CN1176034C - Process and apparatus for urban refuse cite penetrating liquid by three stage plus one process - Google Patents
Process and apparatus for urban refuse cite penetrating liquid by three stage plus one process Download PDFInfo
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- CN1176034C CN1176034C CNB031211615A CN03121161A CN1176034C CN 1176034 C CN1176034 C CN 1176034C CN B031211615 A CNB031211615 A CN B031211615A CN 03121161 A CN03121161 A CN 03121161A CN 1176034 C CN1176034 C CN 1176034C
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- ammonia nitrogen
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Abstract
The present invention relates to a process and an apparatus for treating the percolate of urban domestic garage landfill sites with a three-stage method and a nanometer filtration advanced treatment segment. A first segment, a second segment, a third segment and a nanometer filtration depth treatment segment are connected in series; the first segment is a composite anaerobic reaction segment; the percolate enters a composite anaerobic reactor for anaerobic fermentation; energy sources of marsh gas are recovered and organic matter is degraded greatly; the second segment is a blow-off denitrogen segment; the percolate after anaerobic treatment passes through an air-float machine for air leading to remove suspended matter in the percolate; then, the percolate passes through a stripping tower to blow off ammonia nitrogen; the third segment is A/0-A/0 biochemistry segment; the organic matter and the ammonia nitrogen of the percolate are removed continually in an A/0 biological contact oxidation pond; In the nanometer filtration advanced treatment segment, the nanometer filtration advanced treatment apparatus is used for advanced treatment to further remove the organic matter which is difficult in biochemical degradation and coliform. The reasonable combination of the biochemistry and the autovulcanization principle treates the percolate of garbage landfill sites; the yielding water achieves the first level discharge standard. The present invention saves preparation cost, and has the advantages of low running cost and stable and reliable effect.
Description
Technical field
The present invention relates to a kind of Processes and apparatus of handling percolation liquid of city life garbage landfill.
Background technology
Along with expanding economy, the raising of living standards of the people, the domestic waste amount is developing with the annual growth of 6%-10%, the many exposed stackings in the suburb of municipal wastes, cause soil, water body, atmospheric severe contamination and transmission of disease, to become the social concern that influences human survival.Domestic waste landfill disposal technology is low with reduced investment, working cost, and obtains widespread use.But, in the garbage loading embeading process, also brought percolate secondary pollution problem.Percolate has the basicity height, the ammonia nitrogen concentration height, and the high and high outstanding feature of organic cod concentration of ph value belongs to very unmanageable high concentrated organic wastewater.From domestic garbage loading embeading situation, the generation of percolate is subjected to many factor affecting at present, and the water yield changes greatly, the water-quality constituents complexity, and its biodegradability becomes worse and worse along with the landfill yard field increases age, brings great difficulty for the operational management of treatment facility.Be qualified discharge, if adopt external complicated technology, it is very expensive to handle working cost, does not meet China's actual conditions.Existing main methods and equipment have following several:
1, anaerobic biological treatment: the processing that contains the percolate of high density waste for landfill yard in early days is fit to adopt anaerobic reactor to carry out pre-treatment.Anaerobic reactor is when handling the high density percolate, and tool has great advantage, consume energy low, take up an area of less.But the water outlet Pollutant levels are higher, and directly therefore qualified discharge must unite use with other treatment process.
2, aerobe is handled: aerobic treatment technology is CDDcr, the BOD in the water of place to go effectively
5, ammonia nitrogen and heavy metal thing etc.Because the low floor space of treatment process load is big, has certain limitation in the application.But for the processing of handling through the percolate of anaerobic treatment, can give full play to long characteristics of its residence time, tool has great advantage.
3, physico-chemical process: physico-chemical process processing costs height, especially directly handle percolate stoste, the processing costs costliness has limited the development and the application of these methods.
4, recharging technique: recharging technique technology is with leachate collection, makes it to be back to the technology of garbage loading embeading by sprinkling irrigation, can quicken the decomposition of component of refuse, can also realize the percolate minimizing by Evaporation.Recharging technique exists many technical problems not to be resolved at present. (1) blockage problem, because suspended solids content is higher in the percolate, the microbial reproduction amount is bigger simultaneously, is easy to make landfill layer space to stop up; (2) the acid accumulation problem appears in anaerobic digestion in the waste layer, reduces the further biochemical speed of organism; (3) low to ammonia nitrogen removal efficient; (4) foul smell that distributes during surface sprinkling causes secondary pollution to environment.Because the existence of these problems makes recharging technique have significant limitation in the sanitary filling field percolate is handled.To sum up, be badly in need of seeking a kind of leachate treatment technology of economical rationality, to reach three unifications of society, economy, environmental benefit.
