Improved UCT sewage disposal system and method for treating same

Abstract

The invention discloses an improved UCT sewage disposal system and a treating method thereof, and belongs to the sewage disposal field. The system comprises an anaerobic reaction tank, an anoxic reaction tank and an aerobic reaction tank, wherein, a sewage inlet and a sewage outlet are formed on the anaerobic reaction tank; a rotary cutting eddy current vertical type stirring device is arranged in the anaerobic reaction tank; the anaerobic reaction tank is communicated with the anoxic reaction tank through the sewage outlet; the tail end of the anoxic reaction tank is connected with the anaerobic reaction tank through a recirculation pipe of a mixed liquor; a water outlet of the tail end of the anoxic reaction tank is connected to a water inlet of the front end of the aerobic reaction tank through a conveyance canal; a side wall of the anoxic reaction tank and a side wall of the tail end of the aerobic reaction tank are shared walls; a plurality of recirculation holes of the mixed liquid for recirculating from the aerobic reaction tank to the anaerobic reaction tank are formed on the shared walls; a recirculation pump of the mixed liquid are arranged on the recirculation holes of the mixed liquid; a plurality of aeration devices are arranged in the aerobic reaction tank; and a treating water outlet is formed at the tail end of the aerobic reaction tank. The system has the advantages of simple structure and low operating cost.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to an improved UCT sewage treatment system and treatment process. Background technique [0002] Since the "Pollutant Discharge Standards for Urban Sewage Treatment Plants" (GB18918-2002) clearly stipulates the nitrogen and phosphorus in the effluent of sewage treatment plants. Therefore, not only the treatment process of urban sewage treatment plants is required to remove organic pollutants, but also plant nutrients such as nitrogen and phosphorus, and the treatment process of sewage treatment plants is required to have the function of nitrogen and phosphorus removal. Synchronous biological denitrification and phosphorus removal processes that can remove organic pollutants and simultaneously remove phosphorus and nitrogen are widely used in existing urban sewage treatment plants. With anaerobic, anoxic and aerobic environments, and A 2 Both / O process and UCT process can realize th...

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Problems solved by technology

[0004] Based on the problems existing in the above-mentioned prior art, the purpose of the embodiment of the present invention is to provide an improved UCT sewage treatment system and treatment method to solve the existing UCT process Due to the addition of a first-level return system to the system, the system is complicated, the operating cost and the engineering cost are high.

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