module comprises a first-stage coiled membrane pretreatment unit and a low interception rate coiled reverse osmosis unit for removing suspended matters, divalent salts and humus, water produced by the low interception rate coiled reverse osmosis unit enters the depth treatment module, the depth treatment module is a two-stage disc-tube reverse osmosis unit, most pollutants are intercepted in concentrated solution by the depth treatment module after the two-stage disc-tube reverse osmosis depth treatment, and clear water is discharged after reaching standards.
Description
Technical Field
The utility model relates to an improvement landfill leachate membrane treatment facility entirely for handle high concentration, high salinity landfill leachate, belong to domestic waste sanitary landfill leachate treatment field.
Background
Along with the increasing of the landfill age of the domestic garbage landfill, garbage leachate is continuously changed, the concentration of pollutants such as nitrogen compounds, refractory organic matters and salt content is continuously increased, the difficulty of leachate treatment is continuously increased, the existing traditional full-film leachate treatment equipment and process cannot be matched with the requirement of high-concentration garbage leachate water quality treatment, so that leachate cannot be treated in time and is stored in a domestic garbage sanitary landfill reservoir area and a leachate adjusting tank, and when the leachate storage reaches the upper design limit, the risk of leachate leakage exists.
Disclosure of Invention
In order to solve the technical problem, the utility model provides an improvement landfill leachate membrane treatment facility entirely, the purpose can be to high concentration landfill leachate treatment technology in order to provide one kind for handle high pollutant, high salinity filtration liquid, when especially the conductivity is higher than 35000-40000 us/cm.
The utility model provides a pair of whole membrane treatment facility of improvement landfill leachate, anterior segment preliminary treatment module and the advanced treatment module that connects gradually around including, anterior segment preliminary treatment module is including the one-level book membrane pretreatment unit and the book formula reverse osmosis unit of low interception rate that connect gradually, the one-level book membrane pretreatment unit includes filter unit, acidification unit, adds antisludging agent unit, the book formula reverse osmosis unit of low interception rate adopts the low interception rate reverse osmosis membrane of large aperture, for the core module of front end preliminary treatment module for get rid of most suspended solids, partial divalent salt and partial humus, book formula reverse osmosis unit product water gets into advanced treatment module, advanced treatment module is two-stage dish tubular reverse osmosis unit, and after two-stage dish tubular reverse osmosis advanced treatment, a large amount of pollutants are held back by advanced treatment module, and the clear water is up to standard to be discharged. The device of the invention has the following characteristics:
1. front-section pretreatment module-first-stage film rolling pretreatment: in the percolate, there is inevitably a certain amount of suspended matter or grit, etc., which is removed by the filter. The pH value of the leachate changes with the increase of the plant age and the change of various conditions such as environment, the composition of the leachate is complex, various calcium, magnesium, barium, silicon and other indissolvable salts exist, the indissolvable inorganic salts are concentrated by high times after entering a reverse osmosis system, and when the concentration of the indissolvable inorganic salts exceeds the solubility under the conditions, the scaling phenomenon can be generated on the surface of the membrane. The scale formation of carbonate inorganic salt can be effectively prevented by adjusting the pH value of the raw water, and the scale formation of silica scale and sulfate can be prevented by adding a certain amount of scale inhibitor. Therefore, the invention designs a filter unit, an acid adding unit and a scale inhibitor adding unit as a pretreatment unit of the primary rolling film. The filter is characterized in that two specifications of 20 and 10 mu m are selected according to requirements.
2. Front-end pretreatment module-low rejection rate roll-type reverse osmosis: the pollution frequency of reverse osmosis is closely related to the interception capability of the reverse osmosis, and for high-salt and high-degradation-resistance organic percolate, after a reverse osmosis membrane with high interception rate is directly fed into a stock solution in an all-membrane system, the pollution frequency is high, the reverse osmosis membrane is difficult to clean, and the membrane flux is seriously reduced. The invention adopts the roll-type reverse osmosis membrane with low interception rate as a pretreatment measure of the membrane with high interception rate, reduces the pressure of the water quality of the water inlet of the advanced treatment module, reduces the frequency of membrane pollution and ensures the performance of the membrane. The method is characterized in that the rejection rate of the reverse osmosis membrane with low interception rate reaches 40-50%, the SS removal rate reaches 99%, and the removal rate of organic matters reaches 30-50%.
3. Advanced treatment module-two-stage disc-tube reverse osmosis: the pH value of the rolled reverse osmosis produced water is adjusted again, the water enters the two-stage disc tube type reverse osmosis after being pressurized by the water inlet pump, and residual pollutants in the water are removed by depending on the high interception performance of the two-stage disc tube type reverse osmosis, and the water contains organic matters, salt and the like. The core component of the disc-tube type reverse osmosis unit is a disc-tube type reverse osmosis membrane component, and the characteristic value is that the rejection rate of pollutants is more than 95%, the recovery rate is controlled between 70% and 75%, and the effluent reaches the standard and is discharged, and can also be recycled as reclaimed water.
