Sub-grid adjustable anaerobic-anoxic-aerobic biochemical reactor

Abstract

The invention discloses a sub-grid adjustable anaerobic-anoxic-aerobic biochemical reactor which is in the form of a covered way and comprises 24 sub-grid tanks (A), wherein the 24 sub-grid tanks (A) are divided into an anaerobic segment, an anoxic segment and an aerobic segment; a trough (B) is formed between every two sub-grid tanks from the first sub-grid tank (A) to the twelfth sub-grid tank (A); division plates (C) are inserted into the troughs (B) to realize the segmentation of the anaerobic segment, the anoxic segment and the aerobic segment; a water passing orifice is formed in the lower part of each trough (B); and an aerator is arranged at the lower part of each sub-grid tank (A) of the reactor. The biochemical reactor is reasonable in design and compact in structure, the relative residence time of the anaerobic segment, the anoxic segment and the aerobic segment can be flexibly adjusted according to the water quality condition of waste water to be treated, and when different waste water is treated or the water quality of the waste water to be treated is changed, the anaerobic segment, the anoxic segment and the aerobic segment can perform efficient biochemical treatment, so that the reactor can obtain an overall stable and efficient treatment effect and has good environmental and economic benefits.

Description

technical field [0001] The invention relates to a wastewater biological treatment device, in particular to an anaerobic-anoxic-aerobic biochemical reactor with adjustable compartments, which belongs to the field of wastewater treatment. Background technique [0002] The traditional A / A / O process is a typical urban sewage treatment process, which solves the problems of organic matter removal and nitrogen and phosphorus removal in sewage to a certain extent. The ratio of the hydraulic retention time of the anaerobic section, the anoxic section and the aerobic section of the traditional A / A / O process, that is, the volume ratio of each reaction section, is generally 1:1:3~4, and the relative volume is fixed. Poor adjustability, for the treatment of industrial wastewater with special water quality, the hydraulic retention time and treatment load of each reaction section are difficult to adjust, and cannot fully adapt to some industrial wastewater with high concentration of refrac...

AI Technical Summary

Problems solved by technology

The ratio of the hydraulic retention time of the anaerobic section, the anoxic section and the aerobic section of the traditional A / A / O process, that is, the volume ratio of each reaction section, is generally 1:1:3~4, and the relative volume is fixed. Poor adjustability, for the treatment of industrial wastewater with special water quality, the hydraulic retention time and treatment load of each reaction section are difficult to adjust, and cannot fully adapt to some industrial wastewater with high concentration of refractory organic matter, high nitrogen and high phosphorus, which limits the application of this type of biochemical reactor Development and Application

[0003] Chinese patent CN201110157920.0 discloses "an adjustable biochemical pool and its adjustable A / A / O process for water treatment". Although the process is changeable, it fails to fundamentally change the anaerobic section and the anoxic section respectively. and the actual volume size of the aerobic section and the relative hydraulic retention time ratio

Chinese patent CN200510132777.4 "five-factor adjustable sewage treatment device", the volume ratio of anaerobic pool, anoxic pool and aerobic pool can be adjusted, but the anaerobic pool, anoxic pool and aerobic pool need to be arranged in sequence, and It is connected into a large rectangular pool and adjusted by moving partition walls, so it occupies a large area. The layout of the three biochemical reaction sections is single, difficult to adjust, and the application range is limited.

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