Device and method for purification treatment of gas of medical waste non-incineration treatment
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A technology for purification and treatment of gases, applied in chemical instruments and methods, separation methods, air quality improvement, etc., can solve problems such as odor emissions, achieve stable deodorization, and ensure effectiveness
Inactive Publication Date: 2014-02-19
TIANJIN UNIV
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[0006] The purpose of the present invention is to overcome the deficiencies of the prior art, to provide a volatile organic compound (VOC) and malodorous gas purification device and method in the non-incineration treatment process of medical waste, and to solve the VOC and odor emission of the existing non-incineration treatment technology question
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Embodiment 1
[0043] Early driving
[0044] 1) The composition of the waste gas from the medical waste high-temperature steam treatment device is quite different. Before entering the next step treatment device, the VOCs content is sampled and analyzed every 10 minutes, and the total VOCs content is 300-1100mg / m3 3 The analysis results of 4 of them are as follows:
[0045] First time: total VOCs content 538mg / m 3 Roughly: Benzene 210mg / m 3 , toluene 115mg / m 3 , ethylbenzene 53mg / m 3 , Xylene 105mg / m 3 , other aromatic compounds 18mg / m 3 , Chloroform 22mg / m 3 , other low carbon halogenated alkanes 15mg / m 3 .
[0046] The second time: the total content of VOCs is 1156mg / m 3 Roughly: Benzene 562mg / m 3 , toluene 267mg / m 3 , ethylbenzene 131mg / m 3 , Xylene 85mg / m 3 , other aromatic compounds 55mg / m 3 , Chloroform 28mg / m 3 , other low carbon halogenated alkanes 28mg / m 3 .
[0047] The third time: the total content of VOCs is 840mg / m 3 Roughly: Benzene 425mg / m 3 , toluene 145mg / m...
Embodiment 2
[0059] After driving stably
[0060] 1) The composition of the waste gas from the medical waste high-temperature steam treatment device is quite different. Before entering the next step treatment device, the VOCs content is sampled and analyzed every 10 minutes, and the total VOCs content is 300-1100mg / m3 3 , and its composition is the same as the example one step (1).
[0061] Pass the exhaust gas into the gas buffer tank.
[0062] 2) The pressure-stabilized exhaust gas from the buffer tank is passed into the automatic temperature control device, which is composed of a heat exchanger and a thermometer, and can freely control the temperature of the outlet gas. Adjust the device to maintain the outlet exhaust gas temperature at 25-35°C.
[0063] 3) Let the temperature-controlled exhaust gas flow into the air inlet at the lower end of the deodorization tower. The interior of the deodorization tower is divided into three sections. An exhaust fan is connected to the upper end o...
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Abstract
The invention discloses a device and a method for purification treatment of gas of medical waste non-incineration treatment. The device and the method comprise the following structure and the following treatment process: exhaust gas goes into a gas buffer tank, and online detection of the exhaust gas composition is carried out; then the exhaust gas goes into a gas pretreatment device and is subjected to heat exchange with a heat exchanger; next, the exhaust gas goes into the interior of a reaction tower through a pipeline and an inlet at the lower end of the reaction tower, then flows from bottom to top, and successively passes through microorganism filler layers, an activated carbon filler layer and a photocatalytic reaction layer; after being subjected to three-time purification in the tower, the exhaust gas is discharged from the top of the reaction tower, then goes into the bottom of a water washing device through a pipeline, and at the same time, goes into the top of the water washing device for elution with water; sewage is discharged from the bottom of the water washing device, sewage treatment is carried out, and the water-washed air is exhausted from the top of the water washing device. Three treatment means are reasonably combined to control VOC and odor components in the exhaust gas; and compared with a single method, the combined three treatment means have more thorough exhaust gas treatment, basically eliminate odors, and have the VOCs removal rate which reaches more than 95%.
Description
technical field [0001] The invention belongs to the technical field of environmental malodorous gas treatment, and more specifically relates to a device and method for non-incineration treatment of VOC and malodorous gas purification and treatment of medical waste. Background technique [0002] Medical waste refers to directly or indirectly infectious, toxic and other hazardous waste produced by medical and health institutions in the course of medical treatment, prevention, health care and other related activities. As the composition and source of medical waste, medical waste contains a large number of germs, viruses and chemical agents, which is the medium for the enrichment and transmission of pathogenic microorganisms, which can cause great harm to the environment and human body. It is a typical hazardous waste . At present, there are many technologies for the final treatment of medical waste, which can generally be divided into incineration treatment and non-incineratio...
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