Device and method for processing gases with offensive odor by utilization of biofiltration-active carbon combination method

Abstract

The invention belongs to the waste gas treatment technology field, and especially relates to a device and method for processing gases with offensive odor by utilization of a biofiltration-active carbon combination method. The device is composed of a negative pressure collection unit, a gas collection pipe, a blower fan, a biofiltration unit and an active carbon adsorption unit. A gas distribution device is arranged at the bottom of the biofiltration unit. The biofiltration unit is filled with light active biological filling materials. A nutrient solution and spraying liquid inlet is arranged in the side wall and a pipe connected with a spray thrower is installed on the side wall. The active carbon adsorption unit is loaded with composite active carbon adsorption filling materials. Gases with offensive odor of a generation source are collected by utilization of the negative pressure collection unit, and go into the biofiltration unit through a gas inlet pipe, most pollutants in the gases with offensive odor are degraded by bacteria and fungus microorganisms on the filling materials, the pollutants, which are not degraded, with low concentrations go into the active carbon adsorption unit through a gas conveying pipe, and are absorbed by the filled active carbon adsorbing agents and purification is achieved. The purified gases are discharged into the atmosphere from a discharging hole.

Description

technical field [0001] The invention belongs to the field of gas treatment, and in particular relates to a device and method for treating malodorous gas by a combined method of biological filtration and activated carbon. Background technique [0002] A large amount of hydrogen sulfide, ammonia, methylamine, methyl mercaptan, Odor gases such as methyl sulfide and volatile organic compounds, which have the characteristics of strong irritation, low odor threshold, and great environmental hazards. In order to protect human health and safety and reduce the harm to the environment, the purification of malodorous gases has become a practical problem that needs to be solved urgently. [0003] Existing malodorous gas treatment technologies include biological treatment, adsorption, absorption, catalysis, and incineration. The principles of different treatment technologies are different, and each has its scope of application and advantages and disadvantages. For example, biological t...

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Problems solved by technology

[0004] Odor gas has a wide range of influence and is difficult to deal with. Although many treatment technologies can deal with odor gas, most of them are not yet mature and perfect. and other problems, or high investment and operating costs, complex management and operation, prone to secondary pollution and other problems

Especially due to the complex components and different concentrations of malodorous gases in different industries, the treatment is relatively difficult. Most of these single treatment technologies and equipment have disadvantages such as low treatment efficiency, high investment and operating costs, or secondary pollution.

[0005] In the past, malodorous gas treatment often used a single treatment technology, and the types of substances removed and the removal capacity were limited. Therefore, the efficient removal of various odorous substances by various technologies could not be effectively utilized, and it was difficult to discharge the gas up to the standard.

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