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

A technology of bioleaching and synchronous coupling, which is applied in the fields of sludge treatment, air, and water, can solve the problems of increasing operation and treatment costs, and achieve the effects of omitting the odor treatment system, reducing treatment costs and efficient absorption

Inactive Publication Date: 2016-02-03
山西沃浦零碳科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problem that the existing sludge bioleaching needs to add additional reducing sulfur, iron and other nutritional substrates, and the odor treatment adopts biological or ion deodorization methods, which increase the operation and treatment costs. To provide a method for synchronous coupling of sludge bioleaching conditioning and odor purification

Method used

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

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Experimental program
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Effect test

Embodiment 1

[0018] A method for sludge bioleaching conditioning synchronously coupled with odor purification, comprising the following steps:

[0019] 1) Use the odor containing hydrogen sulfide and ammonia as the gas source, and use the induced draft fan to collect the odor;

[0020] 2) Control the sludge concentration of the solution in the bioleaching tank to 3%, add absorbent chemicals to the bioleaching tank, the amount of absorbent chemicals added is 5g / L, pressurize the odor and pass it into the bioleaching tank For aeration, the aeration volume is 0.1m 3 / (m 3 *min), utilizing the metabolism of the absorption agent and bioleaching microorganisms to realize the absorption and degradation of hydrogen sulfide and ammonia in the odor, thereby purifying the odor; wherein, the absorption agent is sodium thiosulfate;

[0021] 3) Add the excess sludge produced by the sewage treatment plant into the bioleaching tank, and under the action of bioleaching microorganisms, the sludge is condi...

Embodiment 2

[0023] A method for sludge bioleaching conditioning synchronously coupled with odor purification, comprising the following steps:

[0024] 1) Use the odor containing hydrogen sulfide and ammonia as the gas source, and use the induced draft fan to collect the odor;

[0025] 2) Control the sludge concentration of the solution in the bioleaching tank to 3%, add absorbent chemicals to the bioleaching tank, the amount of absorbent chemicals added is 15g / L, pressurize the odor and pass it into the bioleaching tank Aeration is carried out, the aeration rate is 2.0m 3 / (m 3 *min), using the metabolism of absorption agents and bioleaching microorganisms to realize the absorption and degradation of hydrogen sulfide and ammonia in the odor, thereby purifying the odor; Sodium sulfate and potassium permanganate;

[0026] 3) Add the excess sludge produced by the sewage treatment plant into the bioleaching tank, and under the action of bioleaching microorganisms, the sludge is conditioned...

Embodiment 3

[0028] A method for sludge bioleaching conditioning synchronously coupled with odor purification, comprising the following steps:

[0029] 1) Use the odor containing hydrogen sulfide and ammonia as the gas source, and use the induced draft fan to collect the odor;

[0030] 2) Control the sludge concentration of the solution in the bioleaching tank to 1%, add absorbent chemicals to the bioleaching tank, the amount of absorbent chemicals added is 8g / L, pressurize the odor and pass it into the bioleaching tank Aeration is carried out, the aeration volume is 13.0m 3 / (m 3 *min), using the metabolism of the absorption agent and bioleaching microorganisms to realize the absorption and degradation of hydrogen sulfide and ammonia in the odor, thereby purifying the odor; wherein, the absorption agent is capable of producing precipitation with hydrogen sulfide The ferrous salt of the substance;

[0031] 3) Add the excess sludge produced by the sewage treatment plant into the bioleach...

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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

technical field [0001] The invention relates to the technical field of water, air and sludge treatment, in particular to a method for sludge biological leaching conditioning synchronously coupled with odor purification. Background technique [0002] Activated sludge method is the main process of sewage treatment at present, in the process of treatment, a large amount of residual sludge will be produced. At present, the amount of residual sludge produced by municipal sewage treatment in my country has reached about 40 million tons per year. Since sludge contains a large number of pollutants and pathogenic microorganisms, it must be treated and disposed of. In addition, during the sewage treatment process, due to the anaerobic fermentation of microorganisms, a large amount of odor containing hydrogen sulfide, ammonia and other pollutants will be produced. If not treated, it will seriously affect the health of the surrounding people and the staff of the sewage plant . [000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/02C02F11/12B01D53/80B01D53/52B01D53/58
CPCY02W10/20
Inventor 李超惠晓梅杨凯袁进
Owner 山西沃浦零碳科技有限公司