CN102887616A - Low strength continuous aeration quick biological drying method - Google Patents
Low strength continuous aeration quick biological drying method Download PDFInfo
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- CN102887616A CN102887616A CN2011102056826A CN201110205682A CN102887616A CN 102887616 A CN102887616 A CN 102887616A CN 2011102056826 A CN2011102056826 A CN 2011102056826A CN 201110205682 A CN201110205682 A CN 201110205682A CN 102887616 A CN102887616 A CN 102887616A
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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
A low strength continuous aeration quick biological drying method relates to a new quick sludge treatment technology of a sewage treatment plant. The aeration strength of low strength continuous aeration provided by the invention is 0.5 meter<3>/hour-5meter<3>/h for each ton of dewatering sludge. A certain mount of auxiliary materials are added in the dewatering sludge (the water content is about 80%), the initial water content of the materials which are uniformly mixed is between 50%-75%, and the materials are subjected to quick drying treatment in a sludge biological drying reactor. By the method, the sludge water is obviously reduced, the ventilation efficiency and oxygen supply efficiency are high, the utilization ratio of the drying reactor is high, and the water content of the materials is reduced below 40% after 6-15 days of biological drying treatment. The method is low in aeration energy consumption, does not need external mechanical mixing, is low in operation cost, can effectively control secondary pollution of odorous gases and the like during the operation process, and can be widely applied to the sludge drying treatment of the sewage treatment plant.
Description
Technical field
The invention discloses a kind of low strength continuous aeration quick biological drying method, be specifically related to a kind of mud quick biological drying and dispose novel process.
Background technology
Along with China's Fast Urbanization, treatment rate of domestic sewage increases sharply, and the mud that municipal wastewater treatment plant produces also increases considerably, and according to statistics, the annual dewatered sludge amount that produces of China reaches 8,000,000 tons at present.Process to dispose municipal sludge and need follow the principle of minimizing, stabilization, innoxious, recycling.Mud mainly contains landfill, soil utilization and burning etc. at present.Because water ratio is still up to 80% after the municipal sludge thickening, such mud have volume large, be unfavorable for the shortcomings such as transportation, character be unstable, therefore, municipal sludge being carried out drying and other treatment, reduces its water ratio, is to solve at present key point in the sludge disposal process.Traditional sludge drying adopts the form of sludge drying bed, and mud is deposited in outdoor drying bed, by natural ventilation and action of gravity mud is carried out mummification.Modern drying process is mainly heat drying, and with the evaporation of the moisture in the mud, using more heat drying is to utilize coal, oil or superheated steam that heat energy directly or indirectly is provided by external heat source, makes the moisture evaporation in the mud, realizes sludge drying.Although heat drying has the advantages such as floor space is little, minimizing is obvious, end-use is flexible, also there are a lot of problems in heat drying technique, mainly be the investment and working cost is high, the equipment operation energy consumption is high, be difficult to large scale application.Therefore, develop more economical, more energy-conservation drying technique become China municipal sludge process dispose in the urgent need to, biological dewatered is under the ventilation oxygen supply condition, microorganism in the mud utilizes easily biodegradable organics to carry out aerobic respiration, when satisfying self growth and breeding demand and discharge the large number of biological energy.This part energy can make temperature of charge significantly raise, and generally can reach 60 ℃, can reach more than 70 ℃.Moisture in the mud is converted into water vapour under the heating of bioenergy, enter hole in the material by free diffusing and forced convection, is taken out of the heap body by the dry air that blower fan blasts, thereby realizes continuously dehydration and drying.Chinese patent application CN1587213A discloses a kind of method of carrying out Sludge Composting with the Novel conditioning agent, after the method mixes mud and amendment, control ventilation and the stirring frequency of dynamic aerobic fermentation device, strength ofdraft is 100L/min-300L/min, i.e. 6-12 m
3/ h, the sludge composting cycle is 7-14 days.This technique ventilation in composting process is larger, needs mechanical stirring in the composting process, and intermittent aeration control does not with great difficulty cause anoxic or anaerobism, easily produces odorous gas, and ventilation and mechanical stirring energy consumption are high.The invention discloses a kind of low strength continuous aeration sludge organism drying process, the aeration intensity (0.5m that the present invention requires
3/ h-5m
3/ h) more published patent obviously reduces, and has greatly saved aeration energy consumption, the continuous low intensity aeration of this technique, can effectively reduce the generation of the secondary pollutions such as stink, need not mechanical stirring, energy consumption is low, can shorten the mummification cycle, thereby realize the quick biological drying of mud.
