Biological controlled reactor for active sludge filamentous bacterium and technique

Abstract

The invention discloses an ecological controlling reactor of activated sludge filamentous bacterium and craft, which comprises the following steps: including intake port 2, water outlet 9 and reaction zone 4; fixing micro animal constitute filler 5 and some hydraulic barriers 7; seeding tubifex on the micro animal composite filler; mixing active sludge in aero-tank and water mixture; leading to reactor; reducing and controlling filamentous bacterium through treatment; advancing sludge deseription; increasing flow path though flowing baffle; reaching the purpose of inhibiting foam and bulking. This invention can repair active sludge, which can solve problems of sludge bulk and foam caused by filamentous bacterium.

Description

technical field [0001] The invention relates to the field of environmental protection, in particular to the restoration of activated sludge in sewage treatment. Background technique [0002] Urban and industrial wastewater is mostly treated by the activated sludge method. During the sewage treatment process of the activated sludge method, most sewage plants are prone to abnormal problems such as activated sludge expansion and foam. The cause of sludge bulking and foaming is mainly the abnormal proliferation of filamentous bacteria. When they erupt, the activated sludge is connected to each other to form a floc network of filamentous bacteria, the active structure is loose, and the sedimentation performance becomes poor; when there is When there is oil or the temperature is low, the sludge will form sticky and stable chocolate-colored foam in the biochemical reaction tank, which will reduce the oxygenation efficiency of the biochemical tank, and the sludge will be lost becaus...

AI Technical Summary

Problems solved by technology

The commonly used control technology is to add chemical oxidants to add chlorine. Although ozone or hydrogen peroxide is temporarily effective, it does not cure the root cause and has large side effects, which can easily lead to the death of other bacteria in activated sludge. At the same time, adding chlorine to effluent water is prohibited in Europe.

However, the specific control method is not clear about the relationship between the microorganisms, and the measures taken often have no obvious effect or lose sight of the other. For example, the aerobic (anaerobic) selector is determined according to the growth relationship of microorganisms. The actual sludge bulking and Although the foam control technology is effective for the expansion and foam caused by most filamentous bacteria, it is ineffective against filamentous bacteria such as microthrix; the mud age control technology can discharge the filamentous bacteria through mud discharge, but the mud age is too short. Make the loss of nitrifying bacteria, affect the denitrification effect

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