Active sludge-biomembrane compounding integral sewage treating method and apparatus

Abstract

The invention discloses an activated sludge-biofilm composite integrated sewage treatment method. First, the sewage to be treated is introduced into an anoxic zone, and the sewage to be treated is stirred continuously so that the sewage to be treated and the activated sludge are fully mixed; The sewage is introduced into the aeration zone with fillers, and the activated sludge with suspended growth of microorganisms and the fixed biofilm are combined, and the sewage entering the aeration zone is aerated through continuous aeration or intermittent aeration; finally, the treatment The final sewage is introduced into the sedimentation area, and natural sedimentation realizes the separation of mud and water. The purified water formed after sedimentation is drawn from the upper part of the sedimentation area, and the sludge mixture formed after sedimentation flows back to the anoxic area, and the remaining sludge is directly discharged. The invention also relates to a treatment device designed according to the treatment method. The invention has the advantages of strong processing capacity, impact load resistance, simple operation, convenient management, and less occupied area, and is especially suitable for small and medium-sized towns.

Description

technical field [0001] The invention relates to a sewage treatment method, in particular to an activated sludge-biofilm composite integrated sewage treatment method, and also to a sewage treatment device designed according to the method, belonging to the technical field of sewage treatment and environmental protection. Background technique [0002] In recent years, with the implementation of my country's urbanization development strategy, the pace of construction of small and medium-sized towns has been significantly accelerated, and a large number of small and medium-sized towns have emerged one after another. At present, my country's small and medium-sized towns have grown to more than 20,000. While small and medium-sized cities and towns are promoting economic development, the environmental problems they bring are becoming more and more obvious, especially the sewage treatment capacity of small and medium-sized cities and towns is seriously lagging behind, and the problem...

AI Technical Summary

Problems solved by technology

[0003] In view of the shortcomings of the existing sewage treatment methods such as long process flow, complicated operation, low relative treatment capacity, poor impact load resistance, infrastructure investment and large floor area, the purpose of the present invention is to provide a sewage treatment capacity, impact resistance, etc. Load, simple operation, easy management, suitable for activated sludge-biofilm composite integrated sewage treatment method in small and medium-sized towns

Images