CN102786194A - Method for treating sludge through aerobic fermentation at high temperature - Google Patents
Method for treating sludge through aerobic fermentation at high temperature Download PDFInfo
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- CN102786194A CN102786194A CN201110127200XA CN201110127200A CN102786194A CN 102786194 A CN102786194 A CN 102786194A CN 201110127200X A CN201110127200X A CN 201110127200XA CN 201110127200 A CN201110127200 A CN 201110127200A CN 102786194 A CN102786194 A CN 102786194A
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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
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
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Abstract
The invention relates to a method for treating sludge through aerobic fermentation at a high temperature. The method comprises the following steps: introducing dehydrated sludge into a dehydrated sludge tank, allowing the dehydrated sludge to enter a mixing and fragmenting device through a quantitative charging device, fragmenting, uniformly spreading the resultant material with a spreader, introducing the material into a fermentation device, and fermenting twice to complete the sludge treatment. Compared with the prior art, the method disclosed in the invention, which adopts a whole set of a mechanical apparatus, utilizes a fermented clinker as an auxiliary material, and adopts a ventilation and oxygen supply system and a ventilation and oxygen supply operation method to treat the dehydrated sludge from middle and small town sewage plants, is feasible, and simultaneously the method has the advantages of investment saving, low treatment cost, no odorous gas, no leachate, substantial amount reduction, stabilization and full harmlessness, provides very good conditions for the resource utilization, and completely accords with current standard provisions.
Description
Technical field
The present invention relates to the environmental protection field, especially relate to a kind of high-temperature aerobic fermentation sludge treatment method.
Background technology
Carrying out strict environment protection system is a fundamental state policy of China, and environment protection is extremely urgent.In the primary stage of reform and opening-up, Economic development, because the deficiency on the understanding, the physical environment of China has suffered very big destruction, to influence that people are healthy, the severity that further develops of obstruction economy.Wherein, Water environment degradation is an important aspect, and in economically developed area, river course, reservoir, lake, underground water all receive pollution in various degree; And source of pollution; Especially the point-source pollution of factory, a large amount of unprocessed or handle halfway sewage and be discharged, be the major reason of water environment degradation.Present stage, cause the exceed standard reason of sewage effluent of enterprise to have: 1, insufficient recognition; 2, sewage contains complicated ingredient, and the prior art means are difficult to handle; 3, present treatment process is to adopt physical filtering or chemical reaction method mostly, and not only processing costs is high, and discharging still can not be up to standard, therefore caused serious consequence, and therefore, the research work of strengthening WWT is very urgent.
Table 1 is the composition of pollutent in detected two kinds of waste water.
Table 1
For the processing of mud, general employing high-temperature aerobic fermentation (compost) is handled now, but there is following difficult point in this method in the through engineering approaches actual motion: a large amount of subsidiary material of (1) needs; (2) insufficient, the frowziness of aerobic fermentation, influence environment; (3) energy consumption is big.Therefore need to select a kind of method for sludge treatment more convenient, that cost is lower that uses.
Summary of the invention
The object of the invention is exactly for the defective that overcomes above-mentioned prior art existence low, the no foul smell of a kind of processing cost, no percolate, the significant high-temperature aerobic fermentation sludge treatment method of minimizing to be provided.
The object of the invention can be realized through following technical scheme:
A kind of high-temperature aerobic fermentation sludge treatment method; It is characterized in that; This method comprises: dewatered sludge is imported in the dewatered sludge hopper, get into through dosed equipment and mix in the shredder assembly, after the material distributing machine uniform distribution is adopted in broken back; Handle carrying out fermenting twice in its importing fermentation unit, promptly accomplish processing mud.
Described dewatered sludge can add wood chip or straw powder.
Described mixing shredder assembly with the dewatered sludge grain breakage to particle diameter≤20mm.
During described fermenting twice was handled, the temperature of fermentative processing was 70-75 ℃ for the first time, and fermentation time is 12-14 days; The fermentative processing temperature is about 35-50 ℃ for the second time, and fermentation time is 8-12 days.。
Described first time, fermentative processing comprised that also the ventilation oxygen supply handles.
Fermentative processing comprised also that turning is ventilated and handled described second time.
The product that described fermenting twice obtains after handling can also return as the combined aggregate utilization as grog, and this combined aggregate is back in the auxiliary material hopper through e Foerderanlage, or is directed into and covers feed back in the material distributing machine.
Combined aggregate in the described auxiliary material hopper imports through dosed equipment and mixes in the shredder assembly.
