CN101804411A - Method for controlling obnoxious gas of urban refuse landfill - Google Patents
Method for controlling obnoxious gas of urban refuse landfill Download PDFInfo
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- CN101804411A CN101804411A CN 201010116125 CN201010116125A CN101804411A CN 101804411 A CN101804411 A CN 101804411A CN 201010116125 CN201010116125 CN 201010116125 CN 201010116125 A CN201010116125 A CN 201010116125A CN 101804411 A CN101804411 A CN 101804411A
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- leachate
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Abstract
本发明公开了一种控制城市垃圾填埋场恶臭气体的方法，属于环境保护领域。它包括如下步骤：1)渗滤液的预处理：在反应器中填料配置有陈垃圾和多孔载体；顶部设置布水装置均匀布水；反应器上中部均匀分布有可调节的穿孔曝气装置；在有氧条件下，有机氮转化成为氨氮，氨氮转化成为硝酸盐氮；2)渗滤液预处理后的回灌：回灌过程选取适当的水力负荷和回灌频率，采用水力负荷在5-20mm/d，频率每天6-12次，根据季节和天气调整。通过本发明技术方案的实施，可使得填埋场恶臭气体排放得到有效控制，改善填埋场及周边地区空气环境状况。该技术简单易行，以废治废、经济环保、高效低耗，对填埋场臭气的控制具有实际应用价值。The invention discloses a method for controlling malodorous gas in urban garbage landfills, belonging to the field of environmental protection. It includes the following steps: 1) pretreatment of the leachate: the reactor is filled with old garbage and porous carriers; the top is equipped with a water distribution device for uniform water distribution; the upper and middle parts of the reactor are evenly distributed with adjustable perforated aeration devices; Under aerobic conditions, organic nitrogen is converted into ammonia nitrogen, and ammonia nitrogen is converted into nitrate nitrogen; 2) Recharge after leachate pretreatment: select appropriate hydraulic load and recharge frequency during the recharge process, and use a hydraulic load of 5-20mm /d, frequency 6-12 times a day, adjusted according to season and weather. Through the implementation of the technical scheme of the invention, the discharge of malodorous gas from the landfill can be effectively controlled, and the air environment conditions of the landfill and surrounding areas can be improved. The technology is simple and easy to implement, and it is economical, environmentally friendly, high-efficiency and low-consumption, and has practical application value for the control of landfill odor.
Description
Technical field
The invention discloses a kind of control method of foul gas, be specially a kind of method of controlling obnoxious gas of urban refuse landfill, belong to field of environment protection.
Background technology
Garbage sanitary filling is the main mode that the countries in the world urban garbage disposal is disposed, and also is the main trash processing way that still adopts in significant period of time from now in China.Rubbish can produce various secondary pollution materials in the landfill process, as percolate and exhaust emission etc.Often contain a large amount of foul gas pollutants in the waste gas that refuse landfill produces, its excitant is strong, and toxicity is big, and is serious to environment and health effects.China is along with rapid economy development, and refuse production increases rapidly.The refuse landfill in many cities, owing to reasons such as disposal ability and technical merits, still the pollutant of none tame landfill place discharging all reaches country and pollutes control criterion, it is (GB14554-93) more general that odorant pollutant hydrogen sulfide and ammonia isoconcentration index surpass " odorant pollutant comprehensive discharge standard ", and what have is above standard tens to twenties times.The foul smell problem day by day becomes the important environmental problem of disturbing the life of people's ordinary production.
Characteristics such as landfill obnoxious gas has that generation is big, longer duration, coverage are wide, traditional odor treatment method is used for the landfill yard ozone Control and has the cost height, the lasting and slow problem that takes effect.So in garbage loading embeading process and operational management, will eliminate stench from the source.Because the shortage of China's Sanitation Landfill Technology for Refuse experience, the stench control of refuse landfill is in urgent need to be improved with the improvement technology, is badly in need of seeking simple and effective ozone Control technology.
Summary of the invention
The objective of the invention is for a kind of method of controlling obnoxious gas of urban refuse landfill is provided, to solve the deficiencies in the prior art.
Purpose of the present invention can be achieved through the following technical solutions.
