Intensive self-circulation microorganism enrichment comprehensive aeration sewage treatment tank and construction method thereof

The invention discloses an intensive self-circulation enriched microorganism comprehensive aeration sewage treatment tank and a construction method thereof. The sewage treatment tank comprises an anaerobic reaction tank, an enhanced comprehensive reaction tank connected with the anaerobic reaction tank, a multi-stage aerobic reaction tank connected with the enhanced comprehensive reaction tank, and an efficient rapid clarification tank connected with the multi-stage aerobic reaction tank. Through micro-aeration in the anaerobic reaction tank, retention time control and denitrification nitrogen utilization, cracking fermentation of the sludge is guaranteed, and a carbon source is provided; through the arrangement of the enhanced comprehensive reaction tank, dilution, self-circulation and stirring enhanced reaction of sewage in the tank are ensured; due to the arrangement of the multiple stages of aerobic reaction tanks, the aerobic reaction time and self-circulation treatment of the sewage are favorably prolon