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Method for treating coal water slurry gasification wastewater with microbes

A technology of microbial treatment and coal water slurry, applied in biological water/sewage treatment, chemical instruments and methods, water/sludge/sewage treatment, etc., can solve problems such as difficulty in meeting discharge standards

Active Publication Date: 2012-10-31
浙江汉蓝环境科技有限公司
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Problems solved by technology

[0007] The purpose of the present invention is to provide a method of using microorganisms to treat coal-water slurry gasification wastewater, so as to solve the technical problem in the prior art that it is difficult to reach the specified discharge standard after wastewater treatment

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  • Method for treating coal water slurry gasification wastewater with microbes
  • Method for treating coal water slurry gasification wastewater with microbes

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Embodiment Construction

[0109]The following examples are running tests done by the present invention in a certain wastewater treatment project. The test is a closed test, and non-specific groups of people cannot touch and understand the test process.

[0110] like figure 2 As shown, four main units are spatially constituted by regulating pond, multifunctional pond, compound denitrification pond and sedimentation pond. After distilling ammonia from coal-water slurry gasification wastewater in a factory, it is injected into the multi-functional pool for denitrification and denitrification through the regulating pool. 2.5% activated carbon powder. Control temperature at 20~35℃, pH value 7.0~9, dissolved oxygen below 0.2mg / L, sludge sedimentation ratio SV 30 15%~30%, the residence time is 16~24 hours, the influent COD index is 200~760mg / L, and the effluent COD index is 150~300mg / L.

[0111] The wastewater treated by the multifunctional pool is then sent to the compound denitrification pool, which is ...

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Abstract

The invention discloses a method for treating coal water slurry gasification wastewater with microbes. Wastewater sequentially enters a conditioning tank, a multifunctional tank, a composite denitrification tank and a sedimentation tank, and finally, is discharged after reaching the standard. A stirrer and an aerator are added to the multifunctional tank, and an aerator is arranged in the composite denitrification tank. A microbe carrier, which accounts for 1.0-2.5% by volume, and an environmental microbe preparation, which accounts for 1.5-4.0% by volume, are respectively added into the multifunctional tank and the composite denitrification tank. After being treated by the method disclosed by the invention, the ammonia nitrogen content in the coal water slurry gasification wastewater canbe controlled at below 15 mg / L, the COD (chemical oxygen demand) can be controlled at below 100 mg / L, and other indexes can also achieve Grade 1 in National Sewage Comprehensive Discharge Standard (GB8978-1996).

Description

technical field [0001] The invention belongs to the technical field of biochemistry and environmental protection, and in particular relates to a method for treating coal-water slurry gasification wastewater by using microorganisms. Background technique [0002] In recent years, with the acceleration of industrialization and urbanization in my country, the consumption of refined oil in my country has continued to grow rapidly, and the dependence on foreign crude oil has continued to increase, and the pressure to ensure a stable domestic oil supply is increasing. As for the current situation of energy distribution in my country, it is: "lack of oil and gas, relatively rich in coal resources". Recently, the National Energy Administration will release the "12th Five-Year Plan for Coal Industry Development". Based on the characteristics of "high pollution and heavy dependence on water sources" of coal chemical industry, the "clean and efficient" utilization of coal energy is part...

Claims

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Application Information

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IPC IPC(8): C02F3/30C02F3/34
Inventor 凌亮
Owner 浙江汉蓝环境科技有限公司
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