CN103936248A - Method for mixing garbage leachate and municipal sludge for anaerobic digestion biological treatment - Google Patents
Method for mixing garbage leachate and municipal sludge for anaerobic digestion biological treatment Download PDFInfo
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- CN103936248A CN103936248A CN201310022101.4A CN201310022101A CN103936248A CN 103936248 A CN103936248 A CN 103936248A CN 201310022101 A CN201310022101 A CN 201310022101A CN 103936248 A CN103936248 A CN 103936248A
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- municipal
- dewatered sludge
- sludge
- anaerobic digestion
- garbage leachate
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/20—Sludge processing
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Abstract
The invention discloses a method for mixing garbage leachate and municipal sludge for anaerobic digestion biological treatment, and the methos is characterized by comprising the following steps: taking municipal dewatered sludge with the moisture content of 70%-90%, municipal un-dewatered sludge with the moisture content of greater than or equal to 93%, and the garbage leachate for mixing with the volume ratio of municipal dewatered sludge to municipal un-dewatered sludge to garbage leachate of 10:10:0.5-7.5, the municipal dewatered sludge and the municipal un-dewatered sludge comprise 35%-50% of organic matter by mass, the ratio range of rho BOD(biochemical oxygen demand)5 to rho COD(chemical oxygen demand)Cr of the garbage leachate is 0.4 to 0.6; and the mixing is performed as the following order: first mixing the municipal dewatered sludge and the municipal un-dewatered sludge according to the volume ratio in a material allocation pool, then adding the garbage leachate according to the volume ratio in the material allocation pool, and performing anaerobic digestion treatment on the mixed material in the material allocation pool.
Description
Technical field
The present invention relates to a kind for the treatment of process of percolate, particularly a kind of percolate mixes the method for carrying out anaerobic digestion biological treatment with municipal sludge.
Background technology
Along with the raising of socioeconomic development and resident living level, the output of municipal wastes grows with each passing day, and therefore the disposal of municipal wastes also becomes a great problem of modern metropolitan cities.The mode of refuse treatment is at present mainly burning disposal and landfill disposal.And no matter adopt that processing mode, all can there is the generation of percolate.Percolate complicated component, contains multiple pollutant matter, and the component of municipal solid waste incinerator percolate and concentration depend primarily on the factor such as the residence time, climate condition of regional standard of living and custom, rubbish, are a kind of organic waste water of high density.If do not dealt carefully with, percolate will cause serious pollution to environment.Because water quality and the water yield of percolate change greatly, bring difficulty to processing and the utilization of resources simultaneously.
From the eighties in 20th century so far, China's municipal sewage treatment cause has obtained jumping characteristic development, the emphasis of this sewage disposal in period cause mainly concentrates in the construction of municipal wastewater treatment plant, the problem of sludge disposal is not yet appeared suddenly.Simultaneously, in sewage treatment project, fail sludge treatment to dispose and carry out detailed planning and design, cause each department to be subject to the restriction of the conditions such as understanding, fund, technology, soil, aspect sludge disposal, still receive as main taking farmland utilization and stacking pin, in mud, contain heavy metal, for fear of pollution problems such as heavy metals, on agricultural use, can be restricted.Enter after 21 century, along with the aggravation of urban development and environmental pollution, the construction of China's urban wastewater treatment firm starts accelerated development.Large amount of sewage treatment plant puts into operation, produces a large amount of mud every day, and therefore sludge disposal problem is extremely urgent.
Moisture percentage in sewage sludge is high, and nearly more than 80%, this part shipwreck to be to burn, and transportation cost is increased, and when stacking, floor space increases.Microorganism in mud, pathogenic agent content are high, do not add processing, directly use or throw aside, and can work the mischief to environment.Mud contaminate environment is discharged a large amount of greenhouse gases simultaneously, simultaneously containing heavy metal, controls and uses or enter food chain, entail dangers to HUMAN HEALTH if do not add.
In sum, need now one can deal carefully with and utilize garbage leaching liquid, the method that can process municipal sludge simultaneously.
Summary of the invention
The present invention is in order to solve the existing above-mentioned deficiency of prior art, proposes one and utilizes refuse leachate and municipal sludge as raw material, produces the method for inflammable gas by anaerobe digestion process.
Technical solution of the present invention is: a kind of percolate mixes the method for carrying out anaerobic digestion biological treatment with municipal sludge, it is characterized in that: described method comprises the following steps:
A, get the municipal dewatered sludge that water ratio is 70%-90%, not dewatered sludge and the refuse leachate of municipal administration of water ratio >=93%, carry out mixture than refuse leachate=10 to 10 than the volume ratio of 0.5-7.5 than municipal not dewatered sludge according to municipal dewatered sludge, wherein in municipal dewatered sludge and municipal not dewatered sludge, organic mass content is 35%-50%, the ρ BOD5 of refuse leachate and ρ CODCr ratio range are 0.4-0.6
The order of b, mixture is in materials allocating pond, first to carry out the mixing of municipal not dewatered sludge and municipal dewatered sludge according to aforementioned proportion, then in materials allocating pond, adds refuse leachate according to aforementioned proportion,
C, the material mixing in materials allocating pond is carried out to Anaerobic Digestion.
