Method for treating wastewater of carbonization by using microbe

A technology for microbial treatment and coking wastewater, applied in the direction of sustainable biological treatment, biological water/sewage treatment, chemical instruments and methods, etc., can solve the problem of poor treatment effect of coking wastewater

Active Publication Date: 2006-02-01
浙江汉蓝环境科技有限公司
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Problems solved by technology

[0005] The present invention aims to solve the technical problem that the treatment effect of coking wastewater is not good, and provides a method for treating coking wastewater by using microorganisms that can effectively remove various impurities in coking wastewater and make the effluent meet the national discharge standards

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  • Method for treating wastewater of carbonization by using microbe

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Embodiment Construction

[0126] The method for treating coking wastewater by using microorganisms disclosed in the present invention will be described in detail below with reference to the accompanying drawings.

[0127] Such as figure 1 As shown, it contains COD, NH 3 -N and volatile phenol, thiocyanate and other organic pollutants coking wastewater first pass through the air flotation tank to remove oil and suspended solids (and slag), and then send the coking wastewater to the pre-aeration system for pretreatment. The wastewater enters first Pre-aeration tank pre-added with HSBTMBM preparation of 1.5%-4.0% of the pre-aeration tank volume and activated carbon powder of 1.0%-2.5% of the pre-aeration tank volume. The temperature is controlled at 15-40°C, the pH value is 6.5-9.0, and the dissolved oxygen is 0.6 ~3.2mg / L, sludge sedimentation ratio SV 30 10%-25%, residence time 12-28 hours, influent COD index 1500-3500mg / L, effluent COD index 400-650mg / L, COD degradation efficiency 40%-75%, various effects ...

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Abstract

O-A-O biochemical technology is used by this ivention. In preaeration period, large quantity of COD effecting microbe activity and organic substances are removed. In second stage biochemical processing period, microbe indusium and carrier are added in to control ammonia-nitrogen is less than 15 mg / L, COD is less than 100 mg / L in coaking waste water, the other targets reach national first-level discharge standard.

Description

Technical field [0001] The invention belongs to the field of industrial sewage treatment, and particularly relates to a method for treating coking wastewater by using microorganisms. Background technique [0002] Coking wastewater is industrial wastewater produced during high-temperature drying of raw coal, gas purification, and chemical product refining. Especially in the process of cooling, washing, and purification of gas, a large amount of complex and high-concentration wastewater is produced. It is a kind of wastewater with a large amount of toxic Organic wastewater containing harmful substances, including wastewater produced by coking processes such as iron and steel coking wastewater and coal gas coking wastewater. The nuclear magnetic resonance chromatogram shows that there are dozens of inorganic and organic compounds in the coking wastewater. Among them, inorganic compounds are mainly nitrogen salts, thiocyanides, sulfides, cyanides, etc. In addition to phenols, organic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F9/02C02F3/12C02F3/30C02F3/34
CPCY02W10/10
Inventor 凌亮
Owner 浙江汉蓝环境科技有限公司
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