Biologically deodorizing method

A technology of biological deodorization and biological filler, which is applied in the direction of using microorganisms, separation methods, chemical instruments and methods, etc., can solve the problems of easy stickiness of organic fillers, complex biological trickling filter devices, etc., and achieve the goal of improving deodorization efficiency Effect

Inactive Publication Date: 2007-10-24
HARBIN INST OF TECH
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  • Claims
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Problems solved by technology

[0007] The object of the present invention is to provide a biological deodorization method in order to solve the shortcomings that the biological method can only remove low-concentration odor, the organic filler of the biological filter is easy to become sticky, and the device of the biological trickling filter is relatively complicated.

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specific Embodiment approach 1

[0026] Specific embodiment one: this embodiment adopts the method of immobilized biological filter to intermittently spray nutrient solution to remove odor, and the steps of this method are as follows:

[0027] 1. Cultivation of deodorizing microbial bacterial agents: Cultivate deodorizing microbial bacterial agents through the steps of "a. domestication culture, b. inoculation, c. purification, d. enrichment culture, e. mixing";

[0028] The process of the step "a. acclimatization and cultivation" is as follows: the activated sludge from the sewage treatment plant is taken out and inoculated on the activated carbon, and then put into the biofilter to feed H 2 S, NH 3 and H 2 S and NH 3 The mixed odor is used for acclimatization and cultivation, and the acclimatization and cultivation time is 1 to 6 months;

[0029] The process of "b. inoculation" is as follows: inoculate the cultured microorganisms on each activated carbon into heterotrophic sulfur-oxidizing bacteria cultu...

specific Embodiment approach 4

[0038] Specific embodiment four: In this embodiment, the immobilization process of the intermittent circulation physical adsorption method in step two is as follows: take the bacterial suspension prepared in step one, place it at a high place, and utilize a siphon to make the bacterial suspension flow into the container from top to bottom For the stuffed reactor, put the barrel under the reactor to connect the residual bacteria solution, and circulate the bacteria suspension several times until the number of bacteria in the effluent water no longer decreases. At this time, it is considered that the adsorption and interception of the activated carbon column to the bacteria has reached saturation, and the concentration of the feed is The mixed gas of hydrogen sulfide and ammonia of 45-55 mg / l is used for short-term domestication, and the volume concentration ratio of hydrogen sulfide and ammonia is 1:1 to form immobilized biological filler. Others are the same as in the first emb...

specific Embodiment approach 5

[0040] Specific embodiment five: In this embodiment, in step three, the nutrient solution is made of 0.02g glucose, 0.12g K 2 HPO 4 , 0.12g KH 2 PO 4 , 0.02g MgCl 2 ·6H 2 O, 0.4g NH 4 Prepare Cl, 0.001g ferric citrate and 100ml water; intermittently add nutrient solution. Specific operation method: first stop the air intake, empty the leachate from the reactor, and rinse 3 times with 25-40ml nutrient solution each time. Others are the same as in the first embodiment.

[0041] In this embodiment, there is no glucose in the nutrient solution that only removes ammonia.

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Abstract

The invention relates to a biological deodorization. It has solved the difficulty of biological method only being able to remove low degree odor with simple way. It goes like this: domesticating, inoculation, purification, enriched medium, hybrid to grow the deodorization biological sperm, then prepare fixed biochemical stuff, with the odor being filtered and deordorized. The feeding cycle for nutrient solution is 12h, inlet air flow is 0. 012-0. 1m3/h, average air density being 0-800mg/m3, volume charge of H2S being 0-124. 8mgs/kg active carbon . h, volume charge of alkaline being 0-110mgN/kg active carbon . h, temperature controlled within 20-30deg.C, air hanging period within 20-150s. It has high efficiency in deodorization, simple in equipment and economical in running expenses.

Description

technical field [0001] The invention relates to a biological treatment method for odor. Background technique [0002] Odor pollution, as one of the seven major environmental hazards in the world, has received extensive attention from all over the world. Odor pollution mainly comes from petrochemical, livestock slaughtering and meat processing, aquatic product processing, oil industry, oil refining, coking, gas, chemical fertilizer, pharmaceutical, leather manufacturing, paper making, synthetic materials, sewage treatment and garbage treatment and other industries. Traditional treatment techniques are mainly physical and chemical methods, and biological methods have gradually become one of the main methods for purifying odorous substances. Biological method is the process of using microorganisms to degrade or convert malodorous substances into odorless or low-odor substances. Compared with physical and chemical treatment methods, biological deodorization requires almost no ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/85C12N1/20C12N1/36
CPCY02A50/20
Inventor 徐桂芹石玉明闫波姜安玺
Owner HARBIN INST OF TECH
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