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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, chemical instruments and methods, water/sewage multi-stage treatment, etc., can solve the problem of poor treatment effect of coking wastewater

Active Publication Date: 2005-01-12
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 in conjunction with the accompanying drawings.

[0127] like figure 1 Shown, containing 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-exposure system for pretreatment, the wastewater first enters The pre-aeration tank is pre-added with HSBTMBM preparation of 1.5% to 4.0% of the volume of the pre-aeration tank and activated carbon powder of 1.0% to 2.5% of the volume of the pre-aeration tank. 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 3010%-25%, residence time 12-28 hours, influent COD index 1500-3500mg / L, effluent COD index 400-650mg / L, COD degradation efficienc...

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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, in particular 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 refining of chemical products, especially during the cooling, washing, and purification of coal gas, a large amount of wastewater with complex components and high concentrations is produced. Organic wastewater of harmful substances, including wastewater from coking processes such as steel coking wastewater and gas coking wastewater. The NMR chromatogram shows that coking wastewater contains dozens of inorganic and organic compounds. Among them, inorganic compounds are mainly a large amount of nitrogen salts, thiocyanides, sulfides, cyanides, etc. In addition to phenols, organic compounds also include monocyclic and polycyclic aromatic compounds, heterocyclic c...

Claims

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Application Information

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IPC IPC(8): C02F9/02C02F9/14
CPCY02W10/10
Inventor 凌亮
Owner 浙江汉蓝环境科技有限公司
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