Technology contents
The purpose of this invention is to provide a kind of " three-stage process+1 " and handle the Processes and apparatus of percolation liquid of city life garbage landfill, solve percolation liquid of city life garbage landfill secondary pollution problem of environment.
The present invention handles the technical scheme of percolation liquid of city life garbage landfill technology: it is characterized in that: add nanofiltration advanced treatment section by first section, second section, the 3rd section and be linked in sequence and form,
First section is the composite anaerobic conversion zone, and percolate enters hybrid anaerobic reactor, carries out anaerobically fermenting, reclaims biogas energy and degradation of organic substances significantly;
Second section is stripping denitrogenation section, and the percolate after the anaerobism passes through stripping tower stripping ammonia nitrogen again through the suspended substance of Induced-draft air float machine removal percolate;
The 3rd section is the biochemical section of A/O-A/O, is continued to remove the organism and the ammonia nitrogen of percolate by the A/O biological contact oxidation pond;
Nanofiltration advanced treatment section: carry out advanced treatment by the nanofiltration membrane treatment device, bio-refractory organism and coliform are further removed.
A kind of equipment of handling percolation liquid of city life garbage landfill is characterized in that: be linked in sequence by hybrid anaerobic reactor, Induced-draft air float machine, stripping tower, A/O contact-oxidation pool and nanofiltration advanced treatment apparatus.
Connect equalizing tank and heat exchanger before the above-mentioned hybrid anaerobic reactor.
Above-mentioned A/O biological contact oxidation pond bottom is communicated with gas blower, and the liquid outlet of A/O biological contact oxidation pond is connected with second pond.
Connect the nanofiltration advanced treatment apparatus behind the above-mentioned second pond.
Beneficial effect: " three-stage process+1 " is the reasonable combination of utilizing biochemistry, materialization principle, adopting several treatment process and device; Economical, effectively handle a kind of novel process technology of percolation liquid of city life garbage landfill, be suitable for the condition of water quality of landfill percolate: pH 5.8-8.0; COD 6000-20000mg/L; SS＜30000mg/L; Ammonia nitrogen＜3000mg/L.Leachate quality alters a great deal in time, organic concentration height in the summer percolate, CODcr/NH
4-N is than height, BOD
5/ CODcr height, basicity is relatively low, and pH is also lower, and biodegradability is good, and is better for biochemical treatment water quality.And in the winter time, organic concentration reduces, percolate CODcr/NH
4-N is low, BOD
5/ CODcr is low, and ammonia nitrogen concentration raises, and pH raises, and the water quality biodegradability is relatively poor, and for biochemical treatment, water quality is abominable.
There are hybrid anaerobic reactor unit, air supporting and stripping unit, A/O-A/O catalytic oxidation unit in main technique of the present invention unit, is called three sections, and first three section belongs to percolate two stage biological treating processes, after add one section and carry out advanced treatment for the nanofiltration membrane treatment device.When effluent quality reaches first discharge standard, compared with prior art, following characteristics are arranged:
1, " three-stage process+1 " Technology that adopts anaerobism, stripping, A/O, nanofiltration technique to form can be handled the pollutent in the percolate effectively, and treat effluent reaches the GB first discharge standard.
2, " three-stage process+1 " handles percolate, and wherein " three-stage process " born CODcr and the 95% above ammonia nitrogen removal frank more than 85%, and nanofiltration mainly is to remove the organism that is difficult to biochemical degradation, guarantees that water outlet CODcr is up to standard.
3, A/O catalytic oxidation, filling carrier is set increases biomass, improves CODcr and handles load, makes A/O oxidation pond organic loading reach 0.2-0.3kgCODcr/m
3.d, has 83.9% CODcr clearance.The aeration denitrogenation combines with biological denitrificaion and makes it have 98% deoxidation effect in the A/O pond, and A/O bears in the pond concentration of ammonia nitrogen can be up to 300-700mg/l.
4, the main technical details of " three-stage process+1 " Technology has been proposed: ph value, ammonia nitrogen, basicity, temperature, solved the problems of emerged in operation, in time the adjusting process parameter guarantees that treatment effect is reliable and stable.
5, hybrid anaerobic reactor is handled percolate, and the biogas rate is 0.35-0.56m
3/ kg.CODcr reclaims this part biogas, is used for the intensification of anaerobism workshop section, and save energy is taken, and reduces working cost.
