CN105293852A - Method for synchronously coupling biological sludge leaching and conditioning as well as odor purification - Google Patents

Method for synchronously coupling biological sludge leaching and conditioning as well as odor purification Download PDF

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Publication number
CN105293852A
CN105293852A CN201510878472.1A CN201510878472A CN105293852A CN 105293852 A CN105293852 A CN 105293852A CN 201510878472 A CN201510878472 A CN 201510878472A CN 105293852 A CN105293852 A CN 105293852A
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China
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sludge
foul smell
bioleaching
hydrogen sulfide
conditioning
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CN201510878472.1A
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CN105293852B (en
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李超
惠晓梅
杨凯
袁进
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Shanxi Xinkelian Environment Technology Co ltd
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Research Center for Eco Environmental Sciences of CAS
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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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  • Treating Waste Gases (AREA)
  • Treatment Of Sludge (AREA)
  • Activated Sludge Processes (AREA)

Abstract

The invention discloses a method for synchronously coupling biological sludge leaching and conditioning as well as odor purification and aims at solving the problem that the operation and treatment costs are increased because nutrient substrates such as reductive sulfur and iron are needed to be additionally added in the existing biological sludge leaching process and odor treatment is carried out by using a biological or ionic deodorization method. According to the method, biological sludge leaching and odor treatment are combined, and hydrogen sulfide and ammonia gas in odor are used as the nutrient substrates in the biological leaching process. Hydrogen sulfide is difficult to absorb because the pH value of a sludge solution is kept between 2 and 4 in the biological leaching process. Through adding an absorption agent into the sludge solution, odor pollutants such as hydrogen sulfide and ammonia gas can be efficiently absorbed and then are used as the nutrient substrates of biological leaching microorganisms, so that resources are comprehensively utilized, and the addition amount of the nutrient substrates is reduced; and an odor treatment system can be omitted, so that the sewage and sludge treatment cost is reduced.

