CN101948215B - Treatment process of landfill leachate - Google Patents
Treatment process of landfill leachate Download PDFInfo
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- CN101948215B CN101948215B CN2010102693054A CN201010269305A CN101948215B CN 101948215 B CN101948215 B CN 101948215B CN 2010102693054 A CN2010102693054 A CN 2010102693054A CN 201010269305 A CN201010269305 A CN 201010269305A CN 101948215 B CN101948215 B CN 101948215B
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- 238000000034 method Methods 0.000 title claims abstract description 23
- 230000008569 process Effects 0.000 title claims abstract description 17
- 239000000149 chemical water pollutant Substances 0.000 title abstract 3
- 238000000108 ultra-filtration Methods 0.000 claims abstract description 20
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims abstract description 17
- 230000004048 modification Effects 0.000 claims abstract description 14
- 238000012986 modification Methods 0.000 claims abstract description 14
- 239000007788 liquid Substances 0.000 claims abstract description 13
- 239000006228 supernatant Substances 0.000 claims abstract description 13
- 230000001112 coagulating effect Effects 0.000 claims abstract description 12
- 230000007935 neutral effect Effects 0.000 claims abstract description 8
- 239000010802 sludge Substances 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000000701 coagulant Substances 0.000 claims abstract description 5
- 230000001105 regulatory effect Effects 0.000 claims abstract description 5
- 238000001914 filtration Methods 0.000 claims abstract description 4
- 238000001556 precipitation Methods 0.000 claims description 12
- 238000007254 oxidation reaction Methods 0.000 claims description 8
- 238000006396 nitration reaction Methods 0.000 claims description 7
- 230000003647 oxidation Effects 0.000 claims description 7
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 claims description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 6
- 239000002351 wastewater Substances 0.000 claims description 4
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 3
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 3
- 239000000920 calcium hydroxide Substances 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 239000012141 concentrate Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 3
- 238000005868 electrolysis reaction Methods 0.000 claims description 3
- 238000011084 recovery Methods 0.000 claims description 3
- 238000002407 reforming Methods 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 239000002562 thickening agent Substances 0.000 claims description 3
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 238000004062 sedimentation Methods 0.000 abstract description 3
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000005086 pumping Methods 0.000 abstract 1
- 239000013049 sediment Substances 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 6
- 239000010813 municipal solid waste Substances 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 3
- 238000006731 degradation reaction Methods 0.000 description 3
- 239000000356 contaminant Substances 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 238000005842 biochemical reaction Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000010815 organic waste Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000009280 upflow anaerobic sludge blanket technology Methods 0.000 description 1
- 238000004056 waste incineration Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Water Treatment By Electricity Or Magnetism (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention discloses a treatment process of landfill leachate, which comprises the following process steps: (1) filtering the landfill leachate through a fine grid, and enabling a liquid part to enter a coagulating sedimentation tank; (2) adding a coagulant into the coagulating sedimentation tank, separating the sediment under the action of a stirrer, and feeding the obtained supernatant into an adjusting tank; (3) regulating the pH of the supernatant obtained in the step (2) to be neutral by a regulating reservoir; (4) pumping the neutral supernatant obtained in the step (3) into an upflow anaerobic sludge blanket by an anaerobic circulating pump for treatment, and allowing the effluent after anaerobic treatment to enter a denitrification tank and a nitrification tank for denitrification and nitrification treatment and then enter an ultrafiltration device for ultrafiltration; (5) performing ozone biochemical modification on the ultrafiltered clear liquid; (6) and the water after the modification treatment is directly discharged after secondary biochemical treatment. The invention has the advantages of high efficiency, low energy consumption and easy operation management.
Description
Technical field
The present invention relates to sewage treatment process, especially relate to a kind of advanced treatment process of percolate.
Background technology
In the current treatment of urban garbage, sanitary landfill and waste incineration are because it has advantage such as cost is low, convenient management and in refuse treatment, is used widely, and the percolate that rubbish produces is a kind of high pollution concentration, polycomponent organic waste water.Along with the quick growth of rubbish quantity, reach people to the environmental problem pay attention to day by day, add the more severe supervision standard that government handles problems to percolate, necessarily have a large amount of percolate treatment project in the years to come and will begin to build.