Compared with prior art, the present invention adopts complete machinery, equipment (mixing crusher, dosed equipment; Apparatus for distributing); And the grog after the utilization fermentation adopts the system and the operational mode of ventilation oxygen supply as auxiliary material, and the dewatered sludge of handling middle-size and small-size town sewage plant is feasible; It is remarkable to have reduced investment, low, the no foul smell of processing cost, no percolate, minimizing simultaneously; Stabilization, innoxious abundant, and for recycling provides fine condition, and meet existing standard code fully.
Description of drawings
Fig. 1 is a process flow diagram of the present invention.
1 is that dewatered sludge hopper, 2 is that mixing shredder assembly, 3 is that auxiliary material hopper, 4 is that dosed equipment, 5 is that material distributing machine, 6 is that fermentation unit, 61 is that one time fermentation equipment, 62 is Secondary Fermentation equipment among the figure.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the present invention is elaborated.
Embodiment
A kind of high-temperature aerobic fermentation sludge treatment method; Its technical process is as shown in Figure 1; The sludge treating system that uses comprises dewatered sludge hopper 1, mixes shredder assembly 2, auxiliary material hopper 3, dosed equipment 4, material distributing machine 5 and fermentation unit 6; Dewatered sludge hopper 1 is connected with mixing shredder assembly 2 through dosed equipment 4 with auxiliary material hopper 3, and this dosed equipment 4 is made up of charging mixing device and conveying belt, and material distributing machine 5 is automatic stone equipment; Mix shredder assembly 2 and be connected with an end of fermentation unit 6 through material distributing machine 5, the other end of fermentation unit 6 is connected with material distributing machine 5 and auxiliary material hopper 3 through e Foerderanlage.In fermentation unit 6, be provided with one time fermentation equipment 61 and Secondary Fermentation equipment 62, offer the pore of ventilation oxygen supply on the one time fermentation equipment 61, Secondary Fermentation equipment 62 is provided with the turning ventilation installation.When handling mud dewatered sludge is imported in the dewatered sludge hopper 1, when starting, add wood chip, auxiliary materials such as straw powder get into auxiliary material hopper 3 with a small amount of bacterial classification as adding auxiliary material; Get in the mixing shredder assembly 2 through dosed equipment 4, to particle diameter≤20mm, broken back adopts material distributing machine 5 to carry out uniform distribution with the dewatered sludge grain breakage; Guarantee stone homogeneity, ventilation property, get into then in the fermentation unit 6, utilize one time fermentation equipment 61 and Secondary Fermentation equipment 62 to carry out fermentative processing; The one time fermentation treatment temp is 70-75 ℃; Fermentation time is 12-14 days, and leavening temperature is 70 ℃ in the present embodiment, and fermentation time is 14 days; The Secondary Fermentation treatment temp is about 35-50 ℃, and fermentation time is 8-12 days, and leavening temperature is 40 ℃ in the present embodiment, and fermentation time is 10 days.The oxygen supply of in one time fermentation equipment 61, ventilating is handled; Carrying out the turning ventilation in the Secondary Fermentation equipment 62 handles; The product that fermentation obtains is collected in the warehouse, and wherein a part of grog returns as the combined aggregate utilization, guarantees that fermentation does not rely on the external source auxiliary material; This partially mixed aggregate is back in the auxiliary material hopper 3 through e Foerderanlage, or is directed in the material distributing machine 5 and covers feed back.
Claims (8)
1. high-temperature aerobic fermentation sludge treatment method; It is characterized in that; This method comprises: dewatered sludge is imported in the dewatered sludge hopper, get into through dosed equipment and mix in the shredder assembly, after the material distributing machine uniform distribution is adopted in broken back; Handle carrying out fermenting twice in its importing fermentation unit, promptly accomplish processing mud.
2. a kind of high-temperature aerobic fermentation sludge treatment method according to claim 1 is characterized in that described dewatered sludge can add wood chip or straw powder.
3. a kind of high-temperature aerobic fermentation sludge treatment method according to claim 1 is characterized in that, described mixing shredder assembly with the dewatered sludge grain breakage to particle diameter≤20mm.
4. a kind of high-temperature aerobic fermentation sludge treatment method according to claim 1 is characterized in that, during described fermenting twice was handled, the temperature of fermentative processing was 70-75 ℃ for the first time, and fermentation time is 12-14 days; The fermentative processing temperature is about 35-50 ℃ for the second time, and fermentation time is 8-12 days.