A kind of method of controlling obnoxious gas of urban refuse landfill, concrete steps are as follows:
1) preliminary treatment of percolate
Filler disposes stale garbage and porous carrier in reactor; The top is provided with the water-distributing device water distribution uniformity; The middle part is evenly distributed with adjustable boring aeration device on the reactor; Under aerobic conditions, organic nitrogen transforms into ammonia nitrogen, and ammonia nitrogen transforms into nitrate nitrogen;
2) percolate is pretreated recharges
The process of recharging is chosen suitable hydraulic load and is recharged frequency, adopts hydraulic load at 5-20mm/d, and frequency every day 6-12 time is according to season and weather adjustment.
The main chemical reactions that takes place in the reactor in the step 1) has:
Nitration reaction: NH
4 ++ 1.5O
2→ NO
2 -+ 2H
++ H
2O
NH
4 ++2O
2→NO
3 -+2H
++H
2O
Ammonia nitrogen in the reaction equation in the percolate by the nitrated nitrate that becomes, has acid to generate under the condition of aerobic simultaneously, and pH can reduce.
Step 2) in, the key reaction that takes place in the garbage loading embeading district after recharging is:
(1) anti-nitration reaction: 5C (organic C)+2H
2O+4NO
3 -→ 2N
2+ 4OH
-+ 5CO
2
NO
2 -+ 3H
+(electron donor organic matter) → 0.5N
2+ H
2O+OH
-
(2) sulphur oxidation reaction: 8NO
3 -+ 5HS
-+ 3H
+→ 5SO
4 2-+ 4N
2+ 4H
2O
(3) ammonia solubilizing reaction: NH
3+ H
+→ NH
4 +
Above-mentioned reaction can be with organic matter and sulphur oxidation, and the nitrate denitrification becomes nitrogen; The generation of removal of hydrogen sulfide and ammonia simultaneously reaches the purpose of deodorizing.
In step 1), the nitrogen of nitrate accounts for more than 90% of total nitrogen, promptly obtains required recharging and uses percolate.Whether open aerator by the index decision of measuring the nitrogen in the water outlet.
Described reactor is cylindrical or rectangle, and the heatable adobe sleeping platform of available concrete or employing watertight composition is built.The concrete size of reactor is determined according to the flow size that will handle percolate, mixed liquor effective hydraulic detention time therein was controlled at about 5-10 days.
By the enforcement of technical solution of the present invention, can make the landfill obnoxious gas discharging be effectively controlled, improve landfill yard and surrounding area air ambient situation, simultaneously the pollutant in the landfill percolate is degraded significantly, kill two birds with one stone.This technology is simple, and the treatment of wastes with processes of wastes against one another, economic environmental protection, efficient low-consume have actual application value to the control of landfill yard foul smell.
The specific embodiment
Further set forth technical characterstic of the present invention below in conjunction with specific embodiment.
The present invention through preliminary treatment outside the venue, after changing its character and forming, returns percolate landfill yard and recharges.Because the water quality behind the different preprocess methods has nothing in common with each other the influence that they are different to the aerogenesis situation to the influence of landfill layer.The stabilisation process of landfill yard be can quicken as the leachate recirculation after the Anaerobic Treatment, matrix condition and the tolerance that increases methane in the landfill layer improved; And recharge after the Aerobic Process for Treatment, can reduce foul smell tolerance simultaneously by removing nitrogen and the sulfide in rubbish and the percolate significantly.Composition and concentration that the pH of leachate quality changes for landfill waste product foul smell also can play inhibitory action.By suitable pretreated leachate recirculation, can play control effectively for the generation of landfill yard foul smell.
Percolate through water-distributing device, evenly is arranged into the surface of reactor in the pretreatment reaction device, flow in the biofilter that is made of stale garbage and porous filter-material.Percolate sewage relies on gravity to flow downward, and under the action of microorganisms therein, composition obtains changing.Through the aerobic microbiological effect, organic matter obtains degraded, and organic nitrogen is converted into inorganic ammonia nitrogen and nitrate nitrogen, can be by regulating aeration time and tolerance, the ratio of different shape nitrogen in the control water outlet.When wherein nitrate nitrogen accounts for more than 90% of total nitrogen, promptly obtain required recharging and use percolate.Whether open aerator by the index decision of measuring the nitrogen in the water outlet.
This pretreatment unit can be deodorizing and provides safeguard with the preliminary treatment of percolate, and the removal that also can be the percolate pollutant simultaneously provides a kind of efficient processing method.This reactor utilizes discarded object to make up the reactor that percolate is handled, and removes to can be used for providing the preconditioning technique of deodorizing with percolate, also can be used as the preconditioning technique of percolate, or forms combination techniques in conjunction with other technologies and reach advanced treating to percolate.
