CN102249503A - In-situ electrolysis deodorization process for municipal sludge - Google Patents
In-situ electrolysis deodorization process for municipal sludge Download PDFInfo
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- CN102249503A CN102249503A CN2011101229688A CN201110122968A CN102249503A CN 102249503 A CN102249503 A CN 102249503A CN 2011101229688 A CN2011101229688 A CN 2011101229688A CN 201110122968 A CN201110122968 A CN 201110122968A CN 102249503 A CN102249503 A CN 102249503A
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Abstract
The invention discloses an in-situ electrolysis deodorization process for municipal sludge. Saline water serves as electrolyte, a power supply is 12-120V direct current, and sludge is subjected to in-situ electrolysis processing under the action of an electrode plate. In the process, only in-situ processing is required to drastically reduce the contents of heavy metal, phosphorus and nitrogen in sludge leaching water, thereby reducing secondary pollution. In addition, the in-situ electrolysis deodorization process has the advantages of low cost and good processing effect. The process disclosed by the invention has the incomparable advantage in the sterilization of black and stinking river sediments.
Description
Technical field
The present invention relates to a kind of municipal sludge in-situ electrolysis deodorization process.
Background technology
Municipal sludge in stacking process, easily because of anaerobion decompose smelly, discharge simultaneously phosphorous, nitrogen, heavy metal and organic interstitial water and leaching water cause the bigger harm to environment.Its influence is mainly reflected in: when 1, desilting engineering mud is not in time transported, and the smelly interference of mud common people health.2, it is smelly because of mud that sludge incineration factory and mud are stacked landfill yard, and majority is difficult to by environmental impact assessment.3, mud needs germicidal treatment in advance when biochemical industry factory or feedlot mud system compost, to avoid living contaminants.4, the emergent deodorizing of urban waste water.Common sludge deodorization technology has at present: 1, chemical oxidation or dosing deodorizing: use clorox, hydrogen peroxide, ozone, deodorization and sterilizations such as organic medicament.Characteristics are that dosing is very big, the cost height.But advantage is to handle mud whenever and wherever possible, is method commonly used at present, but generally can not stop the outflow of high pollution leaching water.2, physical deodorization: mainly contain the high-energy radiation deodorization and sterilization, heat oven dry sterilization, deodorizing needs very big investment, can not in-situ treatment, be applicable to that mud compiles to use.3, microbial deodorant: utilize the inoculation aerobic microbiological to carry out deodorizing, advantage is that cost is low, and defective is to be difficult to in-situ treatment, need compile the field at mud usually, by compound with filler, introduces a fine variety bacterium, stir processing such as stirring, and deodorizing effect is on duty mutually.
Summary of the invention
The object of the present invention is to provide a kind of municipal sludge in-situ electrolysis deodorization process.The present invention only needs in-situ treatment, just can reduce the heavy metal of mud leaching water significantly, phosphorus, and nitrogen content, high-level efficiency deodorizing simultaneously, thus reduce secondary pollution, and the cost reduction process is effective; Technology of the present invention is in addition having incomparable advantage aspect the sterilization of black-odor river bed mud, can gush bed mud and carries out effective deodorization and sterilization envelope phosphorus nitrogen separating river, lake after the draining.
In order to reach above-mentioned purpose, solution of the present invention is:
A kind of municipal sludge in-situ electrolysis deodorization process, the employing bittern water is an electrolytic solution, the 12-120V direct current is a power supply, under the effect of battery lead plate mud is carried out in-situ electrolysis and handles.
Described bittern water adopts and contains a kind of in the bittern water of dissolving state of saturation of magnesium chloride 10%.
The consumption of described bittern water is between the 0-1/5 of mud weight.
Described power supply preferably adopts the 60v volts DS.
Described electrolysis time is 5-120 minute, and the battery lead plate material is unrestricted.
Described electrolysis time is preferably 30-70 minute.
