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Water micro-bacteria active filler and preparation method thereof

An active filler and water microbacteria technology, applied in the field of environmental management, can solve the problems of slow start of bioreactors, microorganisms are not easily attached, and microorganisms have a long adaptation period, and achieve the effects of small resistance, shortened start-up period, and short adaptation period.

Active Publication Date: 2016-03-30
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compost materials, wood chips, bark and other carriers have small specific surface area, high filling density, large pressure loss, perishable, and short service life; the surface of Raschig rings and ceramsite is smooth, and microorganisms are not easy to attach and are more likely to be lost
The inoculum of the bioreactor for purifying sulfur-containing and malodorous substances is mostly activated sludge from the sewage treatment plant, the microbial adaptation period is long, and the bioreactor starts slowly

Method used

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  • Water micro-bacteria active filler and preparation method thereof

Examples

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Comparison scheme
Effect test

example 1

[0042] Example 1: A sewage water microbial active filler for removing sulfur-containing malodorous substances and its preparation method.

[0043] The sewage water micro-bacteria active filler is attached with sewage water micro-bacteria SU1 bacterial suspension; the preservation number of sewage water micro-bacteria (Aquamicrobium defluvii) SU1 is CGMCCNo.7399;

[0044] The filler is a polyurethane foam block.

[0045] The packing density is 0.8kg / m 3 , the porosity is 86%, the particle size is 20mm;

[0046] The microorganisms are attached to the polyurethane foam block in the form of bacterial suspension;

[0047] The mass ratio of the microbial suspension to the polyurethane foam block is 200:10.

[0048] The bacterium concentration of the sewage water microbacteria SU1 in the described sewage water microbacteria active filler is greater than 10 6 CFU / g (活 性填料) .

[0049] The preparation steps of the micro-bacteria active filler in sewage water are as follows:

[0...

example 2

[0060] Example 2: A sewage water microbial active filler degrades H 2 S gas application.

[0061] Sewage water bacteria (Aquamicrobium defluvii) SU1 (CGMCCNo.7399), the bacterial agent prepared by the bacteria in the gas flow rate of 1.0-50m 3 / h, residence time 1-3min, temperature 20-37℃, hydrogen sulfide concentration 0.1-50mg / m 3 , Methyl mercaptan 0.1-20mg / m 3 , The degradation efficiency of hydrogen sulfide, methyl mercaptan and other sulfur-containing odorous substances can reach more than 85%. It can be used to purify the gas of sulfur-containing and odorous substances, and solve the problem of odor pollution caused by sewage, sludge treatment, garbage treatment and composting.

[0062] The use of sewage water microbial active fillers for odor gas treatment, especially in the degradation of H 2 For the application of S gas, the specific steps are as follows:

[0063] (1) Put the sewage water micro-bacteria active filler with sewage water micro-bacteria SU1 in a con...

example 3

[0067] Example 3: Use effect experiment (use the filler in Example 1 for the following gas treatment).

[0068] (1) Treat the sulfur-containing malodorous gas escaped from the sludge sedimentation tank of the sewage plant, and the gas flow rate is 35m 3 / h, the sewage water microbial active filler described in example 1 is put into it, the residence time is 1~3mins, operates under the room temperature condition. The intake concentration of hydrogen sulfide is: 8.32mg / m 3 , the output gas concentration is 0.03mg / m 3 , which is lower than the emission standard of odorous pollutants formulated by the state, and the removal rate reaches 99.6%.

[0069] (2) Put the sewage water micro-bacteria active filler described in example 1 into it for processing the sulfur-containing malodorous gas that sludge composting produces, the concentration of hydrogen sulfide and ethanethiol is respectively 15.4mg / m 3 and 1.67mg / m 3 , the gas flow rate is 70m 3 / h, the residence time is 1-3mins,...

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Abstract

The invention discloses an Aquamicrobium defluvii active filler and a preparation method thereof. The Aquamicrobium defluvii SU1 disclosed by the invention is an isolate obtained by treating a reactor containing H2S and other odorants in Water Pollution Control Laboratory in Research Center for Eco-Environmental Sciences of Chinese Academy of Sciences; and the strain is collected in China General Microbiological Culture Collection Center, and the collection number is CGMCC No. 7399. The Aquamicrobium defluvii active filler without sulfur-containing odorants has the advantages of large specific area, high porosity, high air permeability, small resistance, high bacterial cell loading capacity and low loss tendency; the active filler with the Aquamicrobium defluvii SU1 has higher efficiency for degrading hydrogen sulfide; and the Aquamicrobium defluvii active filler also has the advantages of low filling density, low pressure and low tendency to corrosion and deformation in the waste gas purification bioreactor, and can be used for a long time and applicable to complex treatment conditions.

Description

technical field [0001] The invention belongs to the field of environmental treatment, in particular to an active filler for removing sulfur-containing malodorous substances, a preparation method and application thereof. Background technique [0002] In the process of sewage, sludge treatment, garbage treatment and composting, a large amount of odorous gas will be produced. Sulfur-containing substances such as hydrogen sulfide, mercaptan, sulfide, and carbon disulfide are common odorous substances in the odorous gas. The malodorous substance escapes into the atmosphere and spreads everywhere with the flow of air, causing pollution to the surrounding environment and causing harm to human health. At present, the control of air pollution and odor has attracted more and more attention, and many countries have established strict emission standards. Strictly control the discharge of pollutants in the exhaust gas, and require enterprises to take corresponding control measures befor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/81B01D53/48B01D53/50B01D53/52
Inventor 李琳刘俊新
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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