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A method and device for treating organic sewage

A technology of organic sewage and treatment method, which is applied in the field of sewage treatment equipment and the treatment of refractory organic sewage, can solve the problems of large workload of replacing fillers, large amount of sludge, and reduced effect, so as to reduce treatment costs and reduce operating costs. , the effect of convenient operation

Inactive Publication Date: 2011-12-14
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Iron-carbon bed purification compaction, iron sludge clogging, and large amount of sludge are all headaches. Backwashing can slow down iron sludge clogging, but it can’t solve the problem of decline in effect. It is often necessary to replace packing, and the workload of replacing packing in actual projects is very large. Big

Method used

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  • A method and device for treating organic sewage
  • A method and device for treating organic sewage

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Effect test

Embodiment 1

[0029] The sewage is landfill leachate sewage, the mass ratio of iron to carbon is 0.5, the rate of ozone introduction is 6g / h, the mass concentration is 1% and the amount of hydrogen peroxide is 10ml / h, and the size of the reactor is Ф100mm×1500mm. The volume of the device is 15L. After 30 days of continuous operation, the decolorization rate of landfill leachate sewage reaches 96%, and the COD removal rate reaches 75%.

Embodiment 2

[0031] Described sewage is printing and dyeing organic sewage, and COD is 4000mg / L, and iron-carbon mass ratio is 0.1, and the rate that ozone feeds is 8g / h, and mass concentration is that the add-on of 2% sodium hypochlorite solution is 20ml / h, and reactor size It is Ф100mm×1500mm, and the reactor volume is 15L. After 30 days of continuous operation, the decolorization rate of the device for printing and dyeing organic sewage reaches 98%, and the COD of the discharged treatment solution is 80mg / L.

Embodiment 3

[0033] Described sewage is papermaking black liquor sewage, COD is 15000mg / L, chromaticity 20000 times, iron-carbon mass ratio is 0.3, the rate of ozone feed is 9g / h, and the mass concentration is that the addition amount of 3% hydrogen peroxide solution is 10ml / h, the size of the reactor is Ф100mm×1500mm, and the reactor volume is 15L. After 40 days of continuous operation, the decolorization rate of the device to papermaking black liquor reaches 98%, and the COD removal rate is 80%.

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Abstract

The invention provides a method for treating organic sewage. The organic sewage enters the reactor from the lower part of the reactor, and the reactor is filled with iron and carbon; Reduction degradation; a microporous aeration system is installed at the bottom of the reactor, and ozone is passed into the reactor from the bottom of the reactor through the microporous aeration system, and a liquid oxidant is added into the reactor through the lower part of the reactor. , ozone and liquid oxidant to complete the treatment of organic sewage. The present invention also provides a sewage treatment device using the above treatment method. The method and the treatment device of the invention have good treatment effect on organic sewage, wide application range of pH, overcome the defect that iron and carbon are easy to agglomerate, and reduce operating cost.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a treatment method for refractory organic sewage, and also relates to a sewage treatment device. Background technique [0002] With the development of industrial technology, the concentration of organic pollutants in industrial sewage is getting higher and higher, the composition is becoming more and more complex, and the types are increasing. It is extremely harmful to humans and the environment, and the traditional treatment methods are very efficient. Low, time-consuming, high cost, accompanied by the generation of toxic pollutants and other disadvantages. Iron-carbon micro-electrolysis reactors are often used in the treatment of organic pollutant sewage, and can achieve ideal results at the beginning. But after two months of operation, the effect dropped sharply. Iron-carbon bed purification compaction, iron sludge clogging, and large amount of sludge are all headaches. Back...

Claims

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Application Information

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IPC IPC(8): C02F1/78
Inventor 阮新潮夏东升曾庆福杨俊孙磊
Owner WUHAN TEXTILE UNIV
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