Description

The method of sludge organism leaching conditioning synchronous coupling odor purification
Technical field
The present invention relates to water, air, technical field of sludge treatment, specifically the method for a kind of sludge organism leaching conditioning synchronous coupling odor purification.
Background technology
Activated sludge process is the main technique of current sewage disposal, in treating processes, can produce a large amount of excess sludges.The surplus sludge volume that China produces due to municipal wastewater process at present reaches about 4,000 ten thousand tons/year.Owing to containing a large amount of pollutent and pathogenic micro-organism in mud, therefore must carry out process and dispose.In addition, in sewage treatment process, due to microbiological anaerobic fermentation, also producing a large amount of foul smell containing the pollutent such as hydrogen sulfide, ammonia, if do not processed, the periphery masses can be had a strong impact on and Sewage Plant staff is healthy.
Owing to containing large quantity of moisture in excess sludge, after concentrated, its water ratio is about 97%, and a large amount of moisture significantly increases the difficulty of sludge treatment, and therefore dehydration is a key link of sludge treatment.For improving dewatering efficiency, before dewatering, need to nurse one's health mud, to improve its dewatering, conventional Opsonizing method mainly chemical coagulation process.Bioleaching, also referred to as bioleaching, bioleaching, it is a kind of emerging sludge conditioning method in recent years, the method is by the metabolism of the chemoautotrophy such as thiobacillus thiooxidans and thiobacillus ferrooxidant microorganism, the dewatering of mud can greatly be improved, and do not need to add chemical coagulator, thus improve the follow-up disposal effect of mud, therefore obtain and apply fast.At present in Wuxi, how Harbin, Xi'an etc. dropped into actual use.
But the sludge organism leaching floras such as thiobacillus thiooxidans are in metabolic processes, need to add a large amount of reducible sulfurs, iron as nutritional substrate, significantly increase running cost, the operation result display of Practical Project, the expense of nutritional substrate accounts for about 2/3 of sludge organism leaching treatment operating costs.
And in sewage work, particularly in anaerobism section, a large amount of foul smell containing hydrogen sulfide and ammonia can be produced, the methods such as general employing biology or ion deodorization carry out purifying rear discharge, this not only adds resource consumption, also can increase Sewage Plant work load, thus improve its running cost.Bio-trickling is in treating processes simultaneously, also can produce a certain amount of mud, can cause secondary pollution to environment.
Summary of the invention
The object of the invention is to need additionally to add the nutritional substrate such as reducible sulfur, iron to solve existing sludge organism leaching, Odor control then adopts biology or ion deodorization method, all add the problem running processing cost, and provide a kind of sludge organism leaching to nurse one's health the method for synchronous coupling odor purification.
The present invention is achieved through the following technical solutions:
A method for sludge organism leaching conditioning synchronous coupling odor purification, comprises the steps:
1) using the foul smell containing hydrogen sulfide, ammonia as source of the gas, utilize induced draft fan collect foul smell;
2) sludge concentration 1% ~ 5% of solution in bioleaching pond is controlled, absorption medicament is added in bioleaching pond, the add-on absorbing medicament is 1.0 ~ 15g/L, be passed in bioleaching pond after foul smell is pressurizeed and carry out aeration, aeration rate is 0.1 ~ 3.0m3/ (m3*min), utilize the metabolism absorbing medicament and bioleaching microorganism, realize degrading to the absorption of the hydrogen sulfide in foul smell, ammonia, thus purification foul smell; Wherein, described absorption medicament is strong oxidizing property compound or can generates sedimentary compound with hydrogen sulfide;
3) excess sludge that sewage work produces is joined in bioleaching pond, under the effect of bioleaching microorganism, conditioning modification is carried out to mud, mud after conditioning is sent into mechanical dehydration machine and is dewatered, form dewatered sludge, carry out follow-up disposal again, as can landfill, incineration disposal be carried out, also may be used for fertilizer and prepare.
Further, described strong oxidizing property compound is two kinds of a kind of or arbitrary proportion in Sulfothiorine, potassium permanganate, and described to generate sedimentary compound with hydrogen sulfide be the several of a kind of or arbitrary proportion in molysite, ferrous salt, mantoquita, calcium salt.
Foul smell source described in the present invention is all not limited to Sewage Plant, also can utilize the foul smell in the sources such as garbage loading embeading factory, septic tank, as long as containing hydrogen sulfide, ammonia in foul smell.The inventive method decapacitation realizes outside absorption cleaning to hydrogen sulfide, ammonia, other compositions in foul smell, as pollutents such as thiomethyl alcohols, also can reach certain absorption cleaning effect.
Sludge organism leaching combines with Odor control by the present invention, utilizes hydrogen sulfide in foul smell and ammonia as the nutritional substrate of bioleaching process.Due in bioleaching process, sludge solutions pH value remains between 2-4, and hydrogen sulfide is difficult to be absorbed.The present invention by adding absorption medicament in sludge solutions, the efficient absorption to the odor pollution such as hydrogen sulfide and ammonia thing can be realized, then as the nutritional substrate of bioleaching microorganism, thus achieve the comprehensive utilization of resource, decrease the dosage of nutritional substrate, and can stench processing system be omitted, reduce sewage sludge processing cost.
