Biologic filtration method and device for purifying industrial organic waste gas
A technology of organic waste gas and biological filtration, applied in chemical instruments and methods, separation methods, air quality improvement and other directions, can solve the problems of affecting the biodegradation of functional microorganisms, cannot guarantee the treatment efficiency, and is not suitable for dealing with volatility, etc., and achieves stability. and efficient purification effect, improve stability and microbial diversity, avoid clogging effect
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[0064] Example 1: Treatment of waste gas from production workshops in the paint and coating industry
[0065] In this embodiment, the biological trickling filter tower C has a height of 2000 mm, a length of 1500 mm, and a width of 1500 mm, and the filling height of the filler is 1200 mm. Aeration tank volume is 0.5m 3 . Treatment of industrial waste gas is 400m 3 / h, the residence time of the gas in the combined packing is 15 seconds. The biological filter device is filled with composite fillers and used for the treatment of waste gas in the paint production workshop after the degradation of bacterial strains and domestication. When the average concentration of TVOCs (total volatile organic compounds) in the waste gas is about 58ppm, it drops to 3.48ppm after treatment. The average removal rate is 94%.
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[0066] Example 2: Treatment of common industrial waste gas
[0067] In this embodiment, after the bio-tricking filter tower C is filled with inorganic fillers, it is used to treat common industrial waste gas components such as toluene, xylene, styrene, acetone, methyl ethyl ketone, chloroform, etc. The biological trickling filter tower is 800mm high, with an inner diameter of 190mm, and filler The filling height is 340mm, and the aeration tank volume is 8L. The gas residence time in the empty bed of the combined packed bed is 30s. The treatment effect is shown in Table 1:
[0068] Table 1 Purification effect of biological filter device on different common industrial waste gas (mg / m 3 )
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[0070]
[0071] The above results show that the removal rate of common industrial waste gas is gradually increased by using the method and device of the present invention to treat industrial organic waste gas. After 5 days, the removal rate of easily degradable volatile organic waste gas b...
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