Beneficial effect of the present invention is: because the bacterium transmembrane voltage that can bear is usually about 1V, and electrolysis process of the present invention adopts the 12-120v direct current, and the cytolemma of bacterium destroys dead in therefore being easy to cause on a large scale; Electrolytic process produces hypochlorite, strong oxidizers such as hydroxyl radical free radical, can destroy smelly chemical substance, cause bacterium death simultaneously, secondly because electrolysate is magnesium hydroxide and oxychlorination magnesium, these materials have very strong precipitation flocculation and absorption heavy metal ability on the one hand, can also generate the ammonium magnesium phosphate solid with the reaction of phosphorus nitrogen simultaneously, thereby reduce the pollution level of mud leaching water significantly, these characteristics are gushed in black river, smelly lake has incomparable advantage aspect the bed mud sterilization.And technology of the present invention only needs in-situ treatment, and the cost reduction process is effective.The present invention selects the battery-operated motor cycle repacking usually for use, utilizes its mobility and in-vehicle secondary battery group, adds and joins the anodic-cathodic plate as portable mud in-situ electrolysis deodorizing car.Only need on mud, to broadcast sowing a small amount of bittern during use, the anodic-cathodic plate is separated certain distance insert in the mud, can carry out sterilization and deodorization to mud and handle.This method cost is starkly lower than chemical oxidation and dosing method, also is lower than above-mentioned physical method, and cost but effect similar to microbial deodorant be significantly better than the other side, but and has an advantage of in-situ treatment.
Embodiment
Embodiment 1
Present embodiment is chosen municipal sewage sludge and is carried out pilot scale.0.2 ton of sludge quantity.Use the portable mud in-situ electrolysis deodorizing car of battery-operated motor cycle repacking, give mud the stick hole in advance after, (described bittern water adopts the bittern water that contains magnesium chloride 10% to broadcast sowing 10 kilograms of bittern waters.) bittern was spread in static 30 minutes.Mud are inserted for 20 centimeters in the iron cathode plate and the carbon anode plate interval that will connect the 12v secondary battery then, and electrical treating was taken out after 30 minutes, and electrolytic process finds that peculiar smell disappears.Select the mud heap of same weight to be untreated in addition and carry out reference.
Get the contrast of two mud heap leaching water, find to compare the mud that is untreated as reference in the leaching water of electrical treating, heavy metal content descends 30% (lead) to 95% (copper), and it is about 70% that ammonia-nitrogen content descends, and it is about 85% that total phosphorous descends, and COD descends about 93%.
Observe two mud heaps, have no significant change no stink inside and outside the 3-14 days observation electrical treating mud heaps.Reference group begins smelly after 3 days, stench after 7 days, and the inner blackout of mud heap expands.
Embodiment 2.
Present embodiment is chosen smelly feedlot mud, and 0.5 ton of sludge quantity is apparent more dried.Use the portable mud in-situ electrolysis deodorizing car of battery-operated motor cycle repacking, give mud the stick hole in advance after, broadcast sowing 30 kilograms of bittern waters (described bittern water adopts and contains magnesium chloride to the bittern water that dissolves state of saturation).Made the bittern diffusion in static 1 hour.To connect 3 of the iron cathode plates of 60V secondary battery then, 3 of carbon anode plates alternately insert in the mud, keep 10 centimeters at interval of anodic-cathodic plates, and electrical treating is the rotten odor completely dissolve after 70 minutes, begins to have the smelly appearance of slight chlorine, stops electrical treating this moment.
It is all not smelly to observe 3-14 days this feedlot mud, confirms that mud is effectively disposed.
Embodiment 3.
Near small-sized blowdown canal pilot scale certain approximate anhydrous food factory, to liking the rancid mud in the riverbed, sludge quantity is in advance in respect of 40 tons.Higher because of recording the water body specific conductivity, and contain a large amount of chlorions, so do not discharge bittern.Use the portable mud in-situ electrolysis deodorizing car of battery-operated motor cycle repacking, 3 of the iron anode plates of 120V secondary battery will be connected, 3 of carbon cathode plates, keep 10 centimeters at interval of anodic-cathodic plates, fixed profile becomes former and later two electrode groups of similar rake shape, begin to tow in bed mud after inserting about 20 centimeters of bed mud, the bed mud that guarantees approximately every square metre is by electrical treating 30 minutes, until the riverbed of 20 meters of test sections by whole electrical treating.Because this is that ferroelectric pole plate changes as anode, therefore the obvious loss of iron anode is found in the construction back.
