CN106430863A - Landfill leachate treatment method - Google Patents

Landfill leachate treatment method Download PDF

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Publication number
CN106430863A
CN106430863A CN201611173512.3A CN201611173512A CN106430863A CN 106430863 A CN106430863 A CN 106430863A CN 201611173512 A CN201611173512 A CN 201611173512A CN 106430863 A CN106430863 A CN 106430863A
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CN
China
Prior art keywords
treatment
leachate
garbage
garbage leachate
anaerobic
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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
Application number
CN201611173512.3A
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Chinese (zh)
Inventor
姚力智
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yixing Yigang Environmental Protection Engineering & Materials Co Ltd
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Yixing Yigang Environmental Protection Engineering & Materials Co Ltd
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Priority to CN201611173512.3A priority Critical patent/CN106430863A/en
Publication of CN106430863A publication Critical patent/CN106430863A/en
Pending legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/20—Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/30—Treatment of water, waste water, or sewage by irradiation
    • C02F1/302—Treatment of water, waste water, or sewage by irradiation with microwaves
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F2001/007—Processes including a sedimentation step
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/06—Contaminated groundwater or leachate
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00—General aspects of water treatment
    • C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/30—Aerobic and anaerobic processes

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  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)

Abstract

The invention relates to a sewage treatment method, in particular to a treatment method for landfill leachate generated in a refuse landfill. The landfill leachate treatment method comprises the steps of performing neutralization and sedimentation treatment on the leachate, then performing microwave treatment on the leachate, performing anaerobic and aerobic biological treatment on the leachate, performing microelectrolysis to further degrade residual macromolecules difficult to degrade, and then sequentially performing iron-carbon microelectrolysis, post-denitrification treatment and sedimentation separation emission. As macromolecule organism and heavy metal ions are remarkably removed before deep treatment in a treatment process, the treatment cost is reduced.