Comparatively sophisticated in the current now refuse leachate treatment technology is MBR, can be known by " 2009 national advanced prevention and cure of pollution exemplary teachings register ".But through the MBR water outlet COD behind anaerobism+nitration denitrification still between 400mg/L～800mg/L, far above direct emission standard.Because this portion C OD continues to add NF and RO not possess the directly condition of biochemistry basically so present advanced treatment technology has only.But these physical treatment methods exist the many technology barriers that can't go beyond like the pollution problem of film, the lost of life problem of film, the handling problems of separating dope, processing efficiency problem, energy consumption problem or the like.
Biochemical processing, because of its working cost is few, and can be effectively thorough degradation of contaminant, be optimal second-stage treatment process program.But, because the contained COD of ultrafiltration clear liquid basically can't biochemical treatment, therefore must carry out effective biochemical modification to it, just might carry out the secondary biochemical treatment.
Summary of the invention
In current percolate treating processes, drawbacks such as the poor efficiency that leachate treatment technology exists, high energy consumption, the object of the invention are to provide a kind of percolate treating process that possesses efficient, less energy-consumption, is easy to operational management.
The present invention is achieved in that a kind of treatment process of percolate, takes following process step:
(1), percolate filters solid outward transport backfill wherein, liquid portion entering coagulative precipitation tank through fine fack;
(2), add coagulating agent at coagulative precipitation tank, and under the effect of stirrer precipitation separation, the supernatant of gained gets into equalizing tank;
(3), the supernatant of step (2) gained is regulated pH to neutral through equalizing tank;
(4), the neutral supernatant of step (3) gained is squeezed into by the anaerobism recycle pump that the upward flow formula is anaerobic mud bed to be handled; Methane recovery wherein is used to improve the temperature of waste water, and the effluent after the anaerobic treatment gets into denitrification pond, nitrification tank and carries out that denitrification and nitration treatment are laggard goes into ultra-filtration equipment and carry out ultrafiltration;
(5), the clear liquid after the ultrafiltration carries out the biochemical modification of ozone, the biochemical reforming system of ozone is made up of ozone reactor and ozone oxidation pond, the employing ozone oxidation also is aided with interior electrolysis means, and the ultrafiltration clear liquid is carried out modification;
(6), after the water of modification after handling carries out secondary biochemical treatment again, directly discharge.
As a kind of optimal way, the throw out of the filtering solids of step (1) fine fack, step (2) coagulative precipitation tank and the throw out after step (6) secondary biochemical treatment got into carry out sludge dewatering again after sludge thickener concentrates.
Concrete, the coagulating agent in the step (2) is Poly aluminum Chloride (PAC) and/or calcium hydroxide.
Concrete, the ultra-filtration equipment in the step (4) is external tubular type ultra-filtration equipment.
Concrete, the nitrification tank in the step (4) utilizes gas blower that the gas of reaction is discharged when nitration treatment.
The advanced waste treatment method that the present invention proposes adopts coagulating sedimentation+UASB+MBR+O
3Oxidation modification+secondary biochemical treatment technology, the ultrafiltration clear liquid can pass through normal biochemical reaction through after the ozone oxidation, effectively thoroughly degradation of contaminant, directly qualified discharge.The inventive method can be used for the advanced treatment of city garbage percolate, also can be used for the processing of other organic wastewater with difficult degradation thereby.Less than 100mg/L, not only the percolate processing efficiency is high, and reduced investment through the supernatant C OD concentration after the present invention's processing, and running cost is low, has reached the practical applications level.
Description of drawings
Fig. 1 is a process flow sheet of the present invention.
Embodiment
Below in conjunction with embodiment and contrast accompanying drawing the present invention is done further explain.
