CN103663834A - Treating method for landfill leachate - Google Patents
Treating method for landfill leachate Download PDFInfo
- Publication number
- CN103663834A CN103663834A CN201310649716.XA CN201310649716A CN103663834A CN 103663834 A CN103663834 A CN 103663834A CN 201310649716 A CN201310649716 A CN 201310649716A CN 103663834 A CN103663834 A CN 103663834A
- Authority
- CN
- China
- Prior art keywords
- percolate
- leachate
- treatment
- water
- refuse
- Prior art date
- 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.)
- Pending
Links
Images
Abstract
The invention relates to a treating method for landfill leachate. The method comprises the following steps: introducing landfill leachate into a regulating tank, carrying out uniform mixing and adjusting the quality and quantity of water; then adding a coagulant into the leachate for coagulating sedimentation and filtration so as to remove metal ions, SS and a part of organic matters in the leachate; introducing the treated leachate into an MVC evaporation plant for evaporation so as to remove the majority of COD, BOD and pollutants like ammonia nitrogen, metal ions and TDS in the leachate; and introducing the treated leachate into an electrolytic bath for oxidation so as to remove a small amount of residual ammonia nitrogen and COD in condensed water and discharging effluent reaching the standard. The treating method provided by the invention has the advantages of strong adaptive capability to changes of water quality, high resistance to impact load, a short treatment cycle, high treating efficiency, a small occupied land area, a high degree of automation, low cost, a good removal effect on ammonia nitrogen, COD, heavy metal ions, TDS and chroma, a clearance rate of more than 95% and capacity of allowing effluent quality to meet national discharge standards in China.
Description
Technical field
The present invention relates to a kind of method for the treatment of refuse percolate.
Background technology
Percolate refer to rubbish stack and landfill process in owing to fermenting and the drip washing of rainwater, washing away, and the immersion of surface water and the black brown liquid that oozes out from refuse landfill.It is the high concentrated organic wastewater that a kind of composition is very complicated, water quality and quantity changes greatly, the harm time length is long, is to produce one of principal element of secondary pollution in garbage loading embeading process.In general, percolate pH between 4～9, COD
cRin the scope of 2000～62000mg/L, BOD
5in the scope of 60～45000mg/L.
Percolate is because pollution load is very high, and intractability is larger, not only will consider to process validity and the stability of engineering, also needs to consider the economic rationality of technique.At present, the treatment process of percolate mainly contains biological treatment, materialization processing and land disposal method, but mostly has following problem:
(1) be suitable for the ability of change of water quality, particularly adapt to the ability of change of water quality of whole landfill phase of landfill yard.Due to the prolongation of landfill percolate water quality with the landfill time, BOD
5/ COD
cRon a declining curve, there will be initial landfill stage system operational excellence, and there is the unconformable situation of system in stage.
(2) can not meet the secondary standard requirement in China (GB16889-1997).Conventional biological treatment water outlet COD
cRgenerally, at 500～1200mg/L, therefore must after original processing, increase deep treatment method.
High concentration organic contaminant and recalcitrant substance and ammonia nitrogen in high density, cause technical process long, and structures are many, complex management, and floor space is large, and working cost is high, and water outlet COD
cRbe difficult for up to standard with ammonia nitrogen.
Summary of the invention
In order to overcome the deficiencies in the prior art, the invention provides a kind of method for the treatment of refuse percolate.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of method for the treatment of refuse percolate, the method comprises the steps:
(1) first percolate is passed into equalizing tank and mix, the regulating water quality water yield;
(2) in percolate, add PAC (polymerize aluminum chloride) and PAM (polyacrylamide) to carry out coagulating sedimentation and filtration, remove metal ion, SS and partial organic substances in percolate;
(3) then the percolate after processing is passed into and in MVC device, carry out the processing of less energy-consumption mechanical steam compression evaporating, after processing, dope is back to before equalizing tank, after mixing with percolate water inlet, enter equalizing tank, discharge or reuse after absorption column of gas absorbs of the waste gas that mechanical vapour compression (MVC) evaporation produces; Can remove like this pollutents such as COD, BOD most in percolate and ammonia nitrogen, metal ion, TDS;
(4) water of condensation MVC evaporation unit being produced passes into electrolyzer, regulate required electric current, the voltage of electrolytic reaction, make positive plate brine electrolysis produce HO or strong oxidizer, residual a small amount of ammonia nitrogen and COD in water of condensation after energy oxidation removal MVC art breading like this, water outlet qualified discharge.