Description

Garbage percolation liquid treatment method
Technical field
The present invention relates to a kind of garbage leachate process side of the output of sewage water treatment method, specially refuse landfill Method.
Background technology
Leachate site produced by municipal refuse sanitary landfills disposal process is a kind of high concentration organic waste of complicated Water, containing large amount of organic, float, ammonia nitrogen, heavy metal ion and pathogenic bacterium etc., and as physics, chemistry, biology etc. are all Multifactor impact, water quality and quantity amplitude of variation is very big.
The domestic process to garbage leachate is usually employing mode anaerobism-aerobic treatment process, anaerobism-oxidation at present Ditch handling process, Activated Sludge Process and SBR method etc., with the raising of environmental protection standard, these handling process process Leachate site It is difficult to reach new discharge standard.And only relying on increase advanced treating so that processing cost steeply rises.
Content of the invention
For above-mentioned technical problem, present invention offer is a kind of can both to have caused Chinese effluent to reach high standard, while lowering The garbage percolation liquid treatment method of processing cost, specific method is：
Garbage percolation liquid treatment method, comprises the following steps：
（1）PH is adjusted, Leachate site calls in regulating reservoir by elevator pump, the balanced water yield is carried out, and in regulating reservoir, adds Calx to enter Row Acidity of Aikalinity is adjusted, and is adjusted to neutrality, and the sewage after neutralization is called in preliminary sedimentation tank again, carries out primary precipitation, the precipitate of primary Harmless treatment is carried out according to solid waste；
（2）Microwave treatment, the garbage leachate after just precipitating calls in the processing pond for being provided with microwave generator, uses frequency 2450Hz The microwave irradiation of power 300W 3 ~ 6 minutes；
（3）Deamination is processed, and garbage leachate importing ammonia-nitrogen stripping tower is carried out deamination reaction, and ammonia-contaminated gas are entered greatly through air channel Gas；Garbage leachate after deamination enters second pond, stops 0.5 ~ 1 hour and adds flocculant to be precipitated；
（4）Anaerobic treatment, garbage leachate imports anaerobic pond, carries out anaerobic nitrification process, and the macromole for decomposing in sewage is organic Thing, and remove part SS, COD；
（5）Aerobic Process for Treatment, the Leachate site after anaerobic treatment is entered type sequence intermittent activated sludge reactor carries out aerobic reaction 5 ~ 13 days；Using the Organic substance in the further oxidation Decomposition garbage leachate of aerobic microbiological；
（6）Iron-carbon micro-electrolysis are processed, and in the importing iron-carbon micro-electrolysis treatment reactor after Aerobic Process for Treatment, are added in garbage leachate Entering sulphuric acid and hydrogen peroxide, and carry out aeration carries out micro-electrolysis reaction, eliminates the organic macromolecule of bioanalysises difficult degradation；
（7）Denitrogenation processing afterwards, the garbage leachate that anaerobic treatment is crossed is entered in rear denitrification column, and provides hydrogen donor；Then enter Enter the pond that deaerates to be de-gassed；
（8）Precipitate and separate is discharged, and last Leachate site enters concentration basin and precipitated, and supernatant is vented back to regulating reservoir, the dirt of precipitation Mud waste residue enters pressure filter filter pressing, and pressing filtering liquid is vented back to regulating reservoir, and after filter pressing, sludge is used as fixed-end forces.
The garbage percolation liquid treatment method that the present invention is provided, will be pre- for garbage leachate advanced using microwave in preamble is processed Row is processed, and microwave carries out selectivity heating to material in sewage, has low-temperature catalyzed effect to inhaling ripple material；Can speed up in fluid Solid, liquid is separated；And sterilized.After anaerobic and aerobic biological treatment, one is entered to the macromole light electrolysis of remaining difficult degradation Step degraded, is processed through said process, and larger molecular organicses are compared than traditional method with heavy metal ion, are greatly lowered, Reduce processing cost.
Specific embodiment
It is described in conjunction with the embodiments the garbage percolation liquid treatment method specific implementation method of the present invention：
With certain urban refuse sanitary landfill garbage leachate as sample, its Leachate site 300m for producing3/ d, its water quality BOD5For 1218 mg/L, COD are 13750mg/L, NH3- N is 1520 mg/L, coli-group 1 × 105.
（1）PH being adjusted, Leachate site calls in regulating reservoir by elevator pump, the balanced water yield is carried out, and stone is added in regulating reservoir Ash carries out Acidity of Aikalinity adjustment, is adjusted to neutrality, and the sewage after neutralization is called in preliminary sedimentation tank again, is precipitated, 8 ~ 15 minutes anti- Should after precipitated, sedimentation time >=2 hour, precipitate is processed according to solid waste.
（2）Microwave treatment, the garbage leachate after just precipitating calls in the processing pond for being provided with microwave generator, uses frequency The microwave irradiation of 2450Hz power 300W 3 ~ 6 minutes.
（3）Deamination is processed, and garbage leachate importing ammonia-nitrogen stripping tower is carried out deamination reaction, and ammonia-contaminated gas are entered through air channel Air；Garbage leachate after deamination enters second pond, stops 0.5 ~ 1 hour and adds flocculant to be precipitated；
（4）Anaerobic treatment, garbage leachate imports anaerobic pond, carries out anaerobic nitrification process, temperature stabilization at 35 ~ 37 DEG C, load For 2 ~ 5kgCOD/ (m3D), 3 ~ 5d of the time of staying；Decompose the larger molecular organicses in sewage, and remove part SS, COD.
（5）Aerobic Process for Treatment, by the Leachate site after anaerobic treatment enter type sequence intermittent activated sludge reactor carry out aerobic Reaction 5 ~ 13 days；Reactor volume load is 0.1 ~ 0.18kgBOD/ (kgMLSS d), 0.02 ~ 0.05kgNH4+-N/ (kgMLSS d), using the Organic substance in the further oxidation Decomposition garbage leachate of aerobic microbiological.
（6）Iron-carbon micro-electrolysis are processed, in the importing iron-carbon micro-electrolysis treatment reactor after Aerobic Process for Treatment, to garbage leachate Middle addition sulphuric acid and hydrogen peroxide, and carry out aeration and carry out micro-electrolysis reaction, eliminate the organic macromolecule of bioanalysises difficult degradation；
Water quality BOD after light electrolysis5It is 200mg/L, NH for 40mg/L, COD3- N is 25 mg/L；Each pollutant in index Concentration be greatly reduced, alleviate successive depths process film burden.
（7）Denitrogenation processing afterwards, the garbage leachate that anaerobic treatment is crossed is entered in rear denitrification column, and provides hydrogen donor；So Enter degassing pond afterwards to be de-gassed；
（8）Precipitate and separate is discharged, and last Leachate site enters concentration basin and precipitated, and supernatant is vented back to regulating reservoir, the dirt of precipitation Mud waste residue enters pressure filter filter pressing, and pressing filtering liquid is vented back to regulating reservoir, and after filter pressing, sludge is used as fixed-end forces.
Water quality BOD of last water outlet5It is 50mg/L, NH for 12 mg/L, COD3- N is 8 mg/L, coli-group 35； Water quality can be with qualified discharge.

