Biological nitrogen and phosphorus removal process of sewage and matched device of V-shaped biological aerated filter pool

Abstract

The invention relates to a biological nitrogen and phosphorus removal process of sewage and a matched device of a V-shaped biological aerated filter pool, belonging to the field of sewage treatment. The biological nitrogen and phosphorus removal process of sewage of the V-shaped biological aerated filter pool is characterized in that sewage enters a biological filter medium layer from the upper part of the V-shaped biological aerated filter pool and is subjected to nitratlon reaction and denitrification reaction in the biological filter medium layer, and the sewage is sequentially discharged from the bottom of the biological aerated filter pool through a fine filtering layer, a support layer and a filter head. The biological nitrogen and phosphorus removal process of sewage of the V-shaped biological aerated filter pool gets rid of the main flow type of upward flow light biological aerated filter pool, adopts a downward flow type, and is additionally provided with the fine filtering layer, thereby the quality of yield water is stable and superior, and the invention is suitable for deep sewage treatment and pretreatment of slightly polluted source water.

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