6, rationally utilize the high basicity of percolate, high ammonia nitrogen, high pH value characteristic, under adjust pH situation not, can carry out the stripping ammonia nitrogen smoothly, deoxidation efficient reaches 53%-71%, guarantees that water outlet reaches the first discharge standard of GB16889-1997 " consumer waste filling and embedding pollution control criterion " regulation.Save medicament expense, working cost reduces, and ton water treatment expense is about 11.49 yuan/t. percolate, and it is most economical comparing with processing costs in the percolate both domestic and external field, is applicable to the processing of consumer waste landfill percolate.
Description of drawings
Fig. 1 is that " three-stage process+1 " handles percolation liquid of city life garbage landfill technical process and equipment connection diagram.
Among the figure: 1-equalizing tank, 2-heat exchanger, 3-anaerobic reactor, 4-Induced-draft air float machine, 5-stripping tower, 6-A/O contact-oxidation pool, 7-gas blower, 8-second pond, 9-nanofiltration advanced treatment apparatus.
Embodiment
" three-stage process+1 " handles percolation liquid of city life garbage landfill technology, adding nanofiltration advanced treatment section by first section, second section, the 3rd section is linked in sequence and forms, first section is the composite anaerobic conversion zone, percolate enters hybrid anaerobic reactor 3, carry out anaerobically fermenting, reclaim biogas energy and degradation of organic substances significantly; Second section is stripping denitrogenation section, and the percolate after the anaerobism passes through stripping tower 5 stripping ammonia nitrogens again through the suspended substance of Induced-draft air float machine 4 removal percolates; The 3rd section is the biochemical section of A/O-A/O, is continued to remove the organism and the ammonia nitrogen of percolate by A/O biological contact oxidation pond 6; "+1 " is nanofiltration advanced treatment section, carries out advanced treatment by nanofiltration advanced treatment apparatus 9, and bio-refractory organism and coliform are further removed.Guarantee that water outlet reaches the first discharge standard requirement of GB16889-1997 " consumer waste filling and embedding pollution control criterion " regulation.
" three-stage process+1 " handles the equipment of percolation liquid of city life garbage landfill, is linked in sequence by hybrid anaerobic reactor 3, Induced-draft air float machine 4, stripping tower 5, A/O contact-oxidation pool 6 and nanofiltration advanced treatment apparatus 9.Connect equalizing tank 1 and heat exchanger 2 before the above-mentioned hybrid anaerobic reactor.Above-mentioned A/O biological contact oxidation can adopt the secondary anaerobic series operation, the A/O contact-oxidation pool can change the aeration rate size, A/O biological contact oxidation pond bottom is communicated with gas blower 7, and the liquid outlet of A/O biological contact oxidation pond is connected with second pond 8, connects nanofiltration advanced treatment apparatus 9 behind the second pond.
" three-stage process+1 " technical data:
1 leachate quality condition
pH 5.8-8.0
COD
cr 6000-20000mg/L
SS ＜30000 mg/L
Ammonia nitrogen＜3000 mg/L
2 hybrid anaerobic reactors
33 ± 5 ℃ of controlled temperature
COD
CrLoad 4-8kgCOD
Cr/ m
3.d
COD
CrClearance 68-90%
SS clearance＞70%
Ammonia nitrogen removal frank 8-12%
Biogas generation 0.38-0.56m
3/ kgCOD
Cr
3 Induced-draft air float machines
Air supporting time 45min
Dosage PAC 0-300ppm
PAM 0-10ppm
SS clearance 56-90%
COD
CrClearance 8-30%
4 stripping towers
Filler draws two rings, Pall ring or cascade ring D=50mm
Packed height 5.5m-6.0m
The compound 4-6m of water distribution
3/ m
2.h
Temperature＞15 ℃
Water temperature＞15 ℃
pH 8.5-9.5
Water: gas 1: 2000
Ammonia nitrogen removal frank 53-71%
5 A/O-A/O contact-oxidation pools
Water temperature 16-28 ℃
pH ＜8.0
COD
cr ＜2000mg/L
Ammonia nitrogen＜400mg/L
COD
CrLoad 0.18-0.25kgCOD
Cr/ m
3.d
6 nanofiltration advanced treatment systems
Operating pressure＜0.7MPa
Water temperature＞10 ℃
Water inlet COD
Cr＜800mg/L water outlet＜100mg/L
Influent ammonia nitrogen＜30mg/L water outlet＜15mg/L
Claims (5)
1, a kind of technology of handling percolation liquid of city life garbage landfill is characterized in that: adds nanofiltration advanced treatment section by first section, second section, the 3rd section and is linked in sequence and forms,
First section is the composite anaerobic conversion zone, and percolate enters hybrid anaerobic reactor, carries out anaerobically fermenting, reclaims biogas energy and degradation of organic substances significantly;
Second section is stripping denitrogenation section, and the percolate after the anaerobism passes through stripping tower stripping ammonia nitrogen again through the suspended substance of Induced-draft air float machine removal percolate;
The 3rd section is the biochemical section of A/O-A/O, is continued to remove the organism and the ammonia nitrogen of percolate by the A/O biological contact oxidation pond;
Nanofiltration advanced treatment section: carry out advanced treatment by the nanofiltration advanced treatment apparatus, bio-refractory organism and coliform are further removed.
