CN101671095B - Garbage leachate treatment technique - Google Patents
Garbage leachate treatment technique Download PDFInfo
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- CN101671095B CN101671095B CN2009101904303A CN200910190430A CN101671095B CN 101671095 B CN101671095 B CN 101671095B CN 2009101904303 A CN2009101904303 A CN 2009101904303A CN 200910190430 A CN200910190430 A CN 200910190430A CN 101671095 B CN101671095 B CN 101671095B
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Abstract
The invention discloses a garbage leachate treatment technique, comprising: homogenizing the water quality of garbage leachate by an adjusting tank, and then leading the garbage leachate to enter a coagulative precipitation tank; then, alkalifying and deaminizing, and lifting into a UASB+AF tank through pump; after that, removing a great deal of organic matter, and leading the effluent to enter a packed A/O tank together with the sewage processed by the original sewage plant; removing the organic matter and the ammonia nitrogen which are difficult to degrade, and then passing through a secondary sedimentation tank and entering an advanced oxidation system for deep oxidation; leading the effluent to enter a biological aerated filter, processing by a sand filtering system and then entering a membrane processing system; and finally, ensuring the water quality of the effluent to be stable and reach the standard. As the garbage leachate treatment technique adopts the technology of 'biochemistry+ physical chemistry+ membrane separation' to treat the leachate, the effluent can reach the first grade discharge standard (GB16889-1997).
Description
Technical field
The present invention relates to sewage treatment process, especially relate to a kind of technology that percolate is adopted " biochemistry+materialization+membrane sepn " technical finesse.
Background technology
Percolate is the secondary pollutant that the refuse treatment process produces, and has been the most important source of pollution of underground water.The main source of percolate has water, the infiltration of surface water, the reverse osmosis of underground latent water, the Atmospheric precipitation that rubbish self is moisture, the refuse biochemical reaction produces.Because the source of percolate makes the water quality of percolate have the different features with municipal effluent institute: water quality is complicated, organic concentration is high, metal content is high, change of water quality is big, ammonia-nitrogen content is high, nutritive element (mainly being the out of proportion of C, N, P) out of proportion.
After 2000, because rapid development of economy, newly-built percolate treatment plant is generally away from the city, and percolate does not have condition to enter municipal sewage pipe network, so the yet corresponding raising of processing requirements, generally need handle secondary even first discharge standard.The refuse landfill initial operating stage; The slaking of not fermenting as yet of most of rubbish; The moisture that the while new refuse carries is more, so the COD of percolate is higher, has biodegradability ability preferably; Can adopt biological process to carry out the processing of percolate, like UASB anaerobic technique, ASBR anaerobic technique, SBR aerobic process and A
2Anaerobic-aerobic combination procesies such as O technology etc.Along with the operation of refuse landfill, the rubbish of landfill ferment gradually, slaking, biodegradable material is by mass consumption, the COD value of percolate descends, biodegradability also reduces simultaneously, the suitability of biochemical treatment weakens, and is even unfeasible.Therefore adopt simple biochemical processing process to be difficult to reach emission standard.
Summary of the invention
The present invention is directed to above problem, adopted " biochemistry+materialization+membrane sepn " Technology treating refuse percolate that a kind of stable effluent quality, running cost are low, be convenient to operational administrative.
The objective of the invention is to realize like this: a kind of garbage leachate treatment process, adopt following steps: percolate carries out water quality homogenizing, water yield adjusting through equalizing tank; Percolate after regulating through equalizing tank adds flocculation agent and gets into coagulative precipitation tank, to remove most of SS and portion C OD; Percolate entering through post precipitation adds the alkali reaction jar, regulates between pH to 11～12 through adding alkali; Percolate gets into Ammonia blowing-out tower after regulating pH to 11-12, to remove the ammonia nitrogen of high density, satisfy follow-up biochemical needs; Behind the ammonia stripping, percolate gets into neutralization tank, adds between acid for adjusting pH to 6～8; After the neutralization, percolate is promoted to the UASB+AF pond through pump, removes most of organism wherein, to reduce the load of follow-up aerobic treatment; After the reaction of UASB+AF pond, the sewage after percolate is managed with raw waste water factory and office again gets into material filling type A/O pond jointly, to remove the organism and the ammonia nitrogen of difficult degradation; After the reaction of material filling type A/O pond, percolate gets into second pond; Percolate gets into the advanced oxidation system again after the second pond water outlet, carry out deep oxidation, improves the biodegradability of sewage; Percolate gets into BAF again, further removes the pollutents such as COD in the sewage; Percolate carries out sand filtration again after BAF is handled, suspended impurity in the trap water, further remove percolate COD, reduce colourity; After the sand filtration system handles, last percolate gets into film processing system and discharges treating water up to standard.