5. a kind of high-temperature aerobic fermentation sludge treatment method according to claim 4 is characterized in that, described first time, fermentative processing comprised that also the ventilation oxygen supply handles.
6. a kind of high-temperature aerobic fermentation sludge treatment method according to claim 4 is characterized in that, fermentative processing comprised also that turning is ventilated and handled described second time.
7. a kind of high-temperature aerobic fermentation sludge treatment method according to claim 1; It is characterized in that; The product that described fermenting twice obtains after handling can also return as the combined aggregate utilization as grog; This combined aggregate is back in the auxiliary material hopper through e Foerderanlage, or is directed into and covers feed back in the material distributing machine.
8. a kind of high-temperature aerobic fermentation sludge treatment method according to claim 7 is characterized in that, the combined aggregate in the described auxiliary material hopper imports through dosed equipment and mixes in the shredder assembly.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103232271A (en) * | 2013-04-20 | 2013-08-07 | 普洱茗上品茶业有限公司 | Dedicated organic fertilizer for tea trees and production method of fertilizer |
| CN103272829A (en) * | 2013-06-03 | 2013-09-04 | 邓锦新 | Urban living garbage treatment method |
| CN104961585A (en) * | 2015-07-06 | 2015-10-07 | 华中农业大学 | Method for producing functional microbial fertilizer by two-step fermentation and application of functional microbial fertilizer |
| CN105036834A (en) * | 2015-09-02 | 2015-11-11 | 张岩 | Organic waste and animal excrement harmless treatment method |
| CN106746428A (en) * | 2017-01-22 | 2017-05-31 | 山东汇盛天泽环境工程有限公司 | A kind of high-temperature aerobic fermentation method for sludge treatment and device |
| CN107353043A (en) * | 2016-12-07 | 2017-11-17 | 河南师范大学 | A kind of multilayer aerobic fermentation system and its fermentation process |
| CN108821897A (en) * | 2018-09-21 | 2018-11-16 | 无锡国联环保科技股份有限公司 | A kind of sludge aerobic fermented manure technique and system |
| CN110127986A (en) * | 2019-05-15 | 2019-08-16 | 河北九知农业科技有限公司 | A kind of sludge reduction, innoxious, resource utilization method and product line device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101172746A (en) * | 2007-10-11 | 2008-05-07 | 南京大学 | Method and equipment for combined fermentation treatment of food garbage and sewage sludge |
| CN101549942A (en) * | 2009-05-08 | 2009-10-07 | 上海城市污染控制工程研究中心有限公司 | Multilayer fermentation chamber sludge high temperature aerobic fermentation process |
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2011
- 2011-05-17 CN CN201110127200XA patent/CN102786194A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101172746A (en) * | 2007-10-11 | 2008-05-07 | 南京大学 | Method and equipment for combined fermentation treatment of food garbage and sewage sludge |
| CN101549942A (en) * | 2009-05-08 | 2009-10-07 | 上海城市污染控制工程研究中心有限公司 | Multilayer fermentation chamber sludge high temperature aerobic fermentation process |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103232271A (en) * | 2013-04-20 | 2013-08-07 | 普洱茗上品茶业有限公司 | Dedicated organic fertilizer for tea trees and production method of fertilizer |
| CN103272829A (en) * | 2013-06-03 | 2013-09-04 | 邓锦新 | Urban living garbage treatment method |
| CN104961585A (en) * | 2015-07-06 | 2015-10-07 | 华中农业大学 | Method for producing functional microbial fertilizer by two-step fermentation and application of functional microbial fertilizer |
| CN105036834A (en) * | 2015-09-02 | 2015-11-11 | 张岩 | Organic waste and animal excrement harmless treatment method |
| CN107353043A (en) * | 2016-12-07 | 2017-11-17 | 河南师范大学 | A kind of multilayer aerobic fermentation system and its fermentation process |
| CN106746428A (en) * | 2017-01-22 | 2017-05-31 | 山东汇盛天泽环境工程有限公司 | A kind of high-temperature aerobic fermentation method for sludge treatment and device |
| CN108821897A (en) * | 2018-09-21 | 2018-11-16 | 无锡国联环保科技股份有限公司 | A kind of sludge aerobic fermented manure technique and system |
| CN110127986A (en) * | 2019-05-15 | 2019-08-16 | 河北九知农业科技有限公司 | A kind of sludge reduction, innoxious, resource utilization method and product line device |
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Application publication date: 20121121 |