A kind of treatment process of percolate, take following process step:
(1), percolate filters solid outward transport backfill wherein, liquid portion entering coagulative precipitation tank through fine fack;
(2), add Poly aluminum Chloride (PAC) and calcium hydroxide at coagulative precipitation tank, and under the effect of stirrer precipitation separation, the supernatant of gained gets into equalizing tank;
(3), the supernatant of step (2) gained is regulated pH to neutral through equalizing tank;
(4), the neutral supernatant of step (3) gained is squeezed into by the anaerobism recycle pump that the upward flow formula is anaerobic mud bed to be handled; Methane recovery wherein is used to improve the temperature of waste water; And the effluent after the anaerobic treatment gets into the denitrification pond, nitrification tank carries out denitrification and nitration treatment; Nitrification tank utilizes gas blower that the gas of reaction is discharged when nitration treatment, and aftertreatment fluid gets into external tubular type ultra-filtration equipment and carries out ultrafiltration;
(5), the clear liquid after the ultrafiltration carries out the biochemical modification of ozone, the biochemical reforming system of ozone is made up of ozone reactor and ozone oxidation pond, the employing ozone oxidation also is aided with interior electrolysis means, and the ultrafiltration clear liquid is carried out modification;
(6), after the water of modification after handling carries out secondary biochemical treatment again, directly discharge.
The throw out of the filtering solids of step (1) fine fack, step (2) coagulative precipitation tank and the throw out after step (6) secondary biochemical treatment get into and carry out sludge dewatering again after sludge thickener concentrates simultaneously.
More than be that the treatment process of a kind of percolate of the present invention is set forth; Be used for helping to understand the present invention; But embodiment of the present invention is not restricted to the described embodiments; Change, the modification that other any do not deviate under the principle of the invention to be done, substitute, combination, simplify, all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (5)
1. the treatment process of a percolate is characterized in that taking following process step:
(1), percolate filters solid outward transport backfill wherein, liquid portion entering coagulative precipitation tank through fine fack;
(2), add coagulating agent at coagulative precipitation tank, and under the effect of stirrer precipitation separation, the supernatant of gained gets into equalizing tank;
(3), the supernatant of step (2) gained is regulated pH to neutral through equalizing tank;
(4), the neutral supernatant of step (3) gained is squeezed into by the anaerobism recycle pump that the upward flow formula is anaerobic mud bed to be handled; Methane recovery wherein is used to improve the temperature of waste water, and the effluent after the anaerobic treatment gets into denitrification pond, nitrification tank and carries out that denitrification and nitration treatment are laggard goes into ultra-filtration equipment and carry out ultrafiltration;
(5), the clear liquid after the ultrafiltration carries out the biochemical modification of ozone, the biochemical reforming system of ozone is made up of ozone reactor and ozone oxidation pond, the employing ozone oxidation also is aided with interior electrolysis means, and the ultrafiltration clear liquid is carried out modification;
(6), after the water of modification after handling carries out secondary biochemical treatment again, directly discharge.
2. the treatment process of a kind of percolate according to claim 1 is characterized in that: carry out sludge dewatering again after the throw out of the filtering solids of said step (1) fine fack, step (2) coagulative precipitation tank and the entering of the throw out after step (6) secondary biochemical treatment sludge thickener concentrate.
3. the treatment process of a kind of percolate according to claim 1, it is characterized in that: the coagulating agent in the said step (2) is Poly aluminum Chloride (PAC) and/or calcium hydroxide.
4. the treatment process of a kind of percolate according to claim 1, it is characterized in that: the ultra-filtration equipment in the said step (4) is external tubular type ultra-filtration equipment.
