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Paleobacterium hominis and its application in removing sulfur-containing malodorous substances

A technology of Bacillus hominis and malodor, applied in the field of environmental management, can solve the problems of short service life, long microbial adaptation period and high packing density.

Active Publication Date: 2016-10-05
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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  • Paleobacterium hominis and its application in removing sulfur-containing malodorous substances

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0045] Example 1: A microbial active filler for removing sulfur-containing malodorous substances and its preparation method.

[0046] A microbial active filler for removing sulfur-containing malodorous substances, the filler is loaded with Ochrobactrum anthropi SL1, the preservation number of Ochrobactrum anthropi SL1 is CGMCC No.7400, and the filler is polyurethane foam piece;

[0047] The packing density is 0.9kg / m 3 , the porosity is 86%, the particle size is 30mm;

[0048] The microorganisms are attached to the filler in the form of bacterial suspension;

[0049] The mass ratio of the microbial suspension to the lightweight porous material is 100:10;

[0050] The concentration of Ochrobactrum anthropi SL1 cells in the microbial active filler is greater than 10 6 CFU / g

[0051] The preparation steps of the microbial active filler are as follows:

[0052] (1) Slant culture: prepare Ochrobactrum anthropi SL1 slant bacteria;

[0053] The slant medium of Ochrobactrum ant...

example 2

[0063] Example 2: A microbial active filler degrades H 2 S gas application.

[0064] Another object of the present invention is to utilize microbial active filler to carry out odorous gas treatment, especially in degrading H 2 For the application of S gas, the specific steps are as follows:

[0065] (1) Place the microbial active filler loaded with Ochrobactrum anthropi SL1 in a container, and pass H 2 S gas to H 2 S gas is the sulfur source to activate the microbial active filler; the activation time is 7 days;

[0066] The H 2 The concentration of S is 35ppm;

[0067] (2) Place the activated microbial active packing in the bioreactor, feed the gas containing sulfur-containing malodorous substances, and use Ochrobactrum anthropi SL1 to purify the sulfur-containing malodorous substances in the waste gas. The volume of the microbial active packing is 100m 3 , the total concentration of sulfide is 100ppm, and the gas flow rate is 1000m 3 / h, the purification temperature i...

example 3

[0069] Example 3: Use effect experiment (use the filler of Example 1 for the treatment of the following gases).

[0070] (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 residence time is 1-3mins, and it operates at room temperature. The intake concentration of hydrogen sulfide is: 14.86mg / m 3 , the output gas concentration is lower than 0.03mg / m 3 , which is lower than the emission standard of odorous pollutants formulated by the state, and the removal rate is higher than 99%.

[0071] (2) Used to treat sulfur-containing malodorous gases produced by sludge composting, the concentrations of hydrogen sulfide and ethanethiol are respectively 21.2mg / m 3 and 3.21mg / m 3 , the gas flow rate is 70m 3 / h, the residence time is 1-3mins, operating at room temperature, the removal rates of hydrogen sulfide and ethanethiol are both greater than 90%.

[0072] (3) Waste landfill, proce...

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Abstract

The invention discloses ochrobactrum anthropi SL1 and application thereof to removal of repugnant substances containing sulfur. Ochrobactrum anthropi SL1 is an isolate obtained from a reactor for treating repugnant substances containing H2S and the like in a water pollution control laboratory in Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. The strain is collected in China General Microbiological Culture Collection Center (CGMCC), with collection number of CGMCC No.7400. The strain can be used for preparing microbial active fillers, is used for purifying the repugnant substances containing sulfur and solving the problem of odor pollution produced in the processes of sewage, sludge and refuse treatment and composting, and has more than 90% of efficiency of degrading repugnant substances containing sulfur such as hydrogen sulfide, methanethiol, dimethyl sulfide and the like.

Description

Technical field: [0001] The invention belongs to the field of environmental treatment, and in particular relates to a microorganism for removing sulfur-containing malodorous substances and its application. 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 before discharging...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12N1/20B01D53/84B01D53/52B01D53/48C12R1/01
CPCY02A50/20
Inventor 李琳韩云平刘俊新
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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