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Composite microbial active filler for removing sulfur-containing malodorous substances and its preparation and application

A technology of composite microorganisms and composite microorganisms, which is applied in the field of environmental governance and can solve problems such as easy loss, perishability, and difficult attachment of microorganisms

Active Publication Date: 2016-03-16
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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  • Composite microbial active filler for removing sulfur-containing malodorous substances and its preparation and application
  • Composite microbial active filler for removing sulfur-containing malodorous substances and its preparation and application

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0063] Example 1: A microbial active filler for removing sulfur-containing malodorous substances and its preparation method.

[0064] A composite microbial active filler for removing sulfur-containing malodorous substances, the filler is loaded with Ochrobactrumanthropi SL1 and Aquamicrobium defluvii SU1; the preservation number of Ochrobactrumanthropi SL1 is CGMCCNo.7400 , the preservation number of Aquamicrobium defluvii SU1 is CGMCCNo.7399;

[0065] The filler is a polyurethane foam block;

[0066] The packing density is 0.8kg / m 3 , the porosity is 86%, the particle size is 30mm;

[0067] The composite microorganism is attached to the filler in the form of bacterial suspension;

[0068] The mass ratio of the composite microbial suspension to the polyurethane foam block is 100:10;

[0069] The concentration of Pallidus human SL1 cells in the composite microbial active filler is greater than 10 6 CFU / g, the bacterial concentration of water bacteria SU1 is greater than 10...

example 2

[0085] Example 2: A microbial active filler degrades H 2 S gas application.

[0086] Another object of the present invention is to utilize composite microorganism 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:

[0087] (1) Place the composite microbial active filler containing human Pallidinus SL1 and water microbacteria SU1 in a container, and pass H 2 S gas to H 2 S gas is the sulfur source to activate the composite microbial active filler; the activation time is 7 days;

[0088] The H 2 The concentration of S is 100ppm;

[0089] (2) The activated composite microbial active filler is placed in a bioreactor, and the gas containing sulfur-containing odorous substances is introduced, and the sulfur-containing odorous substances in the exhaust gas are purified with Pallidinus anthropus SL1 and water microbacteria SU1, and the volume of the composite microbial active filler 100m 3...

example 3

[0091] Example 3: Use effect experiment (the filler prepared in Example 1 was subjected to the following three experiments respectively).

[0092] (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 0.03mg / m 3 , which is lower than the emission standard of odorous pollutants formulated by the state, and the removal rate reaches 99%.

[0093] (2) Used to treat sulfur-containing malodorous gases produced by sludge composting, the concentrations of hydrogen sulfide and ethanethiol are 18mg / m3 3 and 2.53mg / 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%.

[0094] (3) Landfill, disposal contains...

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Abstract

The invention discloses a compound microbial active filling material for removing sulphur-containing repugnant substances, as well as preparation and application of the compound microbial active filling material. Ochrobactrum anthropi SL1 and aquamicrobium defluvii SU1 related in the invention are isolated bacteria obtained in a reactor for processing repugnant substances, such as H2S, in a water pollution control laboratory of the ecological environment research centre of the Chinese academy of sciences. The bacterial strains are preserved in the general microbial centre of the Chinese general microbial strain preservation and management committee. The preservation numbers are CGMCC No.7400 and CGMCC No.7399 respectively. The compound microbial active filling material disclosed by the invention has the advantages of being large in specific area, high in porosity, good in air permeability, low in resistance, high in bacterial cell loading capacity and less prone to run away; and because of being loaded with ochrobactrum anthropi SL1 and aquamicrobium defluvii SU1, the compound microbial active filling material is difficult to decay and deform in a bioreactor for purifying waste gas, and therefore, the compound microbial active filling material can be used for a long time and is applied to complex processing conditions.

Description

technical field [0001] The invention belongs to the field of environmental treatment, in particular to a composite microbial 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 con...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/84B01D53/48B01D53/50B01D53/52
CPCY02A50/20
Inventor 李琳刘俊新
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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