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Method for treating sewage by industrial solid wastes

A sewage treatment method and sewage technology, applied in water/sewage treatment, chemical instruments and methods, water/sludge/sewage treatment, etc., can solve the problems of wide application fields, high price, and large market demand for iron filings, etc. Achieve the effects of promoting electrode reaction, increasing potential difference, and strong practicability

Active Publication Date: 2010-05-12
杨祺
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The existing micro-electrolysis sewage treatment method is to use iron filings and coke or iron filings and activated carbon to form a sewage treatment layer; the efficiency of coke treatment layer for sewage treatment is low, the cost of activated carbon treatment layer for sewage treatment is high, and the market demand for iron filings is large. Wide range of applications, high price, high cost of sewage treatment in the iron filings treatment layer

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0017] The high-concentration printing and dyeing sewage of Shandong Lanyan Co., Ltd., COD3500mg / l, chroma 10200 times, and pH greater than 12, take 2.5m3 of printing and dyeing sewage and use 20% H2SO4 to adjust the pH to less than 3, enter the pretreatment tank from the bottom of the pretreatment tank, and pass through Blast furnace heavy slag is put into a sewage treatment layer composed of coke, blast furnace iron-containing slag and activated carbon, and left to stand for more than 2 hours. The COD degradation rate is 45.7%, the color degradation rate is 52.7%, and the pH is greater than 5.

Embodiment 2

[0019] Shandong Xinhua Pharmaceutical Co., Ltd. produced nitrosation mother liquor sewage produced by caffeine, COD37500mg / l, NH3-N1890mg / l, pH less than 5, took 25m3 of sewage and adjusted the pH to less than 3 with 20% H2SO4, and entered the pretreatment from the bottom of the pretreatment tank pool, through the blast furnace heavy slag into the three-layer sewage treatment layer composed of coke, blast furnace iron-containing slag, and activated carbon, and let it stand for more than 3 hours. The COD degradation rate is 52.8%, the NH3-N degradation rate is 40.5%, and the pH is greater than 5.

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PUM

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Abstract

The invention relates to a method for treating sewage, which comprises the comprehensive utilization of blast furnace heavy slag and blast furnace iron-containing slag. The method is characterized in that the blast furnace heavy slag is used as a bedding layer; coke, the blast furnace iron-containing slag and activated carbon are overlapped from bottom to top to form a sewage iron-carbon treatment layer; and the iron-carbon treatment layer utilizes a micro-electrolysis theory to treat the sewage. The method solves the problem that the efficiency of treating the sewage only by a coke treatment layer is low, reduces production cost for treating the sewage only by an activated carbon treatment layer, makes the blast furnace heavy slag and the blast furnace iron-containing slag comprehensively utilized simultaneously, is environmentally-friendly and economical, and has wider application and development prospect.

Description

technical field [0001] The invention relates to a sewage treatment method, comprising the comprehensive utilization of industrial solid waste blast furnace heavy slag and blast furnace iron-containing slag. technical background [0002] The existing micro-electrolysis sewage treatment method is to use iron filings and coke or iron filings and activated carbon to form a sewage treatment layer; the efficiency of coke treatment layer for sewage treatment is low, the cost of activated carbon treatment layer for sewage treatment is high, and the market demand for iron filings is large. The application field is wide, the price is high, and the cost of treating sewage in the iron filings treatment layer is high. Contents of the invention [0003] The present invention is to provide a method for treating sewage by using industrial solid waste, which can not only perform micro-electrolysis pretreatment on acidic or acid-separated sewage, but also has low production cost and high se...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/461
Inventor 杨祺
Owner 杨祺
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