CN1554602A - Method for treating garbage percolation liquid - Google Patents
Method for treating garbage percolation liquid Download PDFInfo
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- CN1554602A CN1554602A CNA2003101127764A CN200310112776A CN1554602A CN 1554602 A CN1554602 A CN 1554602A CN A2003101127764 A CNA2003101127764 A CN A2003101127764A CN 200310112776 A CN200310112776 A CN 200310112776A CN 1554602 A CN1554602 A CN 1554602A
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Abstract
The process of treating garbage percolation liquid includes successive pH regulating, acid fermentation in acidifying tank, anaerobic biological treatment, deammoniation, optional aerobic treatment and air flotation treatment before exhaust. Unlike available garbage percolation liquid treating process, the present invention has lowered investment.
Description
Technical field
The present invention relates to the method that high concentrated organic wastewater is handled, especially relate to percolate (also claiming the to ooze drop liquid) treatment process of refuse landfill.
Background technology
Percolate is the complicated and high concentrated organic wastewater that change age with the field of refuse landfill of a kind of composition, and the biodegradability of its waste water is gradually reducing.The principal character of percolate is: (1) composition complexity, not only contain the organism of high density, but also contain metal ion and the pollutent with toxic action in the waste water; (2) contain the NH of high density in the waste water
3-N has not only increased the weight of the pollution level of receiving water body, and has brought difficulty for the selection of its treatment process; (3) fluctuation of the water quality and quantity of waste water is bigger; (4) waste water is with the intensive stench and the serious colourity that exceeds standard.
Present domestic garbage filter liquid processing method is more, summarizes and gets up to mainly contain following four kinds:
1, light Fenton processing+biochemical treatment
Chinese patent application 02147871.6 discloses a kind of technology of administering percolate from garbage filling field, and its step is (1) adds 250-1000mg/l in coagulation basin FeCl
36H
2O; (2) under acidic conditions, carrying out the photochemical reaction processing behind the coagulating sedimentation; (3) carry out anaerobic treatment; (4) carry out aerobic treatment.High voltage mercury lamp is adopted in described photochemically reactive lamp source, and light application time is 2-6 hour; Dissolved oxygen is controlled at below the 0.2mg/l during described anaerobic treatment, and the residence time is 1.5-4 days.
2, physico-chemical pretreatment+biochemical treatment: as Chinese patent application 01128917.1, this is a kind of consumer waste infiltration liquid treatment process, mainly may further comprise the steps: the former water of percolate is tentatively filtered, remove thicker impurity, enter the biochemical reactor that constitutes by three biochemical reaction zones then and carry out biochemical reaction, by organism in the microbiological deterioration percolate and NH
3-N, and then carry out materialization and handle.Materialization is handled and can be carried out the flocculation sediment materialization with flocculation agent earlier and handle, and reduces BOD and colourity, and then is that the filter plant of filtration medium filters in order to nano material, further reduces COD and colourity.Physico-chemical pretreatment also comprises coagulation, electrolysis, photochemical catalysis, Fenton oxidizing process etc.
3, ammonia stripping pre-treatment also comprises and the combining of biochemical treatment, as the treatment process good decolorizing effect of Shenzhen percolate from garbage filling field.
4, ammonia stripping pre-treatment+biochemical treatment+film is handled
But existing technology must guarantee all reaching index preferably on the efficient He on the index, and some formula investing height especially also need be stood the operation test of practice.The every index of percolate after method of the present invention is handled all can reach the emission standard of regulation, and efficient is higher.
Summary of the invention
The present invention seeks to fully digesting external anaerobic biological technology and summing up on the basis of domestic conventional garbage leachate processing method, handle practice through a plurality of percolates, obtain a kind of new garbage filter liquid processing method, it has overcome the deficiency of domestic anaerobic biological technology and domestic current refuse leachate treatment technology, provide a kind of operating procedure simple, less investment, the low treatment process that can the normal temperature operation of running cost.
Method of the present invention such as following: garbage filter liquid processing method, it is characterized in that percolate is after PH regulates, carry out the acid fermentation reaction at acidification pool, pH value is about 5.5-6.6, waste water after the acidifying directly carries out anaerobic treatment through anaerobic system, enter the ammonia stripping through the waste water of anaerobic treatment and carry out denitrogenation processing, the waste water after the denitrogenation processing is looked emission standard and is directly discharged or carry out aerobic treatment or air supporting is handled.Also do not reach as colourity and particle and to re-use air supporting when requiring and handle the back discharging.