Beneficial effect: the novel method that the invention provides a kind for the treatment of refuse percolate.Present method treating refuse percolate, adapt to change of water quality ability strong, anti impulsion load is high, and treatment cycle is short, and processing efficiency is high, floor space is little, level of automation is high, and cost is lower, good to the removal effect of ammonia nitrogen, COD, heavy metal ion, TDS, colourity, clearance all can reach more than 95%, and effluent characteristics meets discharging standards.
Accompanying drawing explanation
Fig. 1 is process flow sheet of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further described.
Embodiment 1: as shown in Figure 1, a kind of method for the treatment of refuse percolate, its technical process comprises the following steps:
(1) water quality regulation
Percolate is passed into equalizing tank, impeller whipping device is installed in equalizing tank, by stirring, percolate is mixed, can regulate like this water quality and quantity of percolate, improve the capacity of resisting impact load of subsequent treatment process.The water quality, the water yield that by equalizing tank, guarantee to enter subsequent disposal unit are basicly stable, alleviate water quality, the impact of the water yield to subsequent disposal unit.
(2) coagulation and filtration
The percolate mixing in step (1) is delivered in micro-filtration membrane cisterna, in percolate, adds PAC (polymerize aluminum chloride) and PAM (polyacrylamide) to carry out coagulating sedimentation and filtration, remove metal ion, SS and partial organic substances.Coagulating agent PAC dosage is 650mg/L, and PAM dosage is 18mg/L.Filter and adopt suction filtration mode, adopt microfiltration membrane in suction filtration, described microfiltration membrane adopts mesopore tunica fibrosa, mould material is PVDF(polyvinylidene difluoride (PVDF)), aperture 0.2 μ m, the spoil disposal water that coagulating sedimentation and filtration produce, landfill disposal after thickening, membrane filtration water enters MVC evaporation unit.
(3) MVC evaporation
Percolate after coagulation and filtration being processed by MVC evaporation unit carries out the processing of less energy-consumption mechanical steam compression evaporating, remove the pollutents such as COD, BOD most in percolate and ammonia nitrogen, metal ion, after processing, dope volume is about 8% of percolate volume, after processing, dope is back to before equalizing tank, water of condensation continues to pass into and in electrolyzer, carries out electrolytic oxidation processing, discharge or reuse after absorption column of gas absorbs of the waste gas that MVC evaporation produces.
(4) electrolysis
The water of condensation that MVC evaporation unit is produced passes into electrolyzer, regulates required electric current, the voltage of electrolytic reaction, makes positive plate brine electrolysis generation HO or strong oxidizer (as CLO
-deng), residual a small amount of ammonia nitrogen and COD in further oxidation removal water of condensation, water outlet qualified discharge.Wherein during electrolysis, current density 50mA/cm
2, voltage 8V, positive plate adopts RuO
2-IrO
2-TiO
2/ Ti material, negative plate adopts stainless material.
Adopt the result after the present invention: percolate is treated, and COD clearance can reach 96.1%, BOD clearance can reach 96.3%, and ammonia nitrogen removal frank can reach 95.6%.
Embodiment 2: substantially the same manner as Example 1, difference is: in step (2), coagulating agent PAC dosage is 500mg/L, and PAM dosage is 15mg/L.
After processing in step (3), dope volume is about 10% of percolate volume.
During the middle electrolysis of step (4), current density 40mA/cm
2, voltage 6V.
Adopt the result after the present invention: percolate is treated, and COD clearance can reach 95.7%, BOD clearance can reach 95.9%, and ammonia nitrogen removal frank can reach 95.2%.
Embodiment 3: substantially the same manner as Example 1, difference is: in step (2), coagulating agent PAC dosage is 800mg/L, and PAM dosage is 20mg/L.
After processing in step (3), dope volume is about 5% of percolate volume.
During the middle electrolysis of step (4), current density 60mA/cm
2, voltage 10V.
Adopt the result after the present invention: percolate is treated, and COD clearance can reach 96.4%, BOD clearance can reach 96.8%, and ammonia nitrogen removal frank can reach 95.8%.
