CN110642429A - Landfill leachate treatment system - Google Patents
Landfill leachate treatment system Download PDFInfo
- Publication number
- CN110642429A CN110642429A CN201911052752.1A CN201911052752A CN110642429A CN 110642429 A CN110642429 A CN 110642429A CN 201911052752 A CN201911052752 A CN 201911052752A CN 110642429 A CN110642429 A CN 110642429A
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- CN
- China
- Prior art keywords
- reverse osmosis
- storage tank
- landfill leachate
- treatment system
- tank
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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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
- C02F1/20—Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
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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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/06—Contaminated groundwater or leachate
Abstract
The embodiment of the invention discloses a landfill leachate treatment system, which relates to the technical field of water purification and comprises a regulating tank, a filtering device, a leachate storage tank, a reverse osmosis device, a degassing device, a clean water tank and a concentrated solution storage tank; the regulating tank is connected with the filtering device, the filtering device is connected with the percolate storage tank, the percolate storage tank is connected with the reverse osmosis device, the reverse osmosis device is respectively connected with the degassing device and the concentrated solution storage tank, and the degassing device is connected with the clean water tank; the purified water produced by the reverse osmosis device is transported to the degasser, and the concentrated solution produced by the reverse osmosis device is transported to the concentrated solution storage tank, so that the landfill leachate can be purified, and the pollution to the natural environment caused by the direct discharge of the landfill leachate to the natural environment is avoided.
Description
Technical Field
The invention relates to the technical field of water purification, in particular to a landfill leachate treatment system.
Background
Urban garbage is a great problem in urban environment management. Landfill leachate from refuse terminals, incineration sites or landfills is produced from various compounds and decaying substances and contains very high concentrations of BOD (Biochemical Oxygen Demand), COD (Chemical Oxygen Demand), nitrogen compounds, phosphorus compounds, organic halides, sulfides and inorganic salts. Landfill leachate not only has a foul smell, but also is a carcinogen in many cases. If the waste water is discharged to the ground surface, the environment is polluted, the waste water is dissolved into the ground, and the water source is polluted, so that the waste water becomes a great harm to the urban environment and the human health. And the longer the landfill time is, the higher the concentration of leachate is, and the greater the damage is. Therefore, how to purify the landfill leachate becomes a technical problem which needs to be solved urgently by technical personnel in the field.
Disclosure of Invention
The technical problem to be solved by the embodiment of the invention is how to purify the landfill leachate.
In order to solve the above problems, an embodiment of the present invention provides a landfill leachate treatment system, where the landfill leachate treatment system includes a regulating tank, a filtering device, a leachate storage tank, a reverse osmosis device, a degasser, a clean water tank, and a concentrated solution storage tank; the regulating tank is connected with the filtering device, the filtering device is connected with the percolate storage tank, the percolate storage tank is connected with the reverse osmosis device, the reverse osmosis device is respectively connected with the degassing device and the concentrated solution storage tank, and the degassing device is connected with the clean water tank; and the purified water generated by the reverse osmosis device is transported to the degassing device, and the concentrated solution generated by the reverse osmosis device is transported to the concentrated solution storage pool.
The technical scheme is that a lifting pump is arranged in the adjusting tank and connected with the filtering device, and the lifting pump is used for transporting the landfill leachate in the adjusting tank to the filtering device.
The further technical scheme is that the filtering device comprises a sand filter, and the sand filter is connected with the lifting pump.
The filter device further comprises a cylinder filter, and the cylinder filter is respectively connected with the sand filter and the percolate storage tank.
The technical scheme is that the landfill leachate treatment system further comprises an acid adding device, and the acid adding device is connected with the leachate storage tank and used for adding acid into the leachate storage tank.
The technical scheme is that the reverse osmosis device comprises a first high-pressure plunger pump and a first-stage reverse osmosis unit, the first high-pressure plunger pump is connected with the percolate storage tank, and the first-stage reverse osmosis unit is connected with the first high-pressure plunger pump.
The reverse osmosis device further comprises a second high-pressure plunger pump and a second-stage reverse osmosis unit, wherein the second high-pressure plunger pump is connected with the first-stage reverse osmosis unit, and the second-stage reverse osmosis unit is connected with the second high-pressure plunger pump.
The further technical proposal is that the secondary reverse osmosis unit is connected with the primary reverse osmosis unit.
The further technical proposal is that the first-stage reverse osmosis unit is connected with the concentrated solution storage pool.
The further technical proposal is that the secondary reverse osmosis unit is connected with the degasser.
The embodiment of the invention provides a landfill leachate treatment system, which comprises a regulating tank, a filtering device, a leachate storage tank, a reverse osmosis device, a degassing device, a clean water tank and a concentrated solution storage tank, wherein the regulating tank is connected with the filtering device; the regulating tank is connected with the filtering device, the filtering device is connected with the percolate storage tank, the percolate storage tank is connected with the reverse osmosis device, the reverse osmosis device is respectively connected with the degassing device and the concentrated solution storage tank, and the degassing device is connected with the clean water tank; the purified water produced by the reverse osmosis device is transported to the degasser, and the concentrated solution produced by the reverse osmosis device is transported to the concentrated solution storage tank, so that the landfill leachate can be purified, and the pollution to the natural environment caused by the direct discharge of the landfill leachate to the natural environment is avoided.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a landfill leachate treatment system according to an embodiment of the present invention.
