LERANTEC

A high-tech enterprise committed to environmental protection and resource recycling technology promotion

Leran Technology's "high-efficiency biological deodorization" application project begins construction


Release time:

2018-11-26

"High-efficiency biological deodorization" is a unique patented technology independently developed by Leran Technology Team. It is a new product that has fully studied the waste gas from sewage treatment plants in the petrochemical industry and modified various parameters.

"High-efficiency biological deodorization" is a unique patented technology independently developed by Leran Technology Team. It is a new product that has fully studied the waste gas from sewage treatment plants in the petrochemical industry and modified various parameters. Through this project, VOC was successfully reduced to less than 100mg/m3. Recently, this technology was once again used in a large petrochemical enterprise in Shandong in November 2018.

The author has compiled basic information and briefly introduced the technology as follows, providing relevant information for the industry and owners to use. The specific process of treatment is to first fix the artificially screened special microbial flora on the filler. When the polluted gas passes through the filler surface in the early stage, those microbial flora that can obtain nutrient sources from the polluted gas will react under the appropriate temperature, humidity, and pH value. Under such conditions, it will grow and reproduce rapidly, and form a biofilm on the surface of the filler. When the odor passes through it, the organic matter is absorbed by the water layer on the surface of the biofilm and then adsorbed and degraded by microorganisms. The purified and regenerated water is reused. .

The essence of pollutant removal is to use odor as nutrients to be absorbed, metabolized and utilized by microorganisms. This process is a coordinated process of microorganisms and is relatively complex. It consists of physical, chemical, physicochemical and biochemical reactions.

Biological deodorization can be expressed as: pollutants + O2 → cell metabolites + CO2 + H2O

The transformation mechanism of pollutants can be represented by the following figure:

The Leran microbial deodorization process is divided into three steps:

(1) The odor comes into contact with water and dissolves into the water;

(2) The malodorous components in the aqueous solution are adsorbed and absorbed by microorganisms, and the malodorous components are transferred from the water to the microorganisms;

(3) The odorous components entering the microbial cells are decomposed and utilized by microorganisms as nutrients, thereby allowing the removal of pollutants.

Microbial deodorization is a process that uses the adsorption, absorption and degradation functions of microbial cells to odorous substances to treat odors. The main process is as follows: through the collection pipe, the exhaust fan collects the odor to the biological filter deodorization device. After being humidified by the humidifier, the odor enters the biological filter body and is then adsorbed, absorbed and degraded by the filler microorganisms. Remove odor components.

The main body of the biological deodorization device is a closed biological filter, which adopts a fixed point source emission form. The outer layer is made of fiberglass plates, and the inner frame of the box is made of carbon steel that has been treated with anti-corrosion, which has sufficient rigidity; the inner wall of the box is made of glass fiber reinforced plastics; insulation materials are used between the inner and outer walls to ensure that the equipment has a heat preservation function. All fasteners on the equipment are Made of stainless steel SS304.

The filter material support layer inside the equipment uses appropriately sized fiberglass grating plates + stainless steel mesh to support the weight of the filler. The filter plates leave a certain gap to ensure that the odor can pass through the biological system evenly. The upper part of the pool body is equipped with an inspection port and an exhaust port, and the side is equipped with an observation port, an air inlet, etc., and a gas sampling port is provided on the suction duct and exhaust duct in the front section of the main equipment. To facilitate on-site testing of treatment effects. Each connection port adopts standard flange, and the pipe connection is equipped with corresponding expansion joint. All fasteners on the equipment are made of stainless steel SS304, and the overall color of the equipment is coordinated with the surrounding environment!

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