2, a kind of equipment of handling percolation liquid of city life garbage landfill is characterized in that: be linked in sequence by hybrid anaerobic reactor, Induced-draft air float machine, stripping tower, A/O contact-oxidation pool and nanofiltration advanced treatment apparatus.
3, the equipment of processing percolation liquid of city life garbage landfill according to claim 2 is characterized in that: connect equalizing tank and heat exchanger before the described hybrid anaerobic reactor.
4, the equipment of processing percolation liquid of city life garbage landfill according to claim 2 is characterized in that: described A/O biological contact oxidation pond bottom is communicated with gas blower, and the liquid outlet of A/O biological contact oxidation pond is connected with second pond.
5, the equipment of processing percolation liquid of city life garbage landfill according to claim 4 is characterized in that: connect the nanofiltration advanced treatment apparatus behind the described second pond.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031211615A CN1176034C (en) | 2003-03-28 | 2003-03-28 | Process and apparatus for urban refuse cite penetrating liquid by three stage plus one process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031211615A CN1176034C (en) | 2003-03-28 | 2003-03-28 | Process and apparatus for urban refuse cite penetrating liquid by three stage plus one process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1456521A CN1456521A (en) | 2003-11-19 |
| CN1176034C true CN1176034C (en) | 2004-11-17 |
Family
ID=29411600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031211615A Expired - Fee Related CN1176034C (en) | 2003-03-28 | 2003-03-28 | Process and apparatus for urban refuse cite penetrating liquid by three stage plus one process |
Country Status (1)
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100336749C (en) * | 2004-09-14 | 2007-09-12 | 北京大学 | Garbage percolation liquid treating system and method |
| CN1331780C (en) * | 2004-11-04 | 2007-08-15 | 中国科学院生态环境研究中心 | Integrative bioreactor for treating refuse leachate |
| CN100406399C (en) * | 2005-08-01 | 2008-07-30 | 陈昆柏 | Method and system for harnessing consumer waste landfill percolate |
| CN1329318C (en) * | 2005-09-14 | 2007-08-01 | 北京天地人环保科技有限公司 | Method for disposing refuse leachate of domestic refuse landfill |
| 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 |
| CN100478289C (en) * | 2007-07-13 | 2009-04-15 | 北京大学 | Method for treating medium and terminal garbage percolate |
| CN102295387B (en) * | 2011-07-27 | 2013-03-27 | 上海复旦水务工程技术有限公司 | Device and method for processing high-density landfill leachate |
| CN111847809A (en) * | 2019-12-30 | 2020-10-30 | 重庆大学 | Kitchen waste fermentation wastewater treatment device and method |
| 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 |
| CN116332396A (en) * | 2023-02-23 | 2023-06-27 | 上海环境卫生工程设计院有限公司 | Landfill leachate recycling treatment method |
-
2003
- 2003-03-28 CN CNB031211615A patent/CN1176034C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1456521A (en) | 2003-11-19 |
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Effective date of registration: 20090213 Address after: Beijing City, Haidian District Zizhuyuan Road No. 81 hospital 10 Mingdi A 303 Patentee after: Beijing Haili hi tech Environmental Protection Technology Co Ltd Address before: Lin tower, 132 Lianhua Road East, West Railway Station, Beijing Patentee before: Zhaolin Environment Technology Development Co., Beijing |
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Owner name: BEIJING HAILI GAOKE ENVIRONMENTAL PROTECTION TECHN Free format text: FORMER OWNER: BEIJING ZHAOLIN ENVIRONMENTAL TECHNOLOGICAL DEVELOPMENT CO. Effective date: 20090213 |
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Granted publication date: 20041117 Termination date: 20100328 |