Biochemical sewage treatment device

Abstract

The invention provides a biochemical sewage treatment device. The device comprises a phosphorus removal agent liquid storage tank, a liquid suction pump, a liquid suction conduit, a Fenton PH value regulating tank, a Fenton pH value adjusting tank, a valve-containing calandria I, an oxidation reaction tank, a valve-containing calandria II, a neutralization reaction tank, a valve-containing calandria III, a water distribution well, a valve-containing calandria IV, a radial flow sedimentation tank, a valve-containing calandria V, an aeration row, an aeration air pipe, a mechanical valve, a pH value fan aeration adjusting pipe structure, an automatic control hydrogen peroxide delivery pipe structure, a sewage post-stage separation treatment tank structure and a shutdown-free observable maintenance sheet structure. According to the invention, the arrangement of an aeration nozzle, an exhaust row, an air guide pipe, an air box and an aeration fan is beneficial to aeration work, pipeline blockage can be avoided, and the treatment effect can be ensured; and air is continuously aerated into the air box through the action of the aeration fan, so that the air is continuously discharged through the air guide pipe through the exhaust row until being sprayed out through the aeration nozzle, aeration operation can be performed, and the sewage stirring and mixing efficiency can be ensured, and further the pipeline blockage can be avoided.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to replacing traditionally used solid ferrous sulfate (FeSO4) and solid polyaluminum ferric chloride ([AL2(OH)n·CL6-n] with a liquid dephosphorization agent in the Fenton process. m·[Fe2(OH)x·CL6-x]y) two agents can not only achieve the catalytic effect of ferrous iron, but also achieve the purpose of reducing COD, denitrification and phosphorus removal to purify water quality. Background technique [0002] Fenton treatment, the main drugs in the original process are solid drugs such as ferrous sulfate and polyaluminum ferric chloride. Dilute and dosing according to the required concentration. The disadvantages of this drug are: ① The quality of the drug is not good, and it is difficult to stabilize the effluent to meet the standard. ② The chemical is highly corrosive, causing the pipeline to be frequently damaged due to corrosion. ③ There are many impurities...

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Problems solved by technology

[0006] In order to solve the above technical problems, the present invention provides a biochemical sewage treatment device to solve the existing treatment devices that are prone to blockage of pipelines during treatment, manual dosing causes high operating intensity, frequent maintenance times affect treatment efficiency and high sewage treatment costs The problem

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