Claims (1)

1. garbage percolation liquid treatment method, it is characterised in that：Comprise the following steps：
（1）PH is adjusted, Leachate site calls in regulating reservoir by elevator pump, the balanced water yield is carried out, and in regulating reservoir, adds Calx to enter Row Acidity of Aikalinity is adjusted, and is adjusted to neutrality, and the sewage after neutralization is called in preliminary sedimentation tank again, carries out primary precipitation, the precipitate of primary Harmless treatment is carried out according to solid waste；
（2）Microwave treatment, the garbage leachate after just precipitating calls in the processing pond for being provided with microwave generator, uses frequency 2450Hz The microwave irradiation of power 300W 3 ~ 6 minutes；
（3）Deamination is processed, and garbage leachate importing ammonia-nitrogen stripping tower is carried out deamination reaction, and ammonia-contaminated gas are entered greatly through air channel Gas；Garbage leachate after deamination enters second pond, stops 0.5 ~ 1 hour and adds flocculant to be precipitated；
（4）Anaerobic treatment, garbage leachate imports anaerobic pond, carries out anaerobic nitrification process, and the macromole for decomposing in sewage is organic Thing, and remove part SS, COD；
（5）Aerobic Process for Treatment, the Leachate site after anaerobic treatment is entered type sequence intermittent activated sludge reactor carries out aerobic reaction 5 ~ 13 days；Using the Organic substance in the further oxidation Decomposition garbage leachate of aerobic microbiological；
（6）Iron-carbon micro-electrolysis are processed, and in the importing iron-carbon micro-electrolysis treatment reactor after Aerobic Process for Treatment, are added in garbage leachate Entering sulphuric acid and hydrogen peroxide, and carry out aeration carries out micro-electrolysis reaction, eliminates the organic macromolecule of bioanalysises difficult degradation；
（7）Denitrogenation processing afterwards, the garbage leachate that anaerobic treatment is crossed is entered in rear denitrification column, and provides hydrogen donor；Then enter Enter the pond that deaerates to be de-gassed；
（8）Precipitate and separate is discharged, and last Leachate site enters concentration basin and precipitated, and supernatant is vented back to regulating reservoir, the dirt of precipitation Mud waste residue enters pressure filter filter pressing, and pressing filtering liquid is vented back to regulating reservoir, and after filter pressing, sludge is used as fixed-end forces.
CN201611173512.3A 2016-12-19 2016-12-19 Landfill leachate treatment method Pending CN106430863A (en)

Priority Applications (1)

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Application Number Priority Date Filing Date Title
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108862813A (en) * 2017-05-12 2018-11-23 中国石油天然气股份有限公司 A kind of processing method of waste water
CN110240357A (en) * 2019-06-17 2019-09-17 重庆耐德环境技术有限公司 A kind of processing equipment and method of landfill leachate
CN113754151A (en) * 2021-10-27 2021-12-07 广东益诺欧环保股份有限公司 Method and system for pretreating landfill leachate

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101428938A (en) * 2008-12-04 2009-05-13 杨青淼 Treatment process for garbage leachate
CN102206022A (en) * 2011-05-05 2011-10-05 镇江维赛科技发展有限公司 Physicochemical biological ecological method of system applied to sewage advanced treatment
CN102786183A (en) * 2012-03-29 2012-11-21 波鹰(厦门)科技有限公司 Method for processing garbage leachate
CN104671613A (en) * 2015-02-28 2015-06-03 北京科益创新环境技术有限公司 Landfill leachate treatment technology
CN106219846A (en) * 2016-08-25 2016-12-14 四川深蓝环保科技有限公司 Percolate film-filter concentration liquid processing method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101428938A (en) * 2008-12-04 2009-05-13 杨青淼 Treatment process for garbage leachate
CN102206022A (en) * 2011-05-05 2011-10-05 镇江维赛科技发展有限公司 Physicochemical biological ecological method of system applied to sewage advanced treatment
CN102786183A (en) * 2012-03-29 2012-11-21 波鹰(厦门)科技有限公司 Method for processing garbage leachate
CN104671613A (en) * 2015-02-28 2015-06-03 北京科益创新环境技术有限公司 Landfill leachate treatment technology
CN106219846A (en) * 2016-08-25 2016-12-14 四川深蓝环保科技有限公司 Percolate film-filter concentration liquid processing method

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
岳秀: "垃圾渗滤液的预处理方法及其机理研究", 《工程科技Ⅰ辑》 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108862813A (en) * 2017-05-12 2018-11-23 中国石油天然气股份有限公司 A kind of processing method of waste water
CN108862813B (en) * 2017-05-12 2021-05-28 中国石油天然气股份有限公司 Wastewater treatment method
CN110240357A (en) * 2019-06-17 2019-09-17 重庆耐德环境技术有限公司 A kind of processing equipment and method of landfill leachate
CN113754151A (en) * 2021-10-27 2021-12-07 广东益诺欧环保股份有限公司 Method and system for pretreating landfill leachate

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Application publication date: 20170222

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