Summary of the invention
The object of the invention is to disclose the biological dewatered method of a kind of low strength continuous aeration, municipal sludge is carried out quick biological drying process, make the quick minimizing of mud, stabilization.The soil utilization of sludge organism mummification product resourcebility, burn or make other products etc.Biological dewatered reactor utilising efficiency of the present invention is high, and energy consumption is low, and running cost is cheap, and economical efficiency is very obvious, can be widely used in various mud quick biological dryings and process.
The present invention is achieved through the following technical solutions:
Dewatered sludge and a certain amount of one or more auxiliary materials (mushroom soil, wood chip, straw, husk, cavings etc.) mix, and control material initial aqueous rate is 50%-70%.To mix material and be positioned in the mummification reactor, and carry out low strength continuous aeration quick biological drying and process, this biological dewatered reactor closely links to each other with the aerating system that can regulate aeration rate, and the control aeration intensity is at material 0.5m per ton
3/ h-5m
3In/h the scope.Through 6-10 days aerobe drying and other treatment, material water ratio was reduced to below 40%.
Embodiment:
Following example is used for setting forth the present invention, and is not used in interpretation protection scope of the present invention.
Embodiment 1
Dewatered sludge (water ratio 78%) is taken from Xiamen industrial sewage treatment plant, add the mushroom soil of water ratio 20% as auxiliary material, mixing rear water ratio is 58%, above-mentioned material is positioned in the sludge drying reactor of being furnished with ventilation system, the low strength continuous aeration, the control aeration intensity is at ton material 2.8m
3/ h t.Through 8 days biological dewatered processing, material water ratio was reduced to 39.5%.
Embodiment 2
Dewatered sludge (water ratio 77%) is taken from Xiamen city domestic sewage treatment plant, add the dry rice straw of water ratio 10% as auxiliary material, mixing rear water ratio is 61%, above-mentioned material is positioned in the sludge drying reactor of being furnished with ventilation system, low intensity aeration is controlled aeration intensity material 4 m per ton continuously
3/ h.Through 10 days biological dewatered processing, material water ratio was reduced to 38.4%.
Embodiment 3
Dewatered sludge (water ratio 78%) is taken from Xiamen city domestic sewage treatment plant, add the wood chip of water ratio 20% as auxiliary material, mixing rear water ratio is 56%, above-mentioned material is positioned in the sludge drying reactor of being furnished with ventilation system, the low strength continuous aeration, the control aeration intensity is at material 0.75m per ton
3/ h.Through 6 days biological dewatered processing, material water ratio was reduced to 39.6%.
Claims (5)
1. low strength continuous aeration quick biological drying method, it is characterized in that: after the material uniform stirring of mummification mixes, be positioned in the biological dewatered reactor, reactor links to each other with aerating system, automatically control in real time aeration rate by the control aerating system, when above-mentioned material carried out continuous low intensity aeration drying and other treatment, the control aeration intensity was at material 0.5m per ton
3/ h-5m
3In/h the scope.
2. material is by detesting fermentation calefaction after mixing, when biological dewatered reactor temperature is raised to more than 55 ℃, low strength continuous aeration operation according to claim 1 5-10 days, temperature of charge can be kept more than 55 ℃ 5-10 days in the reactor during this period, biological dewatered end, material water ratio is below 40%.
3. the biological dewatered reactor described in the claim 1 is characterized in that: be shaped as box, stacking or bar buttress, the bottom ventilates.
4. the control of the real-time automatic aeration system described in the claim 1 is characterized in that: can regulate by the power of variable frequency adjustment Aeration fan or by gas meter the mode such as aeration intensity and realize.
