Pool bottom structure of novel moving bed bio-membrane reactor

Abstract

The invention discloses a pool bottom structure of a novel moving bed bio-membrane reactor, which belongs to the technical field of sewage treatment. The structure is mainly characterized in that: the bottom of the moving bed bio-membrane reactor is provided with prisms with rectangular sections at certain intervals; the lengths, widths and heights of the prisms are designed to form equilateral prisms or in-equilateral prisms according to the length and the height of a pool body; and a perforated aeration pipe is arranged between the prisms. The structure prevents local accumulation of carries or fillers from affecting the treatment effect, overcomes the defect of pool body structure influence in the present moving bed amplification process, and can reform the pool bodies of different structures. The structure is simple and low in energy consumption; and the method is simple to operate, can be widely applied to reformation of the conventional sewage treatment plant and promotion of treatment capability, and has good application prospect.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, in particular to the bottom structure of a novel moving bed biofilm reactor capable of transforming water treatment pools Background technique [0002] With the increasingly stringent discharge standards of sewage treatment and the gradual increase of sewage discharge, the treatment load of existing sewage treatment plants has been difficult to meet the new requirements. Most of the existing sewage treatment plants have no land available, and with the increasing shortage of urban land, it is becoming more and more difficult to acquire land for the construction of sewage treatment plants. [0003] The Moving Bed Biofilm Reactor (MBBR for short) is a new type of sewage treatment equipment that appeared in the mid-1980s. It combines the two processes of activated sludge method and biofilm method. The core is to add suspended fillers with a density close to water to the reactor as a carrier...

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Problems solved by technology

[0004] The purpose of the present invention is to propose a new type of tank bottom structure for moving bed biofilm reactors for the situation that the carrier is partially accumulated in the reactor, the fluidization effect is poor, and the standards for different pool bodies are inconsistent. The cross-section of the tank bottom of the moving bed biofilm reactor is a triangular triangular prism. The triangular prism is designed as an equilateral triangular prism or a unequal triangular prism. Perforated aeration tubes are arranged between the triangular prisms so that the carrier During the fluidization process, due to gravity, the carrier slides along the slope of the triangular prism to the perforated aeration tube and gathers and settles to the bottom of the triangular prism. The carrier is blown up again through perforated aeration, which can reduce the presence of air in the reactor. The "dead zone" of the reactor, and the setting of the triangular prism is not affected by the length, width and height of the reactor, and the movement of the carrier can be realized

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