CN107500441A - A kind of landfill leachate thick water processing system and processing method - Google Patents
A kind of landfill leachate thick water processing system and processing method Download PDFInfo
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- CN107500441A CN107500441A CN201710952950.8A CN201710952950A CN107500441A CN 107500441 A CN107500441 A CN 107500441A CN 201710952950 A CN201710952950 A CN 201710952950A CN 107500441 A CN107500441 A CN 107500441A
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- water
- reverse osmosis
- nanofiltration
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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
-
- 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
-
- 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
- C02F1/442—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by nanofiltration
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
-
- 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
- C02F2001/007—Processes including a sedimentation step
-
- 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 present invention relates to a kind of landfill leachate thick water processing system and processing method, including nano-filtration unit, reverse osmosis units, nanofiltration concentrate pond, soften tank, flocculation basin, sedimentation basin, buffer pond and device for catalyzing and oxidating ozone, described nano-filtration unit has three outlet pipelines, reverse osmosis units have two outlet pipelines, three outlet pipelines of nano-filtration unit inlet pipeline with nanofiltration concentrate pond respectively, the inlet pipeline of reverse osmosis units connects with reverse osmosis units outlet pipeline, described nanofiltration concentrate pond, soften tank, flocculation basin, sedimentation basin, buffering pond and device for catalyzing and oxidating ozone are sequentially communicated, another outlet pipeline of the reverse osmosis units connects with the outlet pipeline of sedimentation basin.The present invention has：Concentrated water yield reduction, processing requirement is low, the advantages such as operating cost is low, can be applied to percolate nanofiltration, reverse osmosis concentrated water process, can also be applied to the nanofiltration of the higher sewage treatment plant of processing requirement, reverse osmosis concentrated water process.
Description
Technical field
The present invention relates to sewage treatment area, refers in particular to a kind of landfill leachate thick water processing system and processing method.
Background technology
Contain contents of many kinds of heavy metal ion in percolate, salinity is high, colourity is deep, foul smelling, and ammonia-nitrogen content is high, C/N ratios
Example (carbon-nitrogen ratio) imbalance, P elements lack, and wastewater biodegradability is poor, and factors above is brought quite to the processing of percolate
Big difficulty, while also under cover huge environmental risk.
The most techniques using " biochemical treatment+film process " of the processing to percolate various at present, to sewage
COD（COD）, ammonia nitrogen, total nitrogen and heavy metal have higher clearance, it can be ensured that standard water discharge is discharged.But should
Technique exist one it is obvious the defects of --- concentrated water yield is high, and fouling membrane can be then caused if reducing the yield of concentrated water.
In practice, to reduce the pollution of film, then the way for reducing clear water yield is taken, this causes the yield of concentrated water very big.Film
Processing simply realizes the separation of pollutant and water, does not decompose hardly degraded organic substance and is disposed from environment, at film
Concentrate caused by reason is a kind of environmental hazard waste.Because the COD and content of beary metal of concentrated water are exceeded serious, therefore can not will be dense
Water directly discharges.Existing way is to landfill yard by concentrated water recharge, but COD pollutants and heavy metal is caused the drawbacks of the way
In the internal system circulative accumulation of landfill yard；Also have and concentrated water caused by the dense percolate processing of rubbish is evaporated processing, still
Energy consumption is big, and processing cost is too high.Fenton oxidation method is also used, but sludge output is too high, easily returns color, hardly possible control and corrosivity
Greatly.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of landfill leachate thick water processing system and processing method, going out
Under the premise of water emission compliance, the ratio that nanofiltration production water flow to reverse osmosis unit is reduced, concentrated water is reduced and produces；By flocculation sediment and
Ozone oxidation, the high price fouling tendency ion in concentrated water is removed, hardly degraded organic substance is converted into degradable small organic molecule；It is dense
The regulating reservoir of sewage disposal system front end is finally back to after water process, reduces concentrated water intractability.
In order to solve the above-mentioned technical problem, the technical scheme is that：Including nano-filtration unit, reverse osmosis units, nanofiltration
Concentrating liquid pool, softening tank, flocculation basin, sedimentation basin, buffering pond and device for catalyzing and oxidating ozone, described nano-filtration unit have three
Outlet pipeline, reverse osmosis units have two outlet pipelines, three outlet pipelines of nano-filtration unit respectively with nanofiltration concentrate pond
Inlet pipeline, the inlet pipeline of reverse osmosis units connect with an outlet pipeline of reverse osmosis units, described nanofiltration concentrate
Pond, softening tank, flocculation basin, sedimentation basin, buffering pond and device for catalyzing and oxidating ozone be sequentially communicated, the reverse osmosis units it is another
One outlet pipeline connects with the outlet pipeline of sedimentation basin.