The present invention has corrected the technology of biochemical treatment after the present domestic first materialization of comparatively popularize adopting, the inventive method meets garbage filter liquid treatment machine reason more, and the ton waste water that percolate is administered is invested and the operation cost of rubbish ton waste water is significantly reduced, and is the comparatively ideal technology that meets national conditions.Through the nearly 1 year operation of Nanjing waterside pavilion refuse landfill sewage works: its effluent index is stabilized in COD
Cr＜100mg/l, NH
3-N＜25mg/l, SS＜70mg/l, colourity＜50, PH6-9, discharge of wastewater reach the first discharge standard in the national waste water comprehensive discharge standard (GB8978-96).Ton waste water working cost is about 5 yuan.And the general COD of water quality of waterside pavilion refuse landfill percolate water inlet
Cr2200-9640mg/l, SS more than 800mg/l, BOD
5At 800-1600mg/l, NH
3-N is at 512-1237mg/l, and its water outlet all can reach more stable COD
Cr, NH
3The index of-N, SS, colourity.
Subordinate list 1:2003.6-2003.11 Nanjing waterside pavilion refuse landfill percolate (600t/d) is handled monitoring data
| 2003.6-2003.11 | Former water | Water outlet |
| COD(mg/l) | 2200-9640 | ?54-103 |
| NH 3-N(mg/l) | 512-1237 | ?14-31 |
| SS(mg/l) | 849-1560 | ?39-87 |
| PH | 8.2-9.1 | ?7.0-7.6 |
| Colourity | 1100-1600 | ?＜50 |
Description of drawings
Fig. 1 is artwork of the present invention (this technology is called for short 4AF technology),
Fig. 2 is the acidification technique schema
Embodiment
Acidification technique: the waste water acid fermentation carries out in acidification pool.The stage system that is divided into acid fermentation and alkaline fermentation according to the organism anaerobic digestion process of Buswell designs.The process in this stage finishing smoothly with the anaerobism effect of the methanogen that guarantees the follow-up alkaline fermentation stage.In this stage, there is a large amount of lipid acid to produce, the PH of fermented liquid is reduced, in the engineering practice means, regulate PH by mineral acid and finish separating out of a large amount of lipid acid (VFA).In most cases, mineral acid adjusting PH6-6.6 is better.
Anaerobic technique:
Enter anaerobic reactor through the pretreated waste water of acidifying and carry out anaerobic biological treatment, the anaerobic treatment of the present invention's research and development adopts flow lifting type anaerobic sludge layer reactor, by engineering practice, broken and thought that in the past the anaerobic treatment process processing efficiency is low, need comparatively high temps and, can adapt to differing temps and different concentration operations than the traditional concept of long residence time.After 60 days, anaerobic sludge is black to this system for anaerobic treatment at commissioning test, and structure is closely knit, COD
CrClearance reaches about 90%, and anaerobic system starts successfully.
Generally as long as at room temperature carry out, temperature in the winter time can increase the temperature of water by interchanger to above-mentioned technology when sub-zero zero.
The ammonia stripping:
Ammonia nitrogen in the waste water is usually with ammonium ion (NH
4 +) and free ammonia (NH
3) state keep balance and exist (
)。After anaerobic treatment, the ammonia nitrogen in the waste water is mainly with free ammonia (NH
3) form and to be present in the waste water, can remove ammonia nitrogen in the waste water effectively by the circulation blow-removing form.Prove that through engineering practice the stripping efficient of ammonia nitrogen is 79.3%-90%, gas-water ratio is 2250: 1, and hydraulic load is 2.5m
3/ m
3.h, the stripping time is 0.5-3h.
The air blast stripping is direct aeration in special stripping tower, reaches deamination and improves the effect of nutritive props.
Aerobic treatment:
Technology aerobic treatment of the present invention adopts activated sludge process.Determine return sludge ratio according to the nitrogen dynamics formula, following advantage can be arranged, 1, can control activated sludge concentration effectively, improve volumetric loading; 2, finish the nitrification and denitrification reaction; 3, increase the effect of biological flocculant; 4, reduce the discharging of excess sludge.
When above-mentioned treating water still can not reach preferably standard, re-use air supporting and handle at last.
Air-flotation treatment method of the present invention is the method and apparatus of using always, with removal and the effective decolorization that guarantees the non-degradable material in the waste water.
Claims (8)
1, leachate processing method, it is characterized in that the percolate of percolate elder generation after PH regulates carries out the acid fermentation reaction at acidification pool, waste water after the acidifying directly carries out anaerobic biological treatment through anaerobic system, enter the ammonia stripping through the waste water of anaerobic treatment and carry out deamination and handle, the waste water after deamination is handled is looked emission standard and is directly discharged or carry out aerobic treatment.
2, by the described garbage filter liquid processing method of claim 1, it is characterized in that acidifying carries out in acidification pool, regulate pH value about 5-6.6, make that fatty acid out goes out in the acidification pool.
