Integrated stepping water-feeding type multistage A/O intensifying denitrification device

Abstract

The invention relates to an integrated stepping water-feeding type multistage A / O intensifying denitrification device. A tank is arranged as three-layer and more coaxial cylinders or cuboids; an inner layer chamber is communicated with the bottom of a middle layer chamber, so as to form a hydrolysis acidification tank; folded plates are arranged in an outer layer chamber, so that the outer layer chamber is separated into six and more cabinets; all the areas of the outer layer chamber are filled with floating balls, so as to form a multi-stage baffling floating biochemical tank; the hydrolytic acidification effluent flows into an O1 aerobic zone, an A1 anoxic zone, an A2 anoxic zone and an A3 anoxic zone under the effect of gravity in a stepping water-feeding manner; the effluent flows out from an effluent weir at the upper end of the last stage of aerobic zone. The invention adopts the integrated stepping water-feeding type multistage A / O intensifying denitrification device, with a multilayer coaxial cylinder or cuboid structure combined with anaerobic catalytic oxidation, stepping water feeding and multi-stage baffling floating biochemistry; the treating process is free from the mixed liquor backflow, sludge backflow and back wash operation processes; the required mechanical equipment is few; the operation management is simple; the unattended operation can be realized.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to an integrated multi-stage A / O enhanced denitrification device with point-by-point water inlet. Background technique [0002] In recent years, urban sewage has been widely and effectively treated, and the treatment of scattered point-source domestic sewage such as rural domestic sewage, sewage from expressway service stations, and domestic sewage from remote military camps has become the focus of water pollution prevention and control. The integrated sewage treatment device is an effective way to treat scattered point source domestic sewage. However, the poor effect of biological nitrogen and phosphorus removal and the difficulty of unattended operation are two major problems that have plagued the operation and management of integrated sewage treatment plants for a long time. Under the condition of limited biological phosphorus removal effect, supplemented by...

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Problems solved by technology

[0004] In order to solve the two problems of poor biological denitrification effect and difficulty in unattended operation of the integrated sewage treatment device in the field of scattered point source domestic sewage treatment, the present invention provides an integrated unit with less connecting pipelines, fewer facilities and equipment, compact structure, and simple operation and management. Point-inlet multi-stage A / O enhanced denitrification device

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