The present invention utilizes foul smell as bioleaching source of the gas, to save nutritional substrate consumption, and is compared with source of the gas with air, adopts foul smell as after source of the gas, and in nutritional substrate, reducible sulfur is reduced to original 10 ~ 30% by 1 original ~ 5g; Foul smell is after the absorption cleaning of bioleaching pond, and hydrogen sulfide in foul smell, ammonia isoconcentration are reduced to original 10 ~ 50%.
Accompanying drawing explanation
Fig. 1 is the process flow sheet of the inventive method.
Embodiment
Embodiment 1
A method for sludge organism leaching conditioning synchronous coupling odor purification, comprises the steps:
1) using the foul smell containing hydrogen sulfide, ammonia as source of the gas, utilize induced draft fan collect foul smell;
2) control the sludge concentration 3% of solution in bioleaching pond, in bioleaching pond, add absorption medicament, the add-on absorbing medicament is 5g/L, and be passed in bioleaching pond after being pressurizeed by foul smell and carry out aeration, aeration rate is 0.1m 3/ (m 3* min), utilize the metabolism absorbing medicament and bioleaching microorganism, realize degrading to the absorption of the hydrogen sulfide in foul smell, ammonia, thus purification foul smell; Wherein, described absorption medicament is Sulfothiorine;
3) join in bioleaching pond by the excess sludge that sewage work produces, under the effect of bioleaching microorganism, carry out conditioning modification to mud, the mud after conditioning is sent into mechanical dehydration machine and is dewatered, and forms dewatered sludge, for subsequent use.
Embodiment 2
A method for sludge organism leaching conditioning synchronous coupling odor purification, comprises the steps:
1) using the foul smell containing hydrogen sulfide, ammonia as source of the gas, utilize induced draft fan collect foul smell;
2) control the sludge concentration 3% of solution in bioleaching pond, in bioleaching pond, add absorption medicament, the add-on absorbing medicament is 15g/L, and be passed in bioleaching pond after being pressurizeed by foul smell and carry out aeration, aeration rate is 2.0m 3/ (m 3* min), utilize the metabolism absorbing medicament and bioleaching microorganism, realize degrading to the absorption of the hydrogen sulfide in foul smell, ammonia, thus purification foul smell; Wherein, described absorption medicament is Sulfothiorine and the potassium permanganate of arbitrary proportion mixing;
3) join in bioleaching pond by the excess sludge that sewage work produces, under the effect of bioleaching microorganism, carry out conditioning modification to mud, the mud after conditioning is sent into mechanical dehydration machine and is dewatered, and forms dewatered sludge, for subsequent use.
Embodiment 3
A method for sludge organism leaching conditioning synchronous coupling odor purification, comprises the steps:
1) using the foul smell containing hydrogen sulfide, ammonia as source of the gas, utilize induced draft fan collect foul smell;
2) control the sludge concentration 1% of solution in bioleaching pond, in bioleaching pond, add absorption medicament, the add-on absorbing medicament is 8g/L, and be passed in bioleaching pond after being pressurizeed by foul smell and carry out aeration, aeration rate is 13.0m 3/ (m 3* min), utilize the metabolism absorbing medicament and bioleaching microorganism, realize degrading to the absorption of the hydrogen sulfide in foul smell, ammonia, thus purification foul smell; Wherein, described absorption medicament is for can produce sedimentary ferrous salt with hydrogen sulfide;
3) join in bioleaching pond by the excess sludge that sewage work produces, under the effect of bioleaching microorganism, carry out conditioning modification to mud, the mud after conditioning is sent into mechanical dehydration machine and is dewatered, and forms dewatered sludge, for subsequent use.
Embodiment 4
A method for sludge organism leaching conditioning synchronous coupling odor purification, comprises the steps:
1) using the foul smell containing hydrogen sulfide, ammonia as source of the gas, utilize induced draft fan collect foul smell;
2) control the sludge concentration 5% of solution in bioleaching pond, in bioleaching pond, add absorption medicament, the add-on absorbing medicament is 1.0g/L, and be passed in bioleaching pond after being pressurizeed by foul smell and carry out aeration, aeration rate is 0.1m 3/ (m 3* min), utilize the metabolism absorbing medicament and bioleaching microorganism, realize degrading to the absorption of the hydrogen sulfide in foul smell, ammonia, thus purification foul smell; Wherein, described absorption medicament is potassium permanganate;
3) join in bioleaching pond by the excess sludge that sewage work produces, under the effect of bioleaching microorganism, carry out conditioning modification to mud, the mud after conditioning is sent into mechanical dehydration machine and is dewatered, and forms dewatered sludge, for subsequent use.
Embodiment 5
A method for sludge organism leaching conditioning synchronous coupling odor purification, comprises the steps:
1) using the foul smell containing hydrogen sulfide, ammonia as source of the gas, utilize induced draft fan collect foul smell;
2) control the sludge concentration 2% of solution in bioleaching pond, in bioleaching pond, add absorption medicament, the add-on absorbing medicament is 12g/L, and be passed in bioleaching pond after being pressurizeed by foul smell and carry out aeration, aeration rate is 3.0m 3/ (m 3* min), utilize the metabolism absorbing medicament and bioleaching microorganism, realize degrading to the absorption of the hydrogen sulfide in foul smell, ammonia, thus purification foul smell; Wherein, described absorption medicament is can produce with hydrogen sulfide the molysite and mantoquita that sedimentary and arbitrary proportion mixes;
3) join in bioleaching pond by the excess sludge that sewage work produces, under the effect of bioleaching microorganism, carry out conditioning modification to mud, the mud after conditioning is sent into mechanical dehydration machine and is dewatered, and forms dewatered sludge, for subsequent use.