The said flocculation agent that adds is to add flocculation agent in the pipeline between equalizing tank and coagulative precipitation tank.
Described alkali is any one in milk of lime, sodium hydroxide, yellow soda ash or other inorganic base substance.
Described acid is hydrochloric acid, sulfuric acid, nitric acid, phosphoric acid or any one in the strong acid in other.
The biogas that said UASB+AF pond internal reaction is produced carries out direct burn processing.
Said A/O pond internal reaction, the high-efficiency aerobic bio membrane treatment of the combination of employing aerobic activated sludge process and biomembrance process.
The oxygenant of said oxidation system is an ozone.
Said film biological treatment system comprises that ultrafiltration, security personnel filter, reverse osmosis process, and backwashing water is handled with former percolate.
The present invention is owing to adopted above-mentioned " biochemistry+materialization+membrane sepn " Technology treating refuse percolate; The biochemical treatment process can be degraded effectively, removal of pollutants; The membrane sepn treating processes can be separated effectively and removed the not amounts of residual contamination do of bio-degradable; The final stable effluent quality that guarantees can reach (GB16889-1997) first discharge standard.
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 garbage leachate treatment process, adopt following steps:
(1) percolate carries out water quality homogenizing, water yield adjusting through equalizing tank;
(2) in the pipeline between equalizing tank and coagulative precipitation tank percolate is added flocculation agent, then percolate gets into coagulative precipitation tank, to remove most of SS and portion C OD;
(3) the percolate entering through post precipitation adds the alkali reaction jar, makes its PH to 11.5～12 through adding lime milk solution;
(4) percolate gets into Ammonia blowing-out tower after regulating pH to 11.5～12, to remove the ammonia nitrogen of high density, to satisfy follow-up biochemical needs;
(5) behind the ammonia stripping, percolate gets into neutralization tank, adds hydrochloric acid and regulates between pH to 6.5～7.5;
(6) after the neutralization, percolate is promoted to the UASB+AF pond through pump, removes most of organism wherein, and the biogas that its reaction is produced carries out direct burn processing, to reduce the load of follow-up aerobic treatment;
(7) after the reaction of UASB+AF pond, the sewage after percolate is managed with raw waste water factory and office again gets into material filling type A/O pond jointly, to remove the organism and the ammonia nitrogen of difficult degradation;
(8) percolate gets into second pond after the high-efficiency aerobic bio membrane treatment reaction of the combination of employing aerobic activated sludge process and biomembrance process in material filling type A/O pond;
(9) percolate gets into after the second pond water outlet again and uses the oxidation system of ozone as oxygenant, carries out deep oxidation, improves the biodegradability of sewage;
(10) percolate gets into BAF again, further removes the pollutents such as COD in the sewage;
(11) percolate carries out sand filtration again after BAF is handled, suspended impurity in the trap water, further remove percolate COD, reduce colourity;
(12) after the sand filtration system handles, last percolate is through ultrafiltration, security personnel's filtration, reverse osmosis process, and backwashing water is handled with former percolate, and discharges treating water up to standard.
Claims (7)
1. garbage leachate treatment process is characterized in that adopting following steps:
(1) percolate carries out water quality homogenizing, water yield adjusting through equalizing tank;
(2) add flocculation agent and get into coagulative precipitation tank toward the percolate after the equalizing tank adjusting, to remove most of SS and portion C OD;
(3) the percolate entering through post precipitation adds the alkali reaction jar, through adding between any one adjusting pH to 11～12 in milk of lime, sodium hydroxide, yellow soda ash or other inorganic base substance;
(4) percolate gets into Ammonia blowing-out tower after regulating pH to 11-12, to remove the ammonia nitrogen of high density, satisfies follow-up biochemical needs;
(5) behind the ammonia stripping, percolate gets into neutralization tank, adds between acid for adjusting pH to 6～8;
(6) after the neutralization, percolate is promoted to the UASB+AF pond through pump, removes most of organism wherein, to reduce the load of follow-up aerobic treatment;
(7) after the reaction of UASB+AF pond, the sewage after percolate is managed with raw waste water factory and office again gets into material filling type A/O pond jointly, to remove the organism and the ammonia nitrogen of difficult degradation;
(8) after the reaction of material filling type A/O pond, percolate gets into second pond;
(9) percolate gets into oxidation system again after the second pond water outlet, carries out deep oxidation, improves the biodegradability of sewage;
(10) percolate gets into BAF again, further removes the COD pollutent in the sewage;
(11) percolate carries out sand filtration again after BAF is handled, suspended impurity in the trap water, further remove percolate COD, reduce colourity;
(12) after the sand filtration system handles, last percolate gets into film processing system and discharges treating water up to standard.
