Anaerobic hydrolysis-acidification and anoxic-aerobic process-sequencing batch reactor (AO-SBR) integrated sewage treatment reaction tank

Abstract

The invention discloses an anaerobic hydrolysis-acidification and anoxic-aerobic process-sequencing batch reactor (AO-SBR) integrated sewage treatment reaction tank which comprises an anaerobic hydrolysis-acidification tank, an anoxic / aerobic tank and an SBR tank, wherein the anaerobic hydrolysis-acidification tank is provided with a water inlet pipe, a water outlet pipe, a water distribution device, a sludge refluxing device and a sludge outlet pipe; the water inlet pipe is connected with the water distribution device; the anoxic / aerobic tank comprises an anoxic zone and an aerobic zone; theanoxic zone is provided with a water inlet hole and a first stirrer; the water inlet hole is connected with the water outlet pipe of the anaerobic hydrolysis-acidification tank; the aerobic zone is provided with an air distribution device, a rectifying wall and a water outlet seam; the aerobic zone is connected with the SBR tank through the water outlet seam; the rectifying wall is arranged at the upstream part of the water flowing through the water outlet seam; the SBR tank comprises a water inlet seam, a second stirrer, an aeration device, a drainage device and a skimming pipe; and the water inlet seam is connected with the water outlet seam. The reaction tank disclosed by the invention is simple and flexible, has small floor space and low cost, is convenient to operate and manage.

Description

technical field [0001] The invention relates to a sewage treatment reaction pool, in particular to an anaerobic hydrolysis acidification and AO-SBR integrated sewage treatment reaction pool. Background technique [0002] Anaerobic biological treatment of wastewater refers to the process of decomposing and converting various complex organic substances in wastewater into methane and carbon dioxide through the action of anaerobic microorganisms (including facultative microorganisms) under the condition of no molecular oxygen. [0003] The anaerobic hydrolytic acidification tank can take advantage of the difference in growth rate between methanogenic bacteria and hydrolytic acid-producing bacteria, and the elutriation effect of flowing water in the reaction tank makes it difficult for methane bacteria to reproduce in the reaction tank, and the anaerobic treatment is controlled within the reaction time The short first stage is to hydrolyze insoluble organic matter into soluble or...

AI Technical Summary

Problems solved by technology

However, in the existing technology, the integrated reaction tank has not been realized, and if the anaerobic hydrolysis acidification tank is only connected with the anoxic / aerobic-SBR reaction tank, it will inevitably cause complex structure and occupy an area Wider, too expensive, etc.

Images