Organic waste gas biological purification system and method

Abstract

The invention relates to an organic waste gas biological purification system and method. The system comprises a gas inlet pipe, a dust treatment device, a drying filter, a microbial filler filter tower, a biological liquid spray pump, a first spray device, a biofilm pool transfer water tank and a biofilm tank culture unit. The dust treatment device comprises a cyclone spray purification tower, a slag separation tank, a filler spray purification tower and a circulating water pump. The biofilm tank culture unit comprises a filtrate collection tank, a filtrate lifting pump, a biological exhaust fan, an MBBR biofilm tank and an oxygen supply fan. The system can effectively purify different sizes of dust particles in organic waste gas and dry them, reduce the biological purification load of thesubsequent microbial filler filter tower, and improve the purification effect. The nutrient solution in the MBBR biofilm tank is recycled so that the utilization rate of the nutrient solution is improved, the regeneration rate and activity of the flora in the MBBR biofilm tank are improved, the sustainability of the organism is improved and the overall investment operation cost is reduced.

Description

technical field [0001] The invention relates to the technical field of organic waste gas treatment, in particular to an organic waste gas biological purification system and process. Background technique [0002] In modern industrial production, some irritating organic waste gases will be produced along with the production process, and the direct discharge of these waste gases to the air will cause great harm to the environment, animals and plants. [0003] Existing organic waste gas purification generally adopts biological purification methods, while biological evolution often uses biological filter towers. The purification ability of the existing biological filter tower is low, and it can only treat the dust of large particles, but not the dust of small particles, so that the biological purification load of the microbial packing filter tower is large, and the purification effect is poor, which in turn affects the purification effect. As a result, the exhaust gas in the exh...

AI Technical Summary

Problems solved by technology

The purification ability of the existing biological filter tower is low, and it can only treat the dust of large particles, but not the dust of small particles, so that the biological purification load of the microbial packing filter tower is large, and the purification effect is poor, which in turn affects the purification effect. Cause exhaust gas in the exhaust air to not meet the standard

[0004] In addition, the spray liquid required by the existing biological filter tower cannot be recycled, resulting in high overall cost; there are also spray liquid recycling, but its utilization rate is low, the regeneration speed and activity of the flora are poor, and the biological weak persistence

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