3,, it is characterized in that the anaerobic treatment reactor adopts flow lifting type anaerobic sludge layer reactor by claim 1 or 2 described garbage filter liquid processing methods.
4,, it is characterized in that the ammonia stripping time is 0.5-3h by claim 1 or 2 described garbage filter liquid processing methods.
5, by claim 1 or 2 described garbage filter liquid processing methods, it is characterized in that the air blast stripping is direct aeration in special stripping tower, reach deamination and improve the effect of nutritive props.
6,, it is characterized in that aerobic treatment adopts activated sludge process by claim 1 or 2 described garbage filter liquid processing methods.
7,, it is characterized in that discharging after air supporting is handled again by claim 1 or 2 described garbage filter liquid processing methods.
8, by the described garbage filter liquid processing method of claim 2, it is better at 6-6.6 to it is characterized in that pH value is regulated in acidifying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2003101127764A CN1554602A (en) | 2003-12-26 | 2003-12-26 | Method for treating garbage percolation liquid |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2003101127764A CN1554602A (en) | 2003-12-26 | 2003-12-26 | Method for treating garbage percolation liquid |
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| Publication Number | Publication Date |
|---|---|
| CN1554602A true CN1554602A (en) | 2004-12-15 |
Family
ID=34336695
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| CNA2003101127764A Pending CN1554602A (en) | 2003-12-26 | 2003-12-26 | Method for treating garbage percolation liquid |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1314481C (en) * | 2005-01-27 | 2007-05-09 | 桂林矿产地质研究院 | Method for improving capacity of epidesmine in removing organic matters in landfill leachate |
| CN100348520C (en) * | 2005-07-20 | 2007-11-14 | 贵州远达环保工程有限公司 | Technique for treating garbage percolate based on diatomite and UASB |
| CN101704611B (en) * | 2009-11-05 | 2011-05-18 | 无锡惠联科轮环保技术发展有限公司 | Method for processing percolation liquid of domestic garbage |
| CN102295387A (en) * | 2011-07-27 | 2011-12-28 | 上海复旦水务工程技术有限公司 | Device and method for processing high-density landfill leachate |
| CN102557339A (en) * | 2011-12-19 | 2012-07-11 | 北京昊业怡生科技有限公司 | Treatment method of landfill leachate |
| CN103739158A (en) * | 2013-12-24 | 2014-04-23 | 中山市环保实业发展有限公司 | Method for treating early-stage landfill leachate |
| CN106630395A (en) * | 2016-11-30 | 2017-05-10 | 中节能（沧州）环保能源有限公司 | Leachate sewage treatment method |
| CN111847796A (en) * | 2020-07-31 | 2020-10-30 | 中节能工程技术研究院有限公司 | System and method for treating leachate of waste incineration plant |
-
2003
- 2003-12-26 CN CNA2003101127764A patent/CN1554602A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1314481C (en) * | 2005-01-27 | 2007-05-09 | 桂林矿产地质研究院 | Method for improving capacity of epidesmine in removing organic matters in landfill leachate |
| CN100348520C (en) * | 2005-07-20 | 2007-11-14 | 贵州远达环保工程有限公司 | Technique for treating garbage percolate based on diatomite and UASB |
| CN101704611B (en) * | 2009-11-05 | 2011-05-18 | 无锡惠联科轮环保技术发展有限公司 | Method for processing percolation liquid of domestic garbage |
| CN102295387A (en) * | 2011-07-27 | 2011-12-28 | 上海复旦水务工程技术有限公司 | Device and method for processing high-density landfill leachate |
| CN102557339A (en) * | 2011-12-19 | 2012-07-11 | 北京昊业怡生科技有限公司 | Treatment method of landfill leachate |
| CN102557339B (en) * | 2011-12-19 | 2014-10-01 | 北京昊业怡生科技有限公司 | Treatment method of landfill leachate |
| CN103739158A (en) * | 2013-12-24 | 2014-04-23 | 中山市环保实业发展有限公司 | Method for treating early-stage landfill leachate |
| CN103739158B (en) * | 2013-12-24 | 2015-06-03 | 中山市环保实业发展有限公司 | Method for treating early-stage landfill leachate |
| CN106630395A (en) * | 2016-11-30 | 2017-05-10 | 中节能（沧州）环保能源有限公司 | Leachate sewage treatment method |
| CN111847796A (en) * | 2020-07-31 | 2020-10-30 | 中节能工程技术研究院有限公司 | System and method for treating leachate of waste incineration plant |
| CN111847796B (en) * | 2020-07-31 | 2024-04-09 | 中节能工程技术研究院有限公司 | Leachate treatment system and method for garbage incineration plant |
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