Coupling type sewage de-phosphorization purification regeneration treatment technique

A treatment process and coupled technology, applied in the fields of adsorption water/sewage treatment, light water/sewage treatment, water/sewage multi-stage treatment, etc., can solve the problems of large sludge discharge and difficulty in disposal of excess sludge.

Active Publication Date: 2012-11-14
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0016] In order to overcome the following problems in the current main technologies of sludge removal and phosphorus removal: large amount of sludge discharge and difficulty in disposal of remaining sludge

Method used

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  • Coupling type sewage de-phosphorization purification regeneration treatment technique
  • Coupling type sewage de-phosphorization purification regeneration treatment technique
  • Coupling type sewage de-phosphorization purification regeneration treatment technique

Examples

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Embodiment 1

[0040] In this embodiment, the sewage discharged from a certain chemical factory in Guangzhou, which is inferior to Class V, is subjected to advanced treatment to reach the level of surface water Class III (TN < 15 mg / L), and the daily treatment capacity is 10 tons.

[0041] The micro-polluted water treatment steps of this embodiment are as follows:

[0042] A coupled sewage dephosphorization purification regeneration treatment process, comprising the following steps:

[0043] a) Precipitation

[0044] The sewage collected by the sewage pipeline is filtered through the coarse grid to remove solid impurities and then enters the sand settling sump.

[0045] The water pump pumps up the sewage from the sand settling tank, passes through the fine grid to filter the mud and sand, 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 agitate the wate...

Embodiment 2

[0094] In this embodiment, the sewage discharged from a textile factory in Guangzhou, which is inferior to Class V, is subjected to advanced treatment to reach the level of surface water Class III (TN < 15 mg / L), and the daily treatment capacity is 10 tons.

[0095] A coupled sewage dephosphorization purification regeneration treatment process is characterized in that the method comprises the following steps:

[0096] a) Precipitation

[0097] The sewage collected by the sewage pipeline is filtered through the coarse grid to remove solid impurities and then enters the sand settling sump.

[0098] 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. ...

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Abstract

The invention discloses a coupling type sewage de-phosphorization purification regeneration treatment technique. Urban sewage is used as a treated object, the regeneration treatment method comprises the following steps of: a), preliminary precipitation, b), conversion of phosphor in the sewage to hydrogen phosphide in order to remove phosphor; c), conversion of hydrogen phosphide; and d), recovering of purified water; and in this way, the urban sewage is recovered and reused, all the mud after the sewage treatment is recovered, organic pollutants and nitrogen are removed. With the adoption of the technique, the defects of large mud treatment difficulty and large occupied area in the mud exhaust de-phosphorization of the existing normal biochemical treatment process and membrane bioreactor process are overcome; and meanwhile, new coagulant, adsorbent and flocculent are used in order to recover and regenerate water better, the sterilization is performed by nitrogen-ultrasonic-ultraviolet combination, hydrogen phosphide is converted into phosphatic fertilizer, in this way, the blank of effective conversion and utilization of hydrogen phosphide at home and abroad is filled.

Description

technical field [0001] The invention relates to the field of sewage treatment and recovery, in particular to a coupled sewage dephosphorization purification regeneration treatment process. 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 environmental engineeri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F1/52C05G3/04C09K17/40C02F1/28C02F3/30C02F1/32C02F1/36C05G3/80
Inventor 牛晓君
Owner SOUTH CHINA UNIV OF TECH
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