Further, described device for catalyzing and oxidating ozone includes being sequentially connected apparatus of oxygen supply, ozone generator and urge
Oxidation device, described catalyst oxidation reactor top connection sedimentation basin outlet pipeline and reverse osmosis units outlet pipeline,
Bottom connects ozone generator, and an ozone tail gas destructor is provided with the top of described catalyst oxidation reactor.
Further, the nano-filtration unit includes nanofiltration device and nanofiltration production water pot, and nanofiltration device has two outlet pipes
Road, connected respectively with the inlet pipeline of nanofiltration production water pot and the inlet pipeline in nanofiltration concentrate pond, reverse osmosis units include reverse osmosis
Saturating device and reverse osmosis produced water pot, reverse osmosis unit have two outlet pipelines, respectively with the inlet pipeline of reverse osmosis produced water pot
Connected with the outlet pipeline of sedimentation basin, nanofiltration production water pot has two outlet pipelines, respectively with the water inlet of reverse osmosis unit
Pipeline is connected with the outlet pipeline of reverse osmosis produced water pot, and valve is provided with the connecting pipeline of nanofiltration production water pot and reverse osmosis unit
And water pump.
Further, it is provided with the outlet pipeline in the nanofiltration concentrate pond, flocculation basin, sedimentation basin and buffered water pond
Valve and water pump.
A kind of landfill leachate thick water processing method, comprises the following steps：
Step 1：Landfill leachate thick water enters nanofiltration device, and processing obtains nanofiltration production water and nanofiltration concentrated water；
Step 2：A part of nanofiltration production water enters reverse osmosis unit, and processing obtains reverse osmosis produced water and reverse osmosis concentrated water, another portion
Nanofiltration is divided to produce Chinese effluent after water mixes with reverse osmosis produced water；
Step 3：Nanofiltration concentrated water caused by nanofiltration device flow to nanofiltration concentrate pond, softening tank and flocculation basin successively, softens in tank
Liquid caustic soda has been added, the materials such as fouling tendency ion and colloid is converted into solid flocculent substance, flocculant has been added in flocculation basin, it is right
Solution carries out flocculation sediment；
Step 4：Concentrated water after flocculation basin processing is entered water-filling into sedimentation basin and separated admittedly, and its precipitation is discharged into sludge-tank, its water outlet and
Reverse osmosis concentrated water caused by reverse osmosis unit is mixed into buffering pond；
Step 5：The production water for buffering pond enters device for catalyzing and oxidating ozone progress catalytic oxidation, and wherein difficult degradation is organic
Thing is converted into degradable small organic molecule, and partial organic substances are directly carbonized, the effluent recycling of device for catalyzing and oxidating ozone
To the regulating reservoir of sewage disposal system front end.
Further, the water quality of water is produced according to nanofiltration, the nanofiltration production water of regulation 0 ~ 100% is received by reverse osmosis unit, residue
Chinese effluent after filter production water mixes with reverse osmosis produced water pot water outlet.
Compared with prior art, a kind of landfill leachate thick water processing system and processing method of the present invention, it has
There is concentrated water yield reduction, processing requirement is low, the advantages such as operating cost is low, can be applied to percolate nanofiltration, reverse osmosis concentrated water
Processing, can also be applied to the nanofiltration of the higher sewage treatment plant of processing requirement, reverse osmosis concentrated water process.
Brief description of the drawings
The embodiment of the present invention is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 is landfill leachate thick water processing system schematic diagram of the present invention；
In figure：1- nanofiltration devices, 2- nanofiltrations production water pot, 3- reverse osmosis units, the reverse osmosis produced water pots of 4-, 5- nanofiltration concentrates pond,
6- softens tank, 7- flocculation basins, 8- sedimentation basins, 9- bufferings pond, 10- device for catalyzing and oxidating ozone.
Embodiment
With reference to the accompanying drawings and detailed description, the present invention will be further described.
As shown in figure 1, a kind of landfill leachate thick water processing system, including nanofiltration device 1, reverse osmosis unit 3, nanofiltration are dense
Contracting liquid pool 5, softening tank 6, flocculation basin 7, sedimentation basin 8, buffering pond 9 and device for catalyzing and oxidating ozone 10, the nanofiltration device 1
One outlet pipeline is provided with nanofiltration production water pot 2, and an outlet pipeline of reverse osmosis unit 3 is provided with a reverse osmosis produced water pot
4, the outlet pipeline of nanofiltration production water pot 2 connects with the inlet pipeline of reverse osmosis unit 3 and the outlet pipeline of reverse osmosis produced water pot 4
It is logical, nanofiltration production water pot 2 with being provided with valve and water pump on the connecting pipeline of reverse osmosis unit 3, the nanofiltration device 1 another
Outlet pipeline connects with the inlet pipeline in nanofiltration concentrate pond 5, the nanofiltration concentrate pond 5, softening tank 6, flocculation basin 7, precipitation
Pond 8, buffering pond 9 and device for catalyzing and oxidating ozone 10 be sequentially communicated, another outlet pipeline of described reverse osmosis unit 3 with
The outlet pipeline connection of sedimentation basin 8.