Drawings
Fig. 1 is a full membrane treatment equipment for leachate of an improved landfill according to the utility model.
In FIG. 1: 1: and (3) adjusting the pool 2: a lift pump 3: and (4) a filter: the raw water tank 5: acid adding unit 6: raw water circulating pump 7: and (3) a filter 8: scale inhibitor adding unit 9: low shut-off rate roll-to-roll reverse osmosis apparatus 10: the first-level water production tank 11: acid addition circulating pump 12: a water inlet pump 13: two-stage disc-tube reverse osmosis unit 14: the clean water tank 15: clean water discharge pump 16: concentrated solution processing system
Detailed Description
As shown in the figure:
in the pretreatment section, the percolate in the regulating tank 1 enters a filter 3 through a lifting pump 2 and then enters a raw water tank 4. Hydrochloric acid is added into a raw water tank 4 through an acid adding unit 5, and the raw water is uniformly stirred by a raw water circulating pump 6. The percolate with the SS removed and the pH adjusted enters a filter 7 (on a rack of an integrated and rolled reverse osmosis device 9), a scale inhibitor is added through a scale inhibitor adding unit 8 to prevent the scaling phenomenon of silica scale and sulfate, the effluent enters a rolled reverse osmosis device 9 with low rejection rate, the produced water enters a first-stage water production tank 10, so that the SS99% removal, the salt removal of 40-50% and the organic matter removal of 50-70% are completed, and the water inlet quality pressure of an advanced treatment section is reduced. The concentrate goes to a concentrate treatment system 16.
Hydrochloric acid is added into a first-stage water production tank 10 through an acid adding unit 5, the hydrochloric acid is circularly stirred uniformly through an acid adding circulating pump 11, the pH value is further adjusted, then the hydrochloric acid is pressurized and enters a two-stage disc-tube type reverse osmosis unit 13 through a water inlet pump 12 (integrated on a frame of the disc-tube type reverse osmosis unit 13), the in-unit percolate directly enters a first-stage high-pressure plunger pump, and a shock absorber is arranged behind each plunger pump of the disc-tube type reverse osmosis membrane system and used for absorbing pressure pulses generated by the high-pressure pump and providing stable pressure for a reverse osmosis membrane column. The effluent water after passing through the high-pressure pump enters an online pump or a membrane column. Because the flow of the first-stage high-pressure pump is not enough to directly supply water to the membrane column, a part of concentrated solution at the outlet of the membrane column flows back to the inlet of the online pump through the online pump so as to ensure the sufficient flow and flow velocity on the surface of the membrane and avoid membrane pollution. The high pressure and high flow water flowing out of the on-line pump directly enters the membrane column. The water output of the membrane column assembly is divided into two parts: concentrate and permeate. The concentrate end has a pressure regulating valve for controlling the pressure within the membrane module to produce the necessary clean water recovery. The permeate is discharged or further treated. The concentrate is returned to the front end or discharged to the concentrate treatment system 16. The high-pressure pump is provided with variable frequency control, the first-level and the second-level high-pressure pumps automatically match flow, and the operation of the second-level system is not influenced by the water yield of the first-level system through self-compensation of concentrated liquid. The water produced by the two-stage disc tube type reverse osmosis unit 13 enters the clean water tank 14, and is discharged after reaching the standard through the clean water discharge pump 15.
Claims (1)
1. The utility model provides an improvement landfill leachate membrane treatment facility entirely which characterized in that: the equipment comprises a front section pretreatment module and a depth treatment module which are sequentially connected, wherein the front section pretreatment module comprises a first-stage rolled membrane pretreatment unit and a low interception rate rolled reverse osmosis unit which are sequentially connected, the first-stage rolled membrane pretreatment unit comprises a filter unit, an acid adding unit and a scale inhibitor adding unit, the low interception rate rolled reverse osmosis unit adopts a low interception rate reverse osmosis membrane, the produced water of the low interception rate rolled reverse osmosis unit enters the depth treatment module, and the depth treatment module is a two-stage disc-tube reverse osmosis unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222106387.1U CN218810984U (en) | 2022-08-05 | 2022-08-05 | Improved full-film treatment equipment for leachate in landfill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222106387.1U CN218810984U (en) | 2022-08-05 | 2022-08-05 | Improved full-film treatment equipment for leachate in landfill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218810984U true CN218810984U (en) | 2023-04-07 |
Family
ID=87269679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222106387.1U Active CN218810984U (en) | 2022-08-05 | 2022-08-05 | Improved full-film treatment equipment for leachate in landfill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218810984U (en) |
-
2022
- 2022-08-05 CN CN202222106387.1U patent/CN218810984U/en active Active
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