5. the material described in the claim 1 comprises dewatered sludge and the auxiliary material of sewage work, dewatered sludge water ratio approximately about 80%; Described auxiliary material for mushroom soil, wood chip, straw, husk, cavings etc. one or more, the auxiliary material water ratio is 10%-30% approximately, the auxiliary material quality is the 10%-50% of dewatered sludge quality, mixing rear material initial aqueous rate is 55%-70%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102056826A CN102887616A (en) | 2011-07-22 | 2011-07-22 | Low strength continuous aeration quick biological drying method |
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|---|---|---|---|
| CN2011102056826A CN102887616A (en) | 2011-07-22 | 2011-07-22 | Low strength continuous aeration quick biological drying method |
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| CN102887616A true CN102887616A (en) | 2013-01-23 |
Family
ID=47531322
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| CN2011102056826A Pending CN102887616A (en) | 2011-07-22 | 2011-07-22 | Low strength continuous aeration quick biological drying method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103864274A (en) * | 2014-03-18 | 2014-06-18 | 同济大学 | Biological drying treatment method for high-solid-content sludge obtained by anaerobic digestion |
| CN105836990A (en) * | 2015-01-14 | 2016-08-10 | 北京中科国通环保工程技术有限公司 | Method and apparatus for bioleaching drying of sludge |
| CN106746426A (en) * | 2017-01-12 | 2017-05-31 | 哈尔滨工业大学 | A kind of dehydration quantitative reduction method for storing sludge |
| CN111940452A (en) * | 2020-06-24 | 2020-11-17 | 中农新科(苏州)有机循环研究院有限公司 | Biological drying sectional type aeration method |
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| JPS63134589A (en) * | 1986-11-22 | 1988-06-07 | 岩淵 健一 | Treatment of organic water-containing sludge |
| JP3600216B2 (en) * | 2002-02-22 | 2004-12-15 | 直治 山▲崎▼ | Fermentation treatment method and fermentation treatment device for organic waste |
| CN101289340A (en) * | 2008-06-13 | 2008-10-22 | 浦华控股有限公司 | Semi-forced ventilation static sludge aerobic compost method |
| CN101357816A (en) * | 2008-09-25 | 2009-02-04 | 高军 | Micro organism rapid dried sludge dewatered sludge technological process and treatment product |
| CN201301290Y (en) * | 2008-11-22 | 2009-09-02 | 寿光蔡伦中科肥料有限责任公司 | Sludge ventilating aerobic fermentation control device |
| CN101857470A (en) * | 2010-05-26 | 2010-10-13 | 昆明光宝生物技术工程有限公司 | Method for rapidly composting sludge |
| CN101962204A (en) * | 2010-09-21 | 2011-02-02 | 同济大学 | Low energy consumption method for producing fertilizer by sludge granulation-biological drying |
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2011
- 2011-07-22 CN CN2011102056826A patent/CN102887616A/en active Pending
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|---|---|---|---|---|
| JPS63134589A (en) * | 1986-11-22 | 1988-06-07 | 岩淵 健一 | Treatment of organic water-containing sludge |
| JP3600216B2 (en) * | 2002-02-22 | 2004-12-15 | 直治 山▲崎▼ | Fermentation treatment method and fermentation treatment device for organic waste |
| CN101289340A (en) * | 2008-06-13 | 2008-10-22 | 浦华控股有限公司 | Semi-forced ventilation static sludge aerobic compost method |
| CN101357816A (en) * | 2008-09-25 | 2009-02-04 | 高军 | Micro organism rapid dried sludge dewatered sludge technological process and treatment product |
| CN201301290Y (en) * | 2008-11-22 | 2009-09-02 | 寿光蔡伦中科肥料有限责任公司 | Sludge ventilating aerobic fermentation control device |
| CN101857470A (en) * | 2010-05-26 | 2010-10-13 | 昆明光宝生物技术工程有限公司 | Method for rapidly composting sludge |
| CN101962204A (en) * | 2010-09-21 | 2011-02-02 | 同济大学 | Low energy consumption method for producing fertilizer by sludge granulation-biological drying |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103864274A (en) * | 2014-03-18 | 2014-06-18 | 同济大学 | Biological drying treatment method for high-solid-content sludge obtained by anaerobic digestion |
| CN105836990A (en) * | 2015-01-14 | 2016-08-10 | 北京中科国通环保工程技术有限公司 | Method and apparatus for bioleaching drying of sludge |
| CN105836990B (en) * | 2015-01-14 | 2019-12-06 | 北京中科国通环保工程技术股份有限公司 | Method and device for bioleaching and drying sludge |
| CN106746426A (en) * | 2017-01-12 | 2017-05-31 | 哈尔滨工业大学 | A kind of dehydration quantitative reduction method for storing sludge |
| CN111940452A (en) * | 2020-06-24 | 2020-11-17 | 中农新科(苏州)有机循环研究院有限公司 | Biological drying sectional type aeration method |
| CN111940452B (en) * | 2020-06-24 | 2022-10-14 | 中农新科(苏州)有机循环研究院有限公司 | Biological drying sectional type aeration method |
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Application publication date: 20130123 |