In the present embodiment, described device for catalyzing and oxidating ozone 10 includes apparatus of oxygen supply, the ozone generator being sequentially connected
And catalyst oxidation reactor, the described catalyst oxidation reactor top connection outlet pipeline of sedimentation basin 8 and the water outlet of reverse osmosis unit 3
Pipeline, bottom connection ozone generator, described catalyst oxidation reactor top is provided with an ozone tail gas destructor.
In the present embodiment, the nanofiltration concentrate pond 5, flocculation basin, sedimentation basin 8 and buffered water pond 9 outlet pipeline on
It is provided with valve and water pump.
A kind of landfill leachate thick water processing method, comprises the following steps：
Step 1：Landfill leachate thick water enters nanofiltration device 1, and processing obtains nanofiltration production water and nanofiltration concentrated water；
Step 2：A part of nanofiltration production water enters reverse osmosis unit 3, and the water quality of water, the nanofiltration production of regulation 0 ~ 100% are produced according to nanofiltration
Water obtains reverse osmosis produced water and reverse osmosis concentrated water, another part nanofiltration by reverse osmosis unit 3 into the processing of reverse osmosis unit 3
Chinese effluent after production water mixes with reverse osmosis produced water, in this way, reducing on the premise of qualified discharge is met caused by counter-infiltration
Concentrated water；
Step 3：Nanofiltration concentrated water caused by nanofiltration device 1 flow to nanofiltration concentrate pond 5, softening tank 6 and flocculation basin 7, softening successively
Liquid caustic soda has been added in tank 6, the materials such as fouling tendency ion and colloid is converted into solid flocculent substance, wadding has been added in flocculation basin 7
Solidifying agent, flocculation sediment is carried out to solution；
Step 4：Concentrated water after the processing of flocculation basin 7 is entered water-filling into sedimentation basin 8 and separated admittedly, and its precipitation is discharged into sludge-tank, its water outlet
With reverse osmosis unit 3 caused by reverse osmosis concentrated water be mixed into buffering pond 9；
Step 5：The production water for buffering pond 9 enters device for catalyzing and oxidating ozone 10 and carries out catalytic oxidation, through catalysis oxidation, its
The organic matter of middle difficult degradation is converted into degradable small organic molecule, and partial organic substances are directly carbonized, catalytic ozonation
The effluent recycling of device 10 is back to regulating reservoir, the salinity of concentrated water after water correction to the regulating reservoir of sewage disposal system front end
Reduce, biodegradability improves, and has so both saved the subsequent treatment of concentrated water, and do not influence the operation of sewage disposal system.
Although specifically showing and describing the present invention with reference to preferred embodiment, those skilled in the art should be bright
In vain, do not departing from the spirit and scope of the present invention that appended claims are limited, in the form and details to this hair
It is bright to make a variety of changes, it is protection scope of the present invention.
Claims (6)
- A kind of 1. landfill leachate thick water processing system, it is characterised in that：Including nano-filtration unit, reverse osmosis units, nanofiltration concentration Liquid pool, softening tank, flocculation basin, sedimentation basin, buffering pond and device for catalyzing and oxidating ozone, described nano-filtration unit have three water outlets Pipeline, reverse osmosis units have two outlet pipelines, three outlet pipelines water inlet with nanofiltration concentrate pond respectively of nano-filtration unit Pipeline, the inlet pipeline of reverse osmosis units connect with an outlet pipeline of reverse osmosis units, described nanofiltration concentrate pond, soft Change tank, flocculation basin, sedimentation basin, buffering pond and device for catalyzing and oxidating ozone be sequentially communicated, the reverse osmosis units another Outlet pipeline connects with the outlet pipeline of sedimentation basin.
- A kind of 2. landfill leachate thick water processing system according to claim 1, it is characterised in that：Described ozone catalytic Oxidation unit includes apparatus of oxygen supply, ozone generator and the catalyst oxidation reactor being sequentially connected, described catalytic oxidation Device top connects sedimentation basin outlet pipeline and reverse osmosis units outlet pipeline, bottom connection ozone generator, described catalysis oxygen Change reactor head and be provided with an ozone tail gas destructor.