Observe 3-7 days, this blowdown canal does not have smelly phenomenon, and the sludge bulking phenomenon is not arranged yet.
This technology can be used for the river gushes bed mud and administers, and promptly by after the sterilization of electrical treating original bed, microbial preparation such as spreading genus bacillus carries out mud decrement or the spreading aerobic sludge improves riverbed bed mud character again.This moment, bittern was not thrown in general selection in order to avoid water body to be damaged, but corresponding necessary iron anode or the aluminum anode of using could pass through the electric iron that discharges, and the aluminum metal ion comes phosphoric in the mud is fixed.
Claims (6)
1. municipal sludge in-situ electrolysis deodorization process, it is characterized in that: the employing bittern water is an electrolytic solution, the 12-120V volts DS is a power supply, under the effect of battery lead plate mud is carried out in-situ electrolysis and handles.
2. municipal sludge in-situ electrolysis deodorization process as claimed in claim 1 is characterized in that: described bittern water adopts and contains a kind of in the bittern water of dissolving state of saturation of magnesium chloride 10%.
3. municipal sludge in-situ electrolysis deodorization process as claimed in claim 1 is characterized in that: the consumption of described bittern water is the 0-1/5 of mud weight.
4. municipal sludge in-situ electrolysis deodorization process as claimed in claim 1 is characterized in that: described power supply adopts the 60v volts DS.
5. municipal sludge in-situ electrolysis deodorization process as claimed in claim 1 is characterized in that: described electrolysis time is 5-120 minute, and the battery lead plate material is unrestricted.
6. municipal sludge in-situ electrolysis deodorization process as claimed in claim 5 is characterized in that: described electrolysis time is 30-70 minute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2011101229688A CN102249503A (en) | 2011-05-12 | 2011-05-12 | In-situ electrolysis deodorization process for municipal sludge |
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| CN2011101229688A CN102249503A (en) | 2011-05-12 | 2011-05-12 | In-situ electrolysis deodorization process for municipal sludge |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102493397A (en) * | 2011-12-30 | 2012-06-13 | 天津生态城环保有限公司 | In-situ landfill and island creation method for recycling polluted bed-mud dehydrated by geotextile tubes |
| CN104193125A (en) * | 2014-08-15 | 2014-12-10 | 上海交通大学 | Electrochemical/sodium hypochlorite coupled sludge reduction pretreatment method |
| CN105658249A (en) * | 2013-10-18 | 2016-06-08 | 布鲁科技有限公司 | High-voltage electrolysis device for eliminating bad odor and toxic gas using liquid fertilizer |
| CN109607990A (en) * | 2018-12-29 | 2019-04-12 | 博域环保技术研究院(南京)有限公司 | A kind of heavily contaminated river bottom mud electrolysis nitrogen consolidates the processing method of phosphorus |
| CN109867411A (en) * | 2019-03-15 | 2019-06-11 | 长沙如洋环保科技有限公司 | A kind of wiring board sewage treatment process |
| CN110937768A (en) * | 2018-09-21 | 2020-03-31 | 香港科技大学 | Method for treating sludge and deodorizing method |
| CN111333438A (en) * | 2020-03-09 | 2020-06-26 | 广州市环境保护工程设计院有限公司 | System and method for treating surplus sludge of urban domestic sewage |
| CN114291988A (en) * | 2022-01-18 | 2022-04-08 | 太原理工大学 | Biological phosphorus release method for improving bioavailability of phosphorus in sludge |