Reference numerals
A conditioning tank 10, a filtration device 20, a percolate storage tank 30, a reverse osmosis device 40, a degasser 50, a clean water tank 60, a concentrate storage tank 70, a lift pump 80, an acid addition device 90, a sand filter 21, a cartridge filter 22, a first high pressure plunger pump 41, a primary reverse osmosis unit 42, a second high pressure plunger pump 43, and a secondary reverse osmosis unit 44.
Detailed Description
The technical solutions in the embodiments will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, wherein like reference numerals represent like elements in the drawings. It is apparent that the embodiments to be described below are only a part of the embodiments of the present invention, and not all of them. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the embodiments of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the embodiments of the invention. As used in the description of embodiments of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
Referring to fig. 1, the embodiment of the present invention provides a landfill leachate treatment system, which includes a conditioning tank 10, a filtering apparatus 20, a leachate storage tank 30, a reverse osmosis apparatus 40, a degasser 50, a clean water tank 60, and a concentrate storage tank 70.
The adjusting tank 10 is connected with the filtering device 20, the filtering device 20 is connected with the percolate storage tank 30, the percolate storage tank 30 is connected with the reverse osmosis device 40, the reverse osmosis device 40 is respectively connected with the degassing device 50 and the concentrated solution storage tank 70, and the degassing device 50 is connected with the clean water tank 60; wherein the purified water produced by the reverse osmosis device 40 is transported to the degasser 50, and the concentrated solution produced by the reverse osmosis device 40 is transported to the concentrated solution storage tank 70.
The adjusting tank 10 is used for adjusting the water quantity and the water quality of the landfill leachate, adjusting the pH value and the water temperature of sewage, has a pre-aeration effect, and can also be used for accident drainage.
And the filtering device 20 is used for filtering solid suspended matters in the landfill leachate.
And the leachate storage tank 30 is used for storing the filtered landfill leachate.
And the reverse osmosis device 40 is used for purifying the landfill leachate.
And a degasifier 50 for removing odor from the purified water generated from the reverse osmosis apparatus 40.
And a clean water tank 60 for storing clean water.
And a concentrated solution storage tank 70 for storing the concentrated solution generated by the reverse osmosis device 40.
When the landfill leachate treatment system is operated, the landfill leachate is lifted by the lift pump 80 to enter the filtering device 20 after the water quality and the water quantity are adjusted by the adjusting tank 10, and the filtering device 20 removes solid impurities in the landfill leachate and then enters the leachate storage tank 30. When the liquid level in the leachate storage tank 30 reaches a set height, the reverse osmosis unit 40 operates, and after the landfill leachate reaches a set recovery rate, the reverse osmosis unit 40 discharges the concentrate to the concentrate storage tank 70. The purified water produced by the reverse osmosis device 40 is deodorized by the degasser 50 and then is conveyed to the clean water tank 60 for direct discharge or reuse.
Further, a lift pump 80 is arranged in the adjusting tank 10, the lift pump 80 is connected with the filtering device 20, and the lift pump 80 is used for transporting the landfill leachate in the adjusting tank 10 to the filtering device 20.
Further, the filtering device 20 includes a sand filter 21, and the sand filter 21 is connected to the lift pump 80. The sand filter 21 is used for filtering solid suspended substances with the particle size of more than 50 mu m in the landfill leachate.
Further, the filtering device 20 further comprises a cartridge filter 22, and the cartridge filter 22 is connected to the sand filter 21 and the percolate storage tank 30 respectively. The cartridge filter 22 is used for filtering solid suspended substances with the particle size of more than 10 mu m in the landfill leachate.
Further, the landfill leachate treatment system further comprises an acid adding device 90, wherein the acid adding device 90 is connected with the leachate storage tank 30 and is used for adding acid into the leachate storage tank 30 so as to adjust the pH value of landfill leachate in the leachate storage tank 30 to 6-6.5.
Further, the reverse osmosis apparatus 40 comprises a first high pressure plunger pump 41 and a primary reverse osmosis unit 42, the first high pressure plunger pump 41 is connected with the percolate storage tank 30, and the primary reverse osmosis unit 42 is connected with the first high pressure plunger pump 41. A first high pressure plunger pump 41 pumps the landfill leachate to the membrane module system of the primary reverse osmosis unit 42.
Further, the reverse osmosis device 40 further comprises a second high-pressure plunger pump 43 and a second-stage reverse osmosis unit 44, wherein the second high-pressure plunger pump 43 is connected with the first-stage reverse osmosis unit 42, and the second-stage reverse osmosis unit 44 is connected with the second high-pressure plunger pump 43. The low concentration water produced by the primary reverse osmosis unit 42 is pumped by the second high pressure plunger pump 43 into the membrane module system of the secondary reverse osmosis unit 44 for re-purification.
