Efficient sewage treatment device and efficient sewage treatment method based on SBBR (Sequencing Batch Biofilm Reactor)

Abstract

The invention relates to efficient treatment of sewage, in particular to an efficient sewage treatment device and an efficient sewage treatment method based on SBBR (Sequencing Batch Biofilm Reactor). The efficient sewage treatment device comprises a sewage raw water tank, the SBBR and an electric control cabinet, wherein the sewage raw water tank comprises a water tank inlet pipe, a water tank sludge discharging pipe and a water tank water draining pipe; the water tank water draining pipe of the sewage raw water tank is connected with a water inlet pipe of the SBBR through a water feed pump and a check valve; the water tank water draining pipe of the sewage raw water tank is connected with a high-pressure water spraying head in the SBBR through a backwashing pump and the check valve; filler provides an attaching carrier for microorganisms to survive during the reaction period and serves as a filtration layer during the drainage period; suspended solids are intercepted by a filtering action and the settling time is replaced by the filtration time, so that the running time is greatly shortened; in addition, to-be-treated raw water in the sewage raw water tank is used as backwashing water, so that the operation efficiency is improved remarkably; a frequency conversion control blower is used for providing gas according to actual oxygen demand of the reactor, so that energy conservation and consumption reduction are realized and the treatment cost of the sewage is reduced.

Description

technical field [0001] The invention relates to an SBBR-based high-efficiency sewage treatment device and method, belonging to the technical field of sewage. Background technique [0002] In terms of sewage treatment process research, the Sequencing Batch Biofilm Reactor (SBBR for short) is a current research hotspot. It inherits the most mature controllable unsteady-state technical characteristics of the SBR process, and is one of the innovative processes of the SBR batch technology. The SBBR process introduces the intermittent operation mode into the biofilm reactor by adding fillers to the SBR as a carrier for microbial attachment and growth. On the one hand, it can increase the sludge concentration of the system, increase the contact area between microorganisms and sewage, and improve the efficiency of nitrifying bacteria and phosphorus accumulating bacteria. The amount of fixation and the ability to resist changes in the external environment can prevent the loss of bio...

AI Technical Summary

Problems solved by technology

However, the existing SBBR process is still in the stage of development and perfection, and there are still some shortcomings to be solved in the process

For example, due to the continuous metabolism of the biofilm on the fixed filler, the metabolites are likely to cause the plugging of the filler, resulting in a decline in the sewage treatment effect

In addition, the quantity and quality of sewage water fluctuate greatly, relying on experience to artificially set the operating time and oxygen supply parameters of each stage, often resulting in problems such as poor treatment efficiency of the reactor and waste of energy consumption

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