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| JP2001259641A (en) * | 2000-03-16 | 2001-09-25 | Ebara Corp | Deodorizing method and its device |
| CN1636895A (en) * | 2004-12-02 | 2005-07-13 | 上海交通大学 | Sludge stabilizing electrochemical treating process |
| CN2721628Y (en) * | 2004-08-27 | 2005-08-31 | 桂林工学院 | DC. electrolytic sludge reactor |
| JP2006175444A (en) * | 2006-03-29 | 2006-07-06 | Hitachi Maxell Ltd | Electrolytic treatment method for excess sludge |
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Patent Citations (5)
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| JP2001259641A (en) * | 2000-03-16 | 2001-09-25 | Ebara Corp | Deodorizing method and its device |
| CN2721628Y (en) * | 2004-08-27 | 2005-08-31 | 桂林工学院 | DC. electrolytic sludge reactor |
| CN1636895A (en) * | 2004-12-02 | 2005-07-13 | 上海交通大学 | Sludge stabilizing electrochemical treating process |
| JP2006175444A (en) * | 2006-03-29 | 2006-07-06 | Hitachi Maxell Ltd | Electrolytic treatment method for excess sludge |
| CN101774740A (en) * | 2009-12-29 | 2010-07-14 | 常州浩瀚新材料科技有限公司 | Treatment technology and device for resource utilization of sludge |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102493397A (en) * | 2011-12-30 | 2012-06-13 | 天津生态城环保有限公司 | In-situ landfill and island creation method for recycling polluted bed-mud dehydrated by geotextile tubes |
| CN102493397B (en) * | 2011-12-30 | 2014-07-02 | 天津生态城环保有限公司 | In-situ landfill and island creation method for recycling polluted bed-mud dehydrated by geotextile tubes |
| CN105658249A (en) * | 2013-10-18 | 2016-06-08 | 布鲁科技有限公司 | High-voltage electrolysis device for eliminating bad odor and toxic gas using liquid fertilizer |
| CN104193125A (en) * | 2014-08-15 | 2014-12-10 | 上海交通大学 | Electrochemical/sodium hypochlorite coupled sludge reduction pretreatment method |
| CN104193125B (en) * | 2014-08-15 | 2016-03-02 | 上海交通大学 | The sludge reduction pretreatment process of electrochemistry/clorox coupling |
| CN110937768A (en) * | 2018-09-21 | 2020-03-31 | 香港科技大学 | Method for treating sludge and deodorizing method |
| CN109607990A (en) * | 2018-12-29 | 2019-04-12 | 博域环保技术研究院(南京)有限公司 | A kind of heavily contaminated river bottom mud electrolysis nitrogen consolidates the processing method of phosphorus |
| CN109867411A (en) * | 2019-03-15 | 2019-06-11 | 长沙如洋环保科技有限公司 | A kind of wiring board sewage treatment process |
| CN109867411B (en) * | 2019-03-15 | 2021-11-05 | 深圳市富盛电子有限公司 | Circuit board sewage treatment process |
| CN111333438A (en) * | 2020-03-09 | 2020-06-26 | 广州市环境保护工程设计院有限公司 | System and method for treating surplus sludge of urban domestic sewage |
| CN114291988A (en) * | 2022-01-18 | 2022-04-08 | 太原理工大学 | Biological phosphorus release method for improving bioavailability of phosphorus in sludge |
| CN114291988B (en) * | 2022-01-18 | 2023-10-13 | 太原理工大学 | Biological phosphorus release method for improving bioavailability of phosphorus in sludge |
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Owner name: XIAMEN ZHONGMIN QUANQIU WATER AFFAIR TECHNOLOGY CO Free format text: FORMER OWNER: QUANZHOU NORMAL UNIVERSITY Effective date: 20121120 |
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Effective date of registration: 20121120 Address after: 361100 strong industrial building, Xiangan Industrial Zone, Xiamen torch hi tech Zone, Fujian 201 Applicant after: Xiamen Zhong min Global Water Technology Co., Ltd. Address before: Fengze District of Quanzhou City, Fujian province 362000 city of East China Sea Applicant before: Quanzhou Normal University |
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Application publication date: 20111123 |