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Method for removing effluent chromaticity of excrement waste water by biochemical treatment

A fecal wastewater and biochemical treatment technology, applied in water/sewage treatment, toilet black water treatment, chemical instruments and methods, etc., can solve the problems of difficult decolorization and high chroma of effluent, and achieve the effect of easy decomposition and strong ozone oxidation

Inactive Publication Date: 2019-01-01
KUNMING METALLURGY INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The present invention aims at the problems of high chroma and difficult decolorization of feces wastewater through biochemical treatment at the present stage, and provides a method for decolorization of feces wastewater through biochemical treatment, so as to remove chroma and make feces wastewater completely reach << Urban Wastewater Recycling Urban Miscellaneous Water Quality (GB / T18920-2002) Water Quality Requirements for Flushing Toilets, Recycling

Method used

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  • Method for removing effluent chromaticity of excrement waste water by biochemical treatment

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Experimental program
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Effect test

Embodiment 1

[0040] (1) Water intake requirements for decolorization: Firstly, the biochemical treatment of fecal wastewater, except for chroma, meets the water quality requirements for toilet flushing in "Urban Sewage Recycling and Utilization of Urban Miscellaneous Water Quality" (GB / T18920-2002), and the chroma is 50 degrees to 150 degrees Spend.

[0041] (2) First-level decolorization treatment: 100L of wastewater that meets the requirements of step (1) enters the first-level decolorization, and 50L of coconut shell activated carbon is added as a catalyst. It is 180mg / L of ozone.

[0042] (3) Secondary decolorization treatment: the wastewater treated in step (2) enters the secondary decolorization, put in a UV lamp with a power of 60W and a wavelength of 280nm to 190nm to emit ultraviolet light as a catalyst, and use micropore aeration Introduce ozone with a flow rate of 5 L / min and a concentration of 100 mg / L into the wastewater for 10 minutes.

[0043] (4) The effluent from step (3...

Embodiment 2

[0045] (1) Water intake requirements for decolorization: Firstly, the biochemical treatment of fecal wastewater, except for chroma, meets the water quality requirements for toilet flushing in "Urban Sewage Recycling and Utilization of Urban Miscellaneous Water Quality" (GB / T18920-2002), and the chroma is 50 degrees to 150 degrees Spend.

[0046](2) First-level decolorization treatment: 100L of wastewater that meets the requirements of step (1) enters into the first-level decolorization, and 45L of coconut shell activated carbon is added as a catalyst. It is 150mg / L of ozone.

[0047] (3) Secondary decolorization treatment: The wastewater treated in step (2) enters the secondary decolorization, put in a UV lamp with a power of 40W and a wavelength of 280nm~190nm to emit ultraviolet light as a catalyst, and use micropore aeration Introduce ozone with a flow rate of 15 L / min and a concentration of 70 mg / L into the wastewater for 30 minutes.

[0048] (4) The effluent from step (...

Embodiment 3

[0050] (1) Water intake requirements for decolorization: Firstly, the biochemical treatment of fecal wastewater, except for chroma, meets the water quality requirements for toilet flushing in "Urban Sewage Recycling and Utilization of Urban Miscellaneous Water Quality" (GB / T18920-2002), and the chroma is 50 degrees to 150 degrees Spend.

[0051] (2) Primary decolorization treatment: Put 100L of waste water that meets the requirements of step (1) into primary decolorization, add 35L of coconut shell activated carbon as a catalyst, and pass microporous aeration into the waste water for 50 minutes with a flow rate of 40L / min and a concentration of It is 125mg / L of ozone.

[0052] (3) Secondary decolorization treatment: The wastewater treated in step (2) enters the secondary decolorization, put in a UV lamp with a power of 30W and a wavelength of 280nm~190nm to emit ultraviolet light as a catalyst, and use micropore aeration Introduce ozone with a flow rate of 25 L / min and a conc...

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Abstract

The invention relates to a method for removing effluent chromaticity of excrement waste water by biochemical treatment by virtue of catalytic oxidation of active carbon, ultraviolet rays and ozone. The waste water with other indexes meeting the toilet flushing water quality requirements of Urban Sewage Reutilization Urban Miscellaneous Water Quality after the chromaticity being removed by virtue of the biochemical treatment, and the method comprises the steps of primary discoloration treatment and secondary discoloration treatment. The method provided by the invention is simple in operation, high in efficiency, low in cost, free from secondary pollution, and good in economic benefit, environment benefit and social benefit.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a method for removing the chroma of excrement waste water through biochemical treatment by using active carbon, ultraviolet light and ozone catalytic oxidation. Background technique [0002] With the continuous acceleration of the urbanization process in our country and the continuous growth of the population, the amount of excrement discharge has also increased. However, the construction of municipal and sanitation infrastructure seriously lags behind the speed of urban development. If it is not handled properly, it will cause environmental pollution. In recent years, the recycling toilet flushing technology after fecal wastewater treatment has been rapidly promoted and applied, and environmentally friendly toilets have appeared in various places. [0003] The treatment of fecal wastewater mainly adopts biochemical treatment technology. After treatme...

Claims

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Application Information

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IPC IPC(8): C02F9/08
CPCC02F1/283C02F1/32C02F1/725C02F1/78C02F2103/005C02F2305/02
Inventor 欧根能刘维维陈华君张水南沈立俊胥福顺陈加希田林刘俊场杨勇
Owner KUNMING METALLURGY INST
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