1. A/O biological contact oxidation process is used as the main process, elastic three-dimensional fillers are set in the A-level pool, and three-dimensional columnar elastic fillers are set in the O-level pool, with large specific surface area and high microbial activity, which can quickly remove organic pollutants and have a good denitrification effect. .The specific surface area of the filler is 16-20 times that of the ordinary solid filler, which shortens the biochemical time and greatly reduces the floor space. 2. The equipment can be buried underground: basically does not occupy the surface area, does not need to build a house, heat preservation, and the surface can be greened for driving. 3. Easy to manage and maintain. 4. Small impact on the surrounding environment.
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