Reactor can be cylindrical or rectangle, and the heatable adobe sleeping platform of available concrete or employing watertight composition is built.The concrete size of reactor is determined according to the flow size that will handle percolate, mixed liquor effective hydraulic detention time therein was controlled at about 5-10 days.Reactor structure of the present invention is succinct, easy to operate, and operating cost is low, easily is automated control.
During nitrated later leachate recirculation landfill yard, the process of recharging is chosen suitable hydraulic load and is recharged frequency, adopts hydraulic load at 5-20mm/d, and frequency every day 6-12 time is according to season and weather adjustment.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010116125 CN101804411A (en) | 2010-03-02 | 2010-03-02 | Method for controlling obnoxious gas of urban refuse landfill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010116125 CN101804411A (en) | 2010-03-02 | 2010-03-02 | Method for controlling obnoxious gas of urban refuse landfill |
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| Publication Number | Publication Date |
|---|---|
| CN101804411A true CN101804411A (en) | 2010-08-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010116125 Pending CN101804411A (en) | 2010-03-02 | 2010-03-02 | Method for controlling obnoxious gas of urban refuse landfill |
Country Status (1)
| Country | Link |
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| CN (1) | CN101804411A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102416192A (en) * | 2011-09-30 | 2012-04-18 | 江苏大学 | Landfill air-cleaning system |
| CN104129852A (en) * | 2014-06-20 | 2014-11-05 | 浙江工商大学 | Method and reaction device for internal source reduction of H2S in landfill |
| CN112139211A (en) * | 2020-09-09 | 2020-12-29 | 深圳文科园林股份有限公司 | Garbage treatment method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2344815A (en) * | 1998-12-14 | 2000-06-21 | County Environmental Services | Landfill leachate treatment |
| US6398958B1 (en) * | 2000-03-08 | 2002-06-04 | Waste Management, Inc. | Facultative landfill bioreactor |
| CN101041537A (en) * | 2007-04-28 | 2007-09-26 | 黄继国 | Method for treating percolation liquid of water deficiency area garbage embedding field |
| CN101249988A (en) * | 2008-03-27 | 2008-08-27 | 清华大学 | A method and special device for treating landfill leachate |
| CN101613163A (en) * | 2009-07-30 | 2009-12-30 | 唐绍明 | Garbage leachate treatment process |
-
2010
- 2010-03-02 CN CN 201010116125 patent/CN101804411A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2344815A (en) * | 1998-12-14 | 2000-06-21 | County Environmental Services | Landfill leachate treatment |
| US6398958B1 (en) * | 2000-03-08 | 2002-06-04 | Waste Management, Inc. | Facultative landfill bioreactor |
| CN101041537A (en) * | 2007-04-28 | 2007-09-26 | 黄继国 | Method for treating percolation liquid of water deficiency area garbage embedding field |
| CN101249988A (en) * | 2008-03-27 | 2008-08-27 | 清华大学 | A method and special device for treating landfill leachate |
| CN101613163A (en) * | 2009-07-30 | 2009-12-30 | 唐绍明 | Garbage leachate treatment process |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102416192A (en) * | 2011-09-30 | 2012-04-18 | 江苏大学 | Landfill air-cleaning system |
| CN102416192B (en) * | 2011-09-30 | 2014-04-09 | 江苏大学 | Landfill air-cleaning system |
| CN104129852A (en) * | 2014-06-20 | 2014-11-05 | 浙江工商大学 | Method and reaction device for internal source reduction of H2S in landfill |
| CN112139211A (en) * | 2020-09-09 | 2020-12-29 | 深圳文科园林股份有限公司 | Garbage treatment method |
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Owner name: SHANGHAI ENVIRONMENTAL INDUSTRY CO., LTD. |
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Inventor after: Xie Bing Inventor after: Cui Yuxue Inventor after: Huang Huang Inventor after: Hu Chong Inventor after: Guo Guangzhai Inventor after: Chen Haoquan Inventor after: Pei Zhongyu Inventor before: Xie Bing |
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Effective date of registration: 20110603 Address after: 200062 Zhongshan North Road, Shanghai, No. 3663 Applicant after: East China Normal University Co-applicant after: Shanghai Environmental Industry Co.,Ltd. Address before: 200062 Zhongshan North Road, Shanghai, No. 3663 Applicant before: East China Normal University |
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Application publication date: 20100818 |