- A kind of 3. landfill leachate thick water processing system according to claim 1 or 2, it is characterised in that：The nanofiltration list Member includes nanofiltration device and nanofiltration production water pot, and nanofiltration device has two outlet pipelines, produces the water inlet pipe of water pot with nanofiltration respectively Road connects with the inlet pipeline in nanofiltration concentrate pond, and reverse osmosis units include reverse osmosis unit and reverse osmosis produced water pot, counter-infiltration Device has two outlet pipelines, is connected respectively with the inlet pipeline of reverse osmosis produced water pot and the outlet pipeline of sedimentation basin, described Nanofiltration production water pot there are two outlet pipelines, respectively with the inlet pipeline of reverse osmosis unit and the outlet pipeline of reverse osmosis produced water pot Valve and water pump are provided with the connecting pipeline of connection, nanofiltration production water pot and reverse osmosis unit.
- A kind of 4. landfill leachate thick water processing system according to claim 1, it is characterised in that：The nanofiltration concentrate Pond, flocculation basin, sedimentation basin and buffered water pond outlet pipeline on be provided with valve and water pump.
- 5. a kind of landfill leachate thick water processing method, it is characterised in that comprise the following steps：Step 1：Landfill leachate thick water enters nanofiltration device, and processing obtains nanofiltration production water and nanofiltration concentrated water；Step 2：A part of nanofiltration production water enters reverse osmosis unit, and processing obtains reverse osmosis produced water and reverse osmosis concentrated water, another portion Nanofiltration is divided to produce Chinese effluent after water mixes with reverse osmosis produced water；Step 3：Nanofiltration concentrated water caused by nanofiltration device flow to nanofiltration concentrate pond, softening tank and flocculation basin successively, softens in tank Liquid caustic soda has been added, the materials such as fouling tendency ion and colloid is converted into solid flocculent substance, flocculant has been added in flocculation basin, it is right Solution carries out flocculation sediment；Step 4：Concentrated water after flocculation basin processing is entered water-filling into sedimentation basin and separated admittedly, and its precipitation is discharged into sludge-tank, its water outlet and Reverse osmosis concentrated water caused by reverse osmosis unit is mixed into buffering pond；Step 5：The production water for buffering pond enters device for catalyzing and oxidating ozone progress catalytic oxidation, and wherein difficult degradation is organic Thing is converted into degradable small organic molecule, and partial organic substances are directly carbonized, the effluent recycling of device for catalyzing and oxidating ozone To the regulating reservoir of sewage disposal system front end.
- A kind of 6. landfill leachate thick water processing method according to claim 5, it is characterised in that：Water is produced according to nanofiltration Water quality, the nanofiltration production water of regulation 0 ~ 100% is by reverse osmosis unit, after remaining nanofiltration production water mixes with reverse osmosis produced water pot water outlet Chinese effluent.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108773930A (en) * | 2018-06-15 | 2018-11-09 | 贵州永合益环保科技有限公司 | A kind of purification method of landfill leachate |
| CN109626714A (en) * | 2018-12-06 | 2019-04-16 | 江苏维尔利环保科技股份有限公司 | The film filtration concentrated processing method of landfill leachate nanofiltration concentrate second level minimizing |
| CN109970275A (en) * | 2019-04-05 | 2019-07-05 | 杭州司迈特水处理工程有限公司 | A kind of reverse osmosis thick water treatment method of landfill leachate |
| CN110304789A (en) * | 2019-06-12 | 2019-10-08 | 北京洁绿环境科技股份有限公司 | A kind of processing system and its processing method of the nanofiltration concentrate that landfill leachate treatment generates |
| CN111252967A (en) * | 2020-02-24 | 2020-06-09 | 鹭滨环保科技（上海）股份有限公司 | Treatment system and treatment method for membrane filtration concentrated solution of landfill leachate |
| CN113880293A (en) * | 2021-09-18 | 2022-01-04 | 安徽普朗膜技术有限公司 | Alkali reduction wastewater treatment method and treatment system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108773930A (en) * | 2018-06-15 | 2018-11-09 | 贵州永合益环保科技有限公司 | A kind of purification method of landfill leachate |
| CN109626714A (en) * | 2018-12-06 | 2019-04-16 | 江苏维尔利环保科技股份有限公司 | The film filtration concentrated processing method of landfill leachate nanofiltration concentrate second level minimizing |
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| CN110304789A (en) * | 2019-06-12 | 2019-10-08 | 北京洁绿环境科技股份有限公司 | A kind of processing system and its processing method of the nanofiltration concentrate that landfill leachate treatment generates |
| CN111252967A (en) * | 2020-02-24 | 2020-06-09 | 鹭滨环保科技（上海）股份有限公司 | Treatment system and treatment method for membrane filtration concentrated solution of landfill leachate |
| CN113880293A (en) * | 2021-09-18 | 2022-01-04 | 安徽普朗膜技术有限公司 | Alkali reduction wastewater treatment method and treatment system |
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