Compared with the existing technology, tool has the following advantages in the present invention:
In conventional processes, treating refuse percolate and municipal sludge are two complete incoherent processing steps, need to use support equipment and method separately to carry out respectively, have improved cost, and have had certain difficulty.And the treatment process of refuse leachate provided by the present invention and municipal sludge, can utilize the municipal sludge that produces in refuse leachate that destructor plant produces and municipal wastewater treating processes effectively, simultaneously, by Anaerobic Digestion, obtain inflammable gas.The advantages such as this method has balance and stability material, sets up the optimum complementation of nutrition, suitability is wide, energy-conserving and environment-protective, energy utilization rate are high, developing new forms of energy, for the processing of refuse leachate and municipal sludge has proposed new thinking, can either effectively process the harmful side product in urban life, have simultaneously and utilize these by products to carry out the generation of useful inflammable gas, kill two birds with one stone, reduce costs.After Anaerobic Digestion process, the Digestive system of generation can be processed by conventional sewage disposal means easily simultaneously.Therefore this method has possessed multiple advantage, is particularly suitable for applying in the art, and its market outlook are very wide.
Embodiment
The specific embodiment of the present invention will be described below.
A kind of percolate mixes the method for carrying out anaerobic digestion biological treatment with municipal sludge, the method comprises the following steps: first get volume parts and be 10 municipal dewatered sludge, municipal administration that volume parts is 10 three kinds of starting material of refuse leachate that dewatered sludge and volume parts are not 0.45, by municipal dewatered sludge and municipal administration not dewatered sludge put into materials allocating pond and mix, and then refuse leachate is put into materials allocating pond, and abundant mixed mixture is carried out to Anaerobic Digestion, obtain inflammable gas.
The water ratio of above-mentioned municipal dewatered sludge is 83%, the municipal administration not water ratio of dewatered sludge is 94%, in municipal dewatered sludge and municipal not dewatered sludge, organic mass content is 45% simultaneously, and in above-mentioned refuse leachate, ρ BOD5 is 0.5 than the value of ρ CODCr.
Utilize method of the present invention, can, by percolate and municipal sludge as raw material, under the condition of Anaerobic Digestion, produce flammable biomass gas.Actual measurement associating anaerobic reaction gas production rate is 30～40Nm
3/ ton, than the many 5～6Nm of independent sludge reaction ton gas production rate
3/ ton, visible trophic structure is more reasonable, and reaction process is more stable, can obtain better anaerobic digestion effect, can obtain again the output of considerable biological fuel gas.
Claims (1)
1. percolate mixes a method of carrying out anaerobic digestion biological treatment with municipal sludge, it is characterized in that: described method comprises the following steps:
A, get the municipal dewatered sludge that water ratio is 70%-90%, not dewatered sludge and the refuse leachate of municipal administration of water ratio >=93%, carry out mixture than refuse leachate=10 to 10 than the volume ratio of 0.5-7.5 than municipal not dewatered sludge according to municipal dewatered sludge, wherein in municipal dewatered sludge and municipal not dewatered sludge, organic mass content is 35%-50%, the ρ BOD5 of refuse leachate and ρ CODCr ratio range are 0.4-0.6
The order of b, mixture is in materials allocating pond, first to carry out the mixing of municipal not dewatered sludge and municipal dewatered sludge according to aforementioned proportion, then in materials allocating pond, adds refuse leachate according to aforementioned proportion,
C, the material mixing in materials allocating pond is carried out to Anaerobic Digestion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310022101.4A CN103936248B (en) | 2013-01-22 | 2013-01-22 | Percolate mixes the method carrying out anaerobic digestion biological treatment with municipal sludge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310022101.4A CN103936248B (en) | 2013-01-22 | 2013-01-22 | Percolate mixes the method carrying out anaerobic digestion biological treatment with municipal sludge |
Publications (2)
| Publication Number | Publication Date |
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| CN103936248A true CN103936248A (en) | 2014-07-23 |
| CN103936248B CN103936248B (en) | 2016-06-29 |
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| CN201310022101.4A Active CN103936248B (en) | 2013-01-22 | 2013-01-22 | Percolate mixes the method carrying out anaerobic digestion biological treatment with municipal sludge |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112094013A (en) * | 2020-09-14 | 2020-12-18 | 江苏泓润生物质能科技有限公司 | Municipal sludge co-processing method |
| CN113060918A (en) * | 2021-03-29 | 2021-07-02 | 重庆大学 | Method for zero-valent iron reinforcement of synergistic anaerobic digestion of excess sludge and landfill leachate |
-
2013
- 2013-01-22 CN CN201310022101.4A patent/CN103936248B/en active Active
Non-Patent Citations (2)
| Title |
|---|
| A. MONTUSIEWICZ ET AL: "Co-digestion of intermediate landfill leachate and sewage sludge as a method of leachate utilization", 《BIORESOURCE TECHNOLOGY》 * |
| 王涛等: "垃圾渗滤液与厨余垃圾混合厌氧消化研究", 《环境科技》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112094013A (en) * | 2020-09-14 | 2020-12-18 | 江苏泓润生物质能科技有限公司 | Municipal sludge co-processing method |
| CN113060918A (en) * | 2021-03-29 | 2021-07-02 | 重庆大学 | Method for zero-valent iron reinforcement of synergistic anaerobic digestion of excess sludge and landfill leachate |
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| Publication number | Publication date |
|---|---|
| CN103936248B (en) | 2016-06-29 |
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