Further, the secondary reverse osmosis unit 44 is connected to the primary reverse osmosis unit 42. The concentrate produced by the secondary reverse osmosis unit 44 is again sent to the primary reverse osmosis unit 42 for purification to increase water recovery.
Further, the primary reverse osmosis unit 42 is connected to the concentrate storage tank 70. The concentrate produced by the primary reverse osmosis unit 42 is delivered to a concentrate storage tank 70.
Further, the secondary reverse osmosis unit 44 is connected to the degasser 50. The purified water produced by the secondary reverse osmosis unit 44 is sent to the degasser 50 to remove gases and then to a clean water reservoir 60.
The embodiment of the invention provides a landfill leachate treatment system, which comprises a regulating tank, a filtering device, a leachate storage tank, a reverse osmosis device, a degassing device, a clean water tank and a concentrated solution storage tank, wherein the regulating tank is connected with the filtering device; the regulating tank is connected with the filtering device, the filtering device is connected with the percolate storage tank, the percolate storage tank is connected with the reverse osmosis device, the reverse osmosis device is respectively connected with the degassing device and the concentrated solution storage tank, and the degassing device is connected with the clean water tank; the purified water produced by the reverse osmosis device is transported to the degasser, and the concentrated solution produced by the reverse osmosis device is transported to the concentrated solution storage tank, so that the landfill leachate can be purified, and the pollution to the natural environment caused by the direct discharge of the landfill leachate to the natural environment is avoided.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, while the invention has been described with respect to the above-described embodiments, it will be understood that the invention is not limited thereto but may be embodied with various modifications and changes.
While the invention has been described with reference to specific embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A landfill leachate treatment system is characterized by comprising an adjusting tank, a filtering device, a leachate storage tank, a reverse osmosis device, a degassing device, a clean water tank and a concentrated solution storage tank; the regulating tank is connected with the filtering device, the filtering device is connected with the percolate storage tank, the percolate storage tank is connected with the reverse osmosis device, the reverse osmosis device is respectively connected with the degassing device and the concentrated solution storage tank, and the degassing device is connected with the clean water tank; and the purified water generated by the reverse osmosis device is transported to the degassing device, and the concentrated solution generated by the reverse osmosis device is transported to the concentrated solution storage pool.
2. The landfill leachate treatment system of claim 1, wherein a lift pump is disposed in the conditioning tank, the lift pump is connected to the filtration device, and the lift pump is configured to transport the landfill leachate in the conditioning tank to the filtration device.
3. The landfill leachate treatment system of claim 2, wherein the filtration device comprises a sand filter, the sand filter being connected to the lift pump.
4. The landfill leachate treatment system of claim 3, wherein the filtration device further comprises a cartridge filter, the cartridge filter being connected to the sand filter and the leachate storage tank, respectively.
5. The landfill leachate treatment system of claim 4, further comprising an acid addition device connected to the leachate storage tank for adding acid into the leachate storage tank.
6. The landfill leachate treatment system of claim 5, wherein the reverse osmosis unit comprises a first high pressure plunger pump connected to the leachate storage tank and a primary reverse osmosis unit connected to the first high pressure plunger pump.
7. The landfill leachate treatment system of claim 6, wherein the reverse osmosis unit further comprises a second high pressure plunger pump and a secondary reverse osmosis unit, the second high pressure plunger pump being connected to the primary reverse osmosis unit, the secondary reverse osmosis unit being connected to the second high pressure plunger pump.
8. The landfill leachate treatment system of claim 7, wherein the secondary reverse osmosis unit is connected to the primary reverse osmosis unit.
9. The landfill leachate treatment system of claim 8, wherein the primary reverse osmosis unit is connected to the concentrate storage tank.
10. The landfill leachate treatment system of claim 9, wherein the secondary reverse osmosis unit is connected to the degasser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911052752.1A CN110642429A (en) | 2019-10-31 | 2019-10-31 | Landfill leachate treatment system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911052752.1A CN110642429A (en) | 2019-10-31 | 2019-10-31 | Landfill leachate treatment system |
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| CN110642429A true CN110642429A (en) | 2020-01-03 |
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| CN201911052752.1A Pending CN110642429A (en) | 2019-10-31 | 2019-10-31 | Landfill leachate treatment system |
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| CN204752404U (en) * | 2015-06-02 | 2015-11-11 | 武汉沃特尔环保工程建设有限公司 | Portable landfill leachate processing apparatus |
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| CN211004886U (en) * | 2019-10-31 | 2020-07-14 | 深圳恒通源环保科技有限公司 | Landfill leachate treatment system |
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2019
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Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2878362Y (en) * | 2006-02-07 | 2007-03-14 | 北京天地人环保科技有限公司 | Device for processing garbage percolation liquid by disk-pipe type reverse osmosis technology |
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