Sewage treatment method adopting baffle plate and membrane-aeration coupling device

Abstract

The invention discloses a sewage treatment method adopting a baffle plate and a membrane-aeration coupling device. A coupling reactor is formed by putting a well-trained membrane-aeration assembly in a third upstream compartment of a stably operating anaerobic baffle plate reactor. The process flow comprises the following steps of: carrying out an anaerobic reaction on sewage in a first upstream compartment of the anaerobic baffle plate reactor; carrying out an anaerobic reaction in a second upstream compartment of the anaerobic baffle plate reactor; carrying out an anaerobic reaction in the third upstream compartment of the anaerobic baffle plate reactor; carrying out an aerobic reaction and an anaerobic reaction in the membrane-aeration biological membrane assembly; carrying out an anaerobic reaction in a fourth upstream compartment of the anaerobic baffle plate reactor; and obtaining processed fresh water. By coupling the anaerobic baffle plate reactor with the membrane-aeration biological membrane reactor, the invention reaches the oxygen utilization rate approaching 100 percent, is suitable for growing and propagating nitrobacteria which grows slowly, improves the impact load resisting capacity of the membrane assembly, saves the equipment investment and operation cost and is easy to reach operation parameters needed for operation.

Description

Technical field [0001] The invention belongs to the technical field of water treatment equipment, in particular to a sewage treatment method adopting a baffle and a membrane aeration coupling device. Background technique [0002] Nitrogen in sewage is the main factor inducing the deterioration of water bodies. The removal of nitrogen-containing pollutants not only requires the synergy of a large number of exclusive microorganisms, but also has strict requirements on environmental conditions, which has always restricted the development of nitrogen removal processes. In particular, the realization of nitrogen removal in high-concentration organic wastewater is a problem in the water treatment industry. At present, anaerobic and aerobic cascade methods are commonly used at home and abroad to treat high-concentration organic nitrogen-containing wastewater. However, this type of process not only has a long process, high capital construction cost, large area, but also requires additio...

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