2. garbage leachate treatment process as claimed in claim 1 is characterized in that: the said flocculation agent that adds is to add flocculation agent in the pipeline between equalizing tank and coagulative precipitation tank.
3. garbage leachate treatment process as claimed in claim 1 is characterized in that: described acid is any one in hydrochloric acid, sulfuric acid, nitric acid or the phosphoric acid.
4. garbage leachate treatment process as claimed in claim 1 is characterized in that: the biogas that said UASB+AF pond internal reaction is produced carries out direct burn processing.
5. garbage leachate treatment process as claimed in claim 1 is characterized in that: said A/O pond internal reaction, the high-efficiency aerobic bio membrane treatment of the combination of employing aerobic activated sludge process and biomembrance process.
6. garbage leachate treatment process as claimed in claim 1 is characterized in that: the oxygenant of said oxidation system is an ozone.
7. garbage leachate treatment process as claimed in claim 1 is characterized in that: said film processing system comprises that ultrafiltration, security personnel filter, reverse osmosis process, and backwashing water is handled with former percolate.
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| CN2009101904303A CN101671095B (en) | 2009-09-11 | 2009-09-11 | Garbage leachate treatment technique |
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| CN2009101904303A CN101671095B (en) | 2009-09-11 | 2009-09-11 | Garbage leachate treatment technique |
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| CN101671095B true CN101671095B (en) | 2012-01-25 |
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| CN101948215B (en) * | 2010-08-31 | 2012-05-30 | 宇星科技发展(深圳)有限公司 | Garbage leachate treatment process |
| CN101967031B (en) * | 2010-10-20 | 2012-09-26 | 江苏兆盛环保集团有限公司 | Garbage percolate treatment method |
| CN102079610B (en) * | 2010-12-03 | 2015-06-10 | 陆炎培 | Technology for biochemical treatment and comprehensive utilization of mixture of household garbage percolate and high-concentration organic wastewater |
| CN103130378B (en) * | 2011-11-24 | 2014-03-26 | 马志文 | System for treating household garbage leachate |
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| CN102531284B (en) * | 2011-12-30 | 2013-07-03 | 无锡惠联垃圾热电有限公司 | Technology for treating rubbish percolate |
| CN102583908B (en) * | 2012-03-22 | 2013-09-04 | 南京工业大学 | Landfill leachate treatment process |
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| CN104418465A (en) * | 2013-09-03 | 2015-03-18 | 上海御隆膜分离设备有限公司 | Landfill leachate treatment method and equipment |
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| CN103787554B (en) * | 2014-02-13 | 2015-04-01 | 上海理工大学 | Process for treating landfill leachate |
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| CN110316886A (en) * | 2019-06-24 | 2019-10-11 | 湖北百清环保技术有限公司 | A kind of garbage percolation liquid treating system and method |
| CN110526503A (en) * | 2019-08-30 | 2019-12-03 | 南宁师范大学 | A kind of transfer station Leachate site pretreating process based on micro- aerobic and microalgae |
| CN110563265A (en) * | 2019-09-10 | 2019-12-13 | 贵州欧瑞欣合环保股份有限公司 | Landfill leachate treatment process |
| CN111285554B (en) * | 2020-03-21 | 2022-08-12 | 云南兴滇实业有限公司 | Method for deep purification treatment of landfill leachate |
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| CN113003882A (en) * | 2021-03-10 | 2021-06-22 | 江苏瑞达环保科技有限公司 | Treatment process of high-ammonia nitrogen high-salt landfill leachate |
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