Claims (8)
1. a method for treating refuse percolate, is characterized in that, the method comprises the steps:
(1) percolate is passed into equalizing tank and mix, the regulating water quality water yield;
(2) in percolate, add coagulating agent to carry out coagulating sedimentation and filtration;
(3) percolate after coagulation and filtration being processed by mechanical steam compression evaporating device carries out the processing of less energy-consumption mechanical steam compression evaporating, after processing, dope is back to before equalizing tank, after mixing with percolate water inlet, enter equalizing tank, discharge or reuse after absorption column of gas absorbs of the waste gas that mechanical steam compression evaporating produces;
(4) water of condensation mechanical steam compression evaporating device being produced passes into electrolyzer, regulates required electric current, the voltage of electrolytic reaction, makes positive plate brine electrolysis produce HO or strong oxidizer.
2. the method for a kind for the treatment of refuse percolate according to claim 1, is characterized in that, in step (1), impeller whipping device is installed in equalizing tank, by stirring, percolate is mixed.
3. the method for a kind for the treatment of refuse percolate according to claim 1, it is characterized in that, described in step (2), coagulating agent is polymerize aluminum chloride and polyacrylamide, and polymerize aluminum chloride dosage is 500～800mg/L, and polyacrylamide dosage is 15～20mg/L.
4. the method for a kind for the treatment of refuse percolate according to claim 1, is characterized in that, filter type described in step (2) adopts suction filtration.
5. the method for a kind for the treatment of refuse percolate according to claim 4, is characterized in that, filters and adopt microfiltration membrane described in step (2).
6. microfiltration membrane according to claim 5, is characterized in that, microfiltration membrane adopts mesopore tunica fibrosa, and mould material is polyvinylidene difluoride (PVDF), aperture 0.2 μ m.
7. the method for a kind for the treatment of refuse percolate according to claim 1, is characterized in that, after processing in step (3), dope volume is 5%～10% of percolate volume.
8. the method for a kind for the treatment of refuse percolate according to claim 1, is characterized in that, current density 40～60mA/cm in step (4)
2, voltage 6～10V, positive plate adopts RuO
2-IrO
2-TiO
2/ Ti material, negative plate adopts stainless material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310649716.XA CN103663834A (en) | 2013-12-06 | 2013-12-06 | Treating method for landfill leachate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310649716.XA CN103663834A (en) | 2013-12-06 | 2013-12-06 | Treating method for landfill leachate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103663834A true CN103663834A (en) | 2014-03-26 |
Family
ID=50302738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310649716.XA Pending CN103663834A (en) | 2013-12-06 | 2013-12-06 | Treating method for landfill leachate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103663834A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104891725A (en) * | 2015-06-12 | 2015-09-09 | 东莞市红树林环保科技有限公司 | Landfill leachate evaporator |
| CN105016574A (en) * | 2015-07-02 | 2015-11-04 | 合肥白云环卫设备有限公司 | Method for processing garbage filtrate |
| CN105271608A (en) * | 2014-11-14 | 2016-01-27 | 南京万德斯环保科技有限公司 | Deep processing method for landfill leachate |
| CN107902811A (en) * | 2018-01-03 | 2018-04-13 | 深圳众意远诚环保科技有限公司 | A kind of high ammonia-nitrogen wastewater heavy metal pretreatment system |
| CN108609787A (en) * | 2018-03-30 | 2018-10-02 | 北京格林雷斯环保科技有限公司 | A kind of landfill leachate submersible burning processing system |
| CN110054344A (en) * | 2019-05-31 | 2019-07-26 | 西安建筑科技大学 | A kind of processing method of folic acid waste water |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1478737A (en) * | 2003-07-14 | 2004-03-03 | 宜兴鹏鹞阳光环保有限公司 | Garbage percolation liquid treatment process |
| CN102424494A (en) * | 2011-10-14 | 2012-04-25 | 北京工业大学 | Method for treating garbage leachate by multistage electrolysis |
| CN102432130A (en) * | 2011-10-14 | 2012-05-02 | 北京工业大学 | Leachate and concentrated solution treatment method for refuse landfill |