Claims (2)

1. a method for sludge organism leaching conditioning synchronous coupling odor purification, is characterized in that, comprise the steps:
1) using the foul smell containing hydrogen sulfide, ammonia as source of the gas, utilize induced draft fan collect foul smell;
2) control the sludge concentration 1% ~ 5% of solution in bioleaching pond, in bioleaching pond, add absorption medicament, the add-on absorbing medicament is 1.0 ~ 15g/L, and be passed in bioleaching pond after being pressurizeed by foul smell and carry out aeration, aeration rate is 0.1 ~ 3.0m 3/ (m 3* min), utilize the metabolism absorbing medicament and bioleaching microorganism, realize degrading to the absorption of the hydrogen sulfide in foul smell, ammonia, thus purification foul smell; Wherein, described absorption medicament is strong oxidizing property compound or can generates sedimentary compound with hydrogen sulfide;
3) join in bioleaching pond by the excess sludge that sewage work produces, under the effect of bioleaching microorganism, carry out conditioning modification to mud, the mud after conditioning is sent into mechanical dehydration machine and is dewatered, and forms dewatered sludge, then carries out follow-up disposal.
2. the method for sludge organism leaching conditioning according to claim 1 synchronous coupling odor purification, it is characterized in that: described strong oxidizing property compound is two kinds of a kind of or arbitrary proportion in Sulfothiorine, potassium permanganate, described to generate sedimentary compound with hydrogen sulfide be the several of a kind of or arbitrary proportion in molysite, ferrous salt, mantoquita, calcium salt.
CN201510878472.1A 2015-12-04 2015-12-04 The method of the synchronous coupling odor purification of sludge organism leaching conditioning Expired - Fee Related CN105293852B (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107244789A (en) * 2017-06-09 2017-10-13 李超 A kind of bioleaching system and the method for sludge treatment using the system
CN108751592A (en) * 2018-06-20 2018-11-06 浙江顺艺园林工程有限公司 A kind of device for municipal sewage plant integration deodorization and sewage disposal
CN109529568A (en) * 2018-11-29 2019-03-29 重庆市渝西水务有限公司 A kind of odor treatment method based on aerobic tank aerating system
CN110898643A (en) * 2019-12-03 2020-03-24 太原理工大学 Hydrogen sulfide source and sludge biological leaching reactor
CN112794586A (en) * 2019-11-14 2021-05-14 上海城投污水处理有限公司 Treatment method for inhibiting dehydration of hydrogen sulfide by excess sludge

Citations (1)

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Publication number Priority date Publication date Assignee Title
CN1133568A (en) * 1993-09-17 1996-10-16 Abb.弗拉克特有限公司 Method and apparatus for absorbing hydrogen sulphide

Patent Citations (1)

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Publication number Priority date Publication date Assignee Title
CN1133568A (en) * 1993-09-17 1996-10-16 Abb.弗拉克特有限公司 Method and apparatus for absorbing hydrogen sulphide

Non-Patent Citations (1)

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Title
董晓清等: "污水处理厂臭气污染控制技术研究进展", 《安徽农业科学》 *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107244789A (en) * 2017-06-09 2017-10-13 李超 A kind of bioleaching system and the method for sludge treatment using the system
CN108751592A (en) * 2018-06-20 2018-11-06 浙江顺艺园林工程有限公司 A kind of device for municipal sewage plant integration deodorization and sewage disposal
CN108751592B (en) * 2018-06-20 2021-03-26 浙江顺艺园林工程有限公司 A device that is used for municipal sewage factory integration deodorization and sewage treatment
CN109529568A (en) * 2018-11-29 2019-03-29 重庆市渝西水务有限公司 A kind of odor treatment method based on aerobic tank aerating system
CN112794586A (en) * 2019-11-14 2021-05-14 上海城投污水处理有限公司 Treatment method for inhibiting dehydration of hydrogen sulfide by excess sludge
CN110898643A (en) * 2019-12-03 2020-03-24 太原理工大学 Hydrogen sulfide source and sludge biological leaching reactor
CN110898643B (en) * 2019-12-03 2022-02-25 太原理工大学 Hydrogen sulfide source and sludge biological leaching reactor

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