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Biological membrane and activated sludge composite sewage treatment system

A sewage treatment system and activated sludge technology, applied in the field of biofilm and activated sludge composite sewage treatment system, can solve problems such as unsolved push flow and packing blockage, and achieve enhanced shock load resistance, enhanced denitrification and phosphorus removal effect of effect

Inactive Publication Date: 2014-08-20
QINGDAO SPRING WATER TREATMENT
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the previous IFAS systems have not been successfully applied to the plug-flow oxidation ditch type biological pools because they did not solve the problems of plug-flow and plugging of fillers.

Method used

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  • Biological membrane and activated sludge composite sewage treatment system
  • Biological membrane and activated sludge composite sewage treatment system

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Embodiment Construction

[0023] The present invention proposes a biofilm and activated sludge composite sewage treatment system (IFAS). In order to make the advantages and technical solutions of the present invention clearer and clearer, the present invention will be further clearly and completely described below in conjunction with specific examples.

[0024] combine figure 1 , figure 2 Shown, the present invention, a kind of biofilm activated sludge composite sewage treatment system (IFAS), comprises reaction tank, water inlet 1, water outlet 9 and reflux liquid inlet point, in the reaction tank, is divided into anoxic / Anaerobic zone 2, anoxic zone 3, aerobic complex zone 4 and aerobic zone 8, every two adjacent zones such as anoxic / anaerobic zone 2 and anoxic zone 3 are provided with partition walls, partition walls Anoxic / anaerobic zone 2 and anoxic zone 3 are not completely blocked. One end of the partition wall is connected to the inner wall of the reaction tank, and a channel for sewage to f...

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Abstract

The invention discloses a biological membrane and activated sludge composite sewage treatment system, belonging to the technical field of sewage treatment. The biological membrane and activated sludge composite sewage treatment system comprises a reaction tank, wherein the reaction tank is sequentially divided into an anoxic / anaerobic region, an anoxic region, an aerobic composite region and an aerobic region from front to back; the aerobic composite region internally comprises a circulating flow partition wall, an arc-shaped guide wall, suspended filler for growing a biological membrane, an aeration plate and a blast blower, wherein the aeration plate is located below the suspended filler, the blast blower is connected with the aeration plate through an aeration pipeline, the circulating flow partition wall is transversely arranged in the aerobic composite region, the arc-shaped guide wall is located at an extension part of the circulating flow partition wall, a region I and a region II are internally and respectively provided with a propeller for stirring pollutants. Activated sludge and the biological membrane on the added suspended filler simultaneously coexist in a biological tank, so that the microbial biomasses of different populations in the biological tank are increased, and the tank capacity required by nitration reaction is greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a composite sewage treatment system (IFAS) of biofilm and activated sludge. Background technique [0002] A 2 O process is a biological nitrogen and phosphorus removal technology in sewage treatment, A 2 The O (Anaerobic-Anoxic-Oxic) process means that the feed water of the biological tank flows through the anaerobic, anoxic and aerobic biological tanks in sequence, and the remaining sludge from the secondary settling tank flows back to the inlet of the anaerobic tank, while the sludge from the tail of the aerobic tank flows back to the inlet of the anaerobic tank. The internal reflux nitrification liquid at the end returns to the water inlet end of the anoxic pool, inverting A 2 O process is to improve the removal capacity of total nitrogen, A 2 The anaerobic section and the anoxic section of the O process are reversed, and the anoxic section is set befor...

Claims

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Application Information

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IPC IPC(8): C02F3/30
Inventor 牛卉于振滨牛学义
Owner QINGDAO SPRING WATER TREATMENT
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