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Coupling type sewage purification and regeneration treating method capable of removing phosphorus efficiently

A sewage purification and treatment method technology, applied in the direction of water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the problems of large sludge discharge and difficulty in disposal of excess sludge , to achieve the effect of avoiding the traditional process route

Active Publication Date: 2014-09-10
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] In order to overcome the following problems in the current main technologies for sludge removal and phosphorus removal: 1. The amount of sludge discharge is large, and the disposal of remaining sludge is difficult

Method used

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  • Coupling type sewage purification and regeneration treating method capable of removing phosphorus efficiently

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Embodiment 1

[0034] A coupled sewage purification and regeneration treatment method for efficient phosphorus removal, comprising the following steps:

[0035] a) Preliminary precipitation

[0036] The sewage collected by the sewage pipeline is filtered through the coarse grid to remove solid impurities and then enters the sand settling sump.

[0037] The water pump pumps up the sewage from the sand settling tank, filters a small amount of mud and sand through a fine grid, and then enters the adjustment tank. Through the circulating water pump and the connected jet device, the perforated aeration pipe installed at the bottom of the tank is used to aerate and stir the water body to maintain The water quality is relatively stable;

[0038] b) Convert phosphorus in sewage into phosphine and remove phosphorus

[0039] By concentrating and distributing the amount of aeration under the membrane area of ​​the Membrane Bio-Reactor (MBR), an aerobic area with a dissolved oxygen concentration great...

Embodiment 2

[0057] A coupled sewage purification and regeneration treatment method for efficient phosphorus removal, the process includes the following steps:

[0058] a) Preliminary precipitation

[0059] The sewage collected by the sewage pipeline is filtered through the coarse grid to remove solid impurities and then enters the sand settling sump.

[0060] The water pump pumps up the sewage from the sand settling tank, filters a small amount of mud and sand through a fine grid, and then enters the adjustment tank. Through the circulating water pump and the connected jet device, the perforated aeration pipe installed at the bottom of the tank is used to aerate and stir the water body to maintain The water quality is relatively stable;

[0061] b) Convert phosphorus in sewage into phosphine and remove phosphorus

[0062] By concentrating and distributing the amount of aeration under the membrane area of ​​the Membrane Bio-Reactor (MBR), an aerobic area with a dissolved oxygen concentra...

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Abstract

The invention discloses a coupling type sewage purification and regeneration treating method capable of removing phosphorus efficiently. The method takes municipal sewage as a treatment object and includes: a, preliminary precipitation; b, phosphorous removal through conversion of the phosphorous in the sewage into phosphine; c, conversion of the phosphine; and d, recycling of purified water. According to the method, the municipal sewage is recycled, sludge after the sewage treatment is recycled completely, organic pollutants are removed, denitrification is achieved, and the technical gap of efficient conversion and usage of the phosphine at present is filled.

Description

technical field [0001] The invention relates to the field of sewage treatment and recovery, in particular to a coupled sewage purification and regeneration treatment method for efficient phosphorus removal. Background technique [0002] Phosphorus is a limited resource that cannot be naturally regenerated on the earth. There is a contradiction between the increasing shortage of terrestrial phosphorus mineral resources and the excessive phosphorus content in the water environment, which leads to eutrophication of water bodies. Eutrophication of water body is one of the main environmental problems at present, which seriously restricts the sustainable development of society and economy. Phosphorus, as a nutrient factor, is one of the important factors that induce eutrophication in water bodies. The phosphorus in water mainly comes from domestic sewage, detergents and industrial wastewater. How to effectively remove phosphorus in wastewater has always been a hot topic for envir...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14
Inventor 牛晓君
Owner SOUTH CHINA UNIV OF TECH
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