| CN102557171A (en) * | 2012-01-18 | 2012-07-11 | 深圳市百斯特环保工程有限公司 | Method and system for treating nano-filtration concentrated liquor of landfill leachate |
| CN202766385U (en) * | 2012-09-18 | 2013-03-06 | 浩蓝环保股份有限公司 | Treatment system for leachate generated by landfill space of refuse |
-
2013
- 2013-12-06 CN CN201310649716.XA patent/CN103663834A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1478737A (en) * | 2003-07-14 | 2004-03-03 | 宜兴鹏鹞阳光环保有限公司 | Garbage percolation liquid treatment process |
| CN102424494A (en) * | 2011-10-14 | 2012-04-25 | 北京工业大学 | Method for treating garbage leachate by multistage electrolysis |
| CN102432130A (en) * | 2011-10-14 | 2012-05-02 | 北京工业大学 | Leachate and concentrated solution treatment method for refuse landfill |
| CN102557171A (en) * | 2012-01-18 | 2012-07-11 | 深圳市百斯特环保工程有限公司 | Method and system for treating nano-filtration concentrated liquor of landfill leachate |
| CN202766385U (en) * | 2012-09-18 | 2013-03-06 | 浩蓝环保股份有限公司 | Treatment system for leachate generated by landfill space of refuse |
Non-Patent Citations (1)
| Title |
|---|
| 汪梅: ""垃圾填埋场渗滤液的MVC蒸发处理工艺介绍"", 《广东化工》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105271608A (en) * | 2014-11-14 | 2016-01-27 | 南京万德斯环保科技有限公司 | Deep processing method for landfill leachate |
| CN104891725A (en) * | 2015-06-12 | 2015-09-09 | 东莞市红树林环保科技有限公司 | Landfill leachate evaporator |
| CN105016574A (en) * | 2015-07-02 | 2015-11-04 | 合肥白云环卫设备有限公司 | Method for processing garbage filtrate |
| CN107902811A (en) * | 2018-01-03 | 2018-04-13 | 深圳众意远诚环保科技有限公司 | A kind of high ammonia-nitrogen wastewater heavy metal pretreatment system |
| CN108609787A (en) * | 2018-03-30 | 2018-10-02 | 北京格林雷斯环保科技有限公司 | A kind of landfill leachate submersible burning processing system |
| CN110054344A (en) * | 2019-05-31 | 2019-07-26 | 西安建筑科技大学 | A kind of processing method of folic acid waste water |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10150685B2 (en) | Water reclamation method integrating magnetic resin adsorption and electrosorption | |
| CN103663834A (en) | Treating method for landfill leachate | |
| CN102674632B (en) | Garbage leachate zero-emission reuse treatment method | |
| CN103723799A (en) | Electrodialyzer and near-zero-release industrial wastewater recycling technique | |
| CN103304078A (en) | Laboratory wastewater treatment process equipment and wastewater treatment method using same | |
| CN102120668A (en) | Printed circuit board integrated wastewater resource utilization method | |
| CN103274564A (en) | Technology for treating waste water produced by rubber accelerator production | |
| CN103102049B (en) | High-nitrogen-concentration organic wastewater treatment method | |
| CN110921954A (en) | Method and system for treating oilfield wastewater by combining iron-carbon micro-electrolysis and Fenton oxidation | |
| CN105271608A (en) | Deep processing method for landfill leachate | |
| CN101264997A (en) | Method for processing film filtration concentrated solution of domestic refuse percolate treatment | |
| CN110002639A (en) | A kind of processing unit and method of middle and advanced stage aged refuse in MSW landfill percolate | |
| CN104118973A (en) | Technique for processing reverse osmosis concentrated water | |
| CN104591432A (en) | Processing method of landfill leachate film concentrated solution | |
| CN104230098A (en) | Industrial wastewater treatment method | |
| CN104193051A (en) | Deep purification treatment method for printing ink wastewater | |
| CN107224999B (en) | A kind of resin desorption liquid method of disposal based on electrodialytic technique | |
| CN105366871A (en) | Processing method of landfill leachate | |
| CN101486524A (en) | Comprehensive processing method for furfural production wastewater | |
| CN108675565A (en) | A kind of system and method for advanced treatment of landfill leachate | |
| CN203373221U (en) | Laboratory wastewater treatment process equipment | |
| CN105481178A (en) | Landfill leachate treatment process with softening treatment | |
| CN205575835U (en) | Electroplating wastewater treatment system | |
| CN104192955B (en) | The treatment process of ultrafiltration and concentration liquid in a kind of percolate membrane treatment process | |
| CN202046959U (en) | Reclaimed water reusing equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140326 |
|
| RJ01 | Rejection of invention patent application after publication |