Composite bacterial agent for degrading waste gas of coal chemical sewage station, preparation method and application

A compound bacterial agent and coal chemical technology, applied in biochemical equipment and methods, chemical instruments and methods, methods based on microorganisms, etc., can solve the problems of long film-hanging time, large site limit, and slow microbial growth, etc., to achieve The effect of shortening the film-hanging time, saving time and cost, and high efficiency of waste gas treatment

Inactive Publication Date: 2020-07-07
青岛光华环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The key to the biological method is microbial strains. High-efficiency and environmentally friendly microbial strains can increase the speed of film formation and increase treatment efficiency. However, in current applications, the strains used for biological film formation are mostly aerobic sewage collected directly from sewage stations. Mud, this method often has the following problems: aerobic sludge has few effective bacteria and low microbial concentration; long film-hanging time and slow microbial growth; limited by the site, there are no reliable bacterial species in newly built or places without aerobic sludge source

Method used

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  • Composite bacterial agent for degrading waste gas of coal chemical sewage station, preparation method and application
  • Composite bacterial agent for degrading waste gas of coal chemical sewage station, preparation method and application
  • Composite bacterial agent for degrading waste gas of coal chemical sewage station, preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Determination of exhaust gas composition of coal chemical sewage station

[0028] After collecting the exhaust gas discharged from the coal chemical industry sewage station, gas chromatography gas detection is carried out. The analysis results show that the main pollutants are: ammonia, trimethylamine, hydrogen sulfide, methyl mercaptan, methyl sulfide, dimethyl disulfide, carbon disulfide and styrene, etc. gas.

[0029] (2) Biological trickling filter test device

[0030] Design and manufacture a processing capacity of 40m 3 / h, the residence time is 15s, the bio-trickling filter tower test equipment made of PP material, using volcanic rock, bark, shell powder, etc. Etc., supporting fans, water pumps, temperature control, gas flow meters, portable VOCs gas detectors, hydrogen sulfide detectors, ammonia gas detectors, etc.

[0031] Place the biological trickling filter tower near a coal chemical sewage station in Shaanxi, take the mixed waste gas from the sewage ...

Embodiment 2

[0052] Compared with Example 1, the composite bacterial agent is mixed according to the following mass parts ratio, Pseudomonas putida 20%, Bacillus subtilis 15%, Bacillus cereus 20%, Thiobacillus thiooxidans 20%, Lactobacillus plantarum 15% , Nitrifying bacteria 10%.

Embodiment 3

[0054] Compared with Example 1, the composite bacterial agent is mixed according to the following mass parts ratio, Pseudomonas putida 25%, Bacillus subtilis 20%, Bacillus cereus 20%, Thiobacillus thiooxidans 15%, Lactobacillus plantarum 10% , Nitrifying bacteria 10%.

[0055] 2. The application of the compound bacterial agent for degrading the waste gas of the coal chemical sewage station, the specific operation steps are as follows:

[0056] (1) Bacteria activation

[0057] Add the above-mentioned compound bacterial agents of Example 1, Example 2, and Example 3 to the portable strain activation device, add appropriate water, turn on the stirring device to fully dissolve, turn on the aeration and oxygenation, and turn on the temperature control device to maintain the temperature. At 25-30°C for 2-3 hours, activate the dormant microorganisms.

[0058] (2) bacteria hanging film

[0059] Add the activated bacteria solution to 40m according to the volume ratio of 5% 3 / h in t...

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Abstract

The invention relates to the field of microbial environmental protection, in particular to a composite bacterial agent for degrading the waste gas of a coal chemical sewage station, a preparation method and application. The composite bacterial agent for degrading the waste gas of the coal chemical sewage station is prepared from the following strains in mass ratio: 20%-30% of Pseudomonas putida, 15%-25% of Bacillus subtilis, 15%-20% of Bacillus cereus, 15%-20% of Thiobacillus thiooxidans, 10%-15% of Lactobacillus plantarum and 5%-10% of nitrifying bacteria. A method for obtaining the compositebacterial agent includes the steps that to aerobic activated sludge of the coal chemical sewage station is taken and added to a bio-trickling filter with the volume of 5% of circulating water, the waste gas of the coal chemical sewage station is introduced as a single carbon source, a certain temperature and pH are controlled, and taming culturing is carried out. The composite bacterial agent canbe applied to the degradation of the waste gas in the coal chemical sewage station and has the advantages of good degradation effect, low cultivation cost, short film hanging time and simple use, compared with a method of adding activated sludge, the time for removing more than 80% of hydrogen sulfide, ammonia gas and VOCs is shortened by half, and the national emission standard is reached.

Description

technical field [0001] The invention relates to the field of microbial environmental protection, in particular to a composite bacterial agent for degrading waste gas from a coal chemical industry sewage station, a preparation method and application thereof. Background technique [0002] Coal chemical sewage treatment plants will produce a large amount of odor containing volatile pollutants during normal operation, the main components are: ammonia, trimethylamine, hydrogen sulfide, methyl mercaptan, methyl sulfide, dimethyl disulfide, carbon disulfide and styrene Such malodorous gases seriously affect the normal production and life of the sewage treatment plant area and surrounding enterprises and residents, and endanger the health of residents. At present, the mainstream process for waste gas treatment of sewage plants in the coal chemical industry is: cover collection + alkali washing / acid washing + biological method + activated carbon adsorption. The process can be one or ...

Claims

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Application Information

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IPC IPC(8): C12N1/20C12N1/36B01D53/84C12R1/40C12R1/125C12R1/085C12R1/25C12R1/01
CPCB01D53/84B01D2251/95C12N1/20C12N1/36Y02A50/20
Inventor 王蛟秦
Owner 青岛光华环保科技有限公司
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