Deep well aeration film bioreactor waste water treatment process and apparatus

Abstract

A deep-well aeration membrane biological reactor waste-water disposal process and a corresponding apparatus relate to the waste-water disposal technique field, aiming at solving the technical problems of further reducing occupied area and energy cost by the deep-well aeration waste-water disposal. The waste-water disposal apparatus comprises a deep well and a top trough; the top of the deep well is connected with the bottom of the top trough, and a liquid raising circulation system is arranged in the deep well. The apparatus is characterized in that the apparatus also comprises a membrane biological reactor connected with the top trough; a membrane element which is connected with a water outlet tube and is arranged on the upper-internal part of the membrane biological reactor; an aerationdevice which is connected with a fan and is arranged on the lower part of the membrane element; a sludge hopper is arranged on the lower (bottom) part of the membrane biological reactor; a sludge backflow pipe connected with the bottom of the top trough and a sludge-draining pipe connected with a sludge-removing device which are respectively arranged at the bottom of the sludge hopper and are controlled by valves respectively. The invention makes use of the suction of the circulation flow to the sludge backflow pipe to absorb the sludge to the deep well to be mixed with sewage. The invention is characterized in that the occupied area is small; the activated sludge has high density; the rest sludge is less and the energy cost is low.

Description

technical field [0001] The invention relates to wastewater treatment technology, in particular to a deep well aeration wastewater treatment process using a membrane bioreactor and a device thereof. Background technique [0002] Deep Shaft Process, also known as "ultra-deep water aeration" and "ultra-deep aeration", is a new type of wastewater treatment process, which was first developed by Imperial Chemical Industries Ltd. in 1968. Applying it to wastewater treatment, the world's first semi-productive deep well aeration device was built in Billingham, England in 1974. Since 1978, our country has started the development and research of deep well technology, and introduced various forms of deep well devices on the basis of absorbing the latest foreign achievements. At present, the domestic deep well aeration process has been successfully applied in the treatment of non-biodegradable wastewater discharged from pharmaceutical and chemical industries and high-concentration organ...

AI Technical Summary

Problems solved by technology

[0004] The deep well aeration process has the advantages of small footprint, long service life, high oxygen utilization rate, low output rate of excess sludge, no odor, and no seasonal temperature interference. High level is not enough, and its effluent water quality still cannot meet the reuse water standard

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