5. the treatment process of a kind of percolate according to claim 1 is characterized in that: the nitrification tank in the said step (4) utilizes gas blower that the gas of reaction is discharged when nitration treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102693054A CN101948215B (en) | 2010-08-31 | 2010-08-31 | Treatment process of landfill leachate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102693054A CN101948215B (en) | 2010-08-31 | 2010-08-31 | Treatment process of landfill leachate |
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| Publication Number | Publication Date |
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| CN101948215A CN101948215A (en) | 2011-01-19 |
| CN101948215B true CN101948215B (en) | 2012-05-30 |
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| CN2010102693054A Active CN101948215B (en) | 2010-08-31 | 2010-08-31 | Treatment process of landfill leachate |
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| CN102249501B (en) * | 2011-07-15 | 2013-03-27 | 波鹰(厦门)科技有限公司 | Device and method for treating wastewater produced by hair-product manufacturing |
| CN102432130B (en) * | 2011-10-14 | 2013-03-27 | 朗照技术(北京)有限公司 | Leachate and concentrated solution treatment method for refuse landfill |
| CN102674626B (en) * | 2012-04-28 | 2013-08-21 | 东莞市科达环保工程有限公司 | System and method for treatment and recovery of electronic electroplating wastewater |
| CN103570182B (en) * | 2012-07-24 | 2015-07-22 | 上海洗霸科技股份有限公司 | Processing method and processing apparatus for garbage leachate |
| CN102861762B (en) * | 2012-09-27 | 2014-10-29 | 江苏维尔利环保科技股份有限公司 | Anaerobic digestion treatment method for organic garbages |
| CN103241909B (en) * | 2013-05-31 | 2014-01-29 | 波鹰(厦门)科技有限公司 | Process device for waste water generated in tobacco sheet production |
| CN104478157B (en) * | 2014-11-13 | 2016-05-18 | 嘉园环保有限公司 | A kind of processing method of percolate nanofiltration concentrate |
| CN104436770B (en) * | 2014-12-01 | 2016-05-04 | 长沙威保特环保科技有限公司 | Solid waste is processed percolate in field and is entered the front pretreatment system of regulating reservoir and processing method |
| CN104628230B (en) * | 2015-02-06 | 2017-02-01 | 江苏广域化学有限公司 | Equipment and process for sewage treatment |
| CN105776741A (en) * | 2016-03-23 | 2016-07-20 | 北京神雾环境能源科技集团股份有限公司 | Refuse pyrolysis comprehensive sewage treatment system and method |
| CN106365376A (en) * | 2016-08-30 | 2017-02-01 | 宜兴市中发水处理环保设备有限公司 | Treating system applied to garbage leachate |
| CN107043195B (en) * | 2017-02-22 | 2020-04-24 | 湖南亿纳环保科技有限公司 | Treatment method of areca nut wastewater |
| CN107746149A (en) * | 2017-06-04 | 2018-03-02 | 江苏沃尔特环保有限公司 | A kind of New-type refuse vehicle percolation liquid treating system |
| CN109574372A (en) * | 2017-09-29 | 2019-04-05 | 上海中海龙高新技术研究院 | A kind of processing method of consumer waste infiltration liquid |
| CN111646636A (en) * | 2020-05-19 | 2020-09-11 | 深圳能源资源综合开发有限公司 | Pretreatment method and system for oily waste leachate |
| CN113233704A (en) * | 2021-05-18 | 2021-08-10 | 河北首朗新能源科技有限公司 | High-concentration organic wastewater treatment equipment and method |
| CN114735900A (en) * | 2022-05-06 | 2022-07-12 | 湖南省煜城环保科技有限公司 | Treatment process and treatment system for landfill leachate |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05228459A (en) * | 1992-02-18 | 1993-09-07 | Kurita Water Ind Ltd | Apparatus for recovering methane gas from landfill site |
| CN100398470C (en) * | 2006-03-17 | 2008-07-02 | 深圳市百斯特环保工程有限公司 | Infiltration method for treating garbage |
| CN101357812B (en) * | 2007-07-31 | 2010-12-15 | 深圳市百斯特环保工程有限公司 | Processing method for domestic garbage leachate |
| CN101597131B (en) * | 2009-06-05 | 2012-05-30 | 浙江旺能环保股份有限公司 | Method and device for treating garbage percolate |
| CN101671095B (en) * | 2009-09-11 | 2012-01-25 | 宇星科技发展(深圳)有限公司 | Garbage leachate treatment technique |
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| CN101948215A (en) | 2011-01-19 |
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