A biological filter device system and treatment process for advanced sewage treatment

Abstract

The invention relates to a sewage deep treatment biofilter device system and a treatment process. The sewage deep treatment biofilter device system comprises a biofilter, a sewage and ozone supply system, a backwash water supply system, a backwash air supply system and a water outlet system, wherein the top of the biofilter is open, the biofilter is internally and sequentially provided with an overflow chamber, a catalytic oxidation layer, a filter material layer and an air-water-distribution chamber from top to bottom; an uniform air-water distributor is arranged at the bottom of the catalytic oxidation layer; a filter material supporting plate is arranged between the filter material layer and the air-water-distribution chamber; and a long-handle filter head is fixed on the filter material supporting plate. By virtue of the treatment process of the device system, hardly-degradable pollutants generated after the secondary biochemical treatment is performed in such industries as petrochemical engineering can be effectively decomposed, compared to the existing ozone aeration manner, the treatment process has the advantages of fast mixing and efficient catalysis, the cost in water production can be effectively reduced and residual oxygen generated after residual ozone is decomposed can be effectively utilized and the energy consumption during the operation of the device is decreased.

Description

technical field [0001] The invention relates to a sewage advanced treatment biological filter device system and a treatment process, belonging to the field of sewage treatment. Background technique [0002] With the increasing awareness of environmental protection, local governments have higher and higher requirements for environmental protection, and put forward higher pollutant discharge standards for sewage receiving water bodies of sewage treatment plants, and upgraded to Class A discharge standards for some key river basins in recent years , some indicators (such as the proportion of refractory organic matter COD) removal requirements are more stringent. [0003] Refractory organic pollutants (non-biochemically soluble organic matter) in petrochemical and other industries after secondary biochemical treatment are difficult to remove, and are easy to accumulate in organisms, becoming a potential source of pollution in discharged water. If reused in production, it is easy...

AI Technical Summary

Problems solved by technology

[0003] Refractory organic pollutants (non-biochemically soluble organic matter) in petrochemical and other industries after secondary biochemical treatment are difficult to remove, and are easy to accumulate in organisms, becoming a potential source of pollution in discharged water. If reused in production, it is easy to treat the reused water The system causes organic contamination, which reduces its service life

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