A method for evaluating the effluent quality of urban sewage treatment plants

A technology for sewage treatment plants and urban sewage, applied in data processing applications, general water supply conservation, instruments, etc., can solve problems such as inaccurate evaluation results and failure to consider the impact of different pollutant detection methods, and achieve convenient supervision and strong operational effect

Active Publication Date: 2022-03-01
宜昌竟诚检测技术有限公司
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Problems solved by technology

[0005] Aiming at the deficiencies in the prior art, the present invention provides a method for evaluating the effluent quality of urban sewage treatment plants, which is used to solve the problem of calculating the overall pollution degree in the prior art by assigning weights to the proportions of different pollution factors. Differences in the detection methods of different pollutants and the degree of impact of different pollutants on water quality lead to inaccurate evaluation results

Method used

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Embodiment

[0034] The present invention proposes a method for evaluating the water quality of urban sewage treatment plant effluent, the specific process of which is as follows:

[0035] S101: collect effluent samples at the water outlet of the urban sewage treatment plant, and detect the concentration of various pollutant factors contained in it. In this embodiment, the types of pollutant factors to be detected and the sampling standards are as follows:

[0036] 1. Chemical oxygen demand

[0037] Under certain conditions, after potassium dichromate oxidation treatment, the mass concentration of oxygen corresponding to the potassium dichromate salt consumed by dissolved substances and suspended solids in the water sample is expressed in mg / L.

[0038] 2. Biochemical oxygen demand

[0039] It refers to the amount of dissolved oxygen consumed in the process of biochemical reactions carried out by microorganisms to decompose biodegradable organic matter present in water under certain condi...

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Abstract

The invention provides a method for evaluating the effluent water quality of urban sewage treatment plants, which quantifies the effluent water quality standards of urban sewage treatment plants into a unified value, which is defined as the water quality index SZI. The Nemero method and the worst factor discrimination method are used to calculate the water quality index SZI of various pollutants. Finally, the comprehensive index method is used to assign weights to different types of control items, and finally simplified to a unique score, which can fully reflect the discharge water quality of the sewage plant and is comprehensive. And the characteristics of simplicity, it is convenient for the supervision of the competent department, and it has strong operability. It not only has guiding significance for the reduction of national pollutant discharge, but also can conduct a unified evaluation of the technical level of all sewage treatment plants in the country.

Description

technical field [0001] The invention relates to the technical field of water pollution control, in particular to a method for evaluating the quality of effluent from urban sewage treatment plants. Background technique [0002] At present, the core of my country's environmental management is to improve environmental quality, and reducing pollutant discharge is the fundamental means to improve environmental quality. Stationary pollution sources are the main source of pollutant discharge in my country. At present, urban sewage treatment plants bear the pressure of reducing emissions from most water pollution sources in my country. At present, the discharge of sewage plants uniformly implements the "Pollutant Discharge Standards for Urban Sewage Treatment Plants" GB18918-2002, which lists specific limits for a series of pollutant control items. As sewage treatment plants around the world have successively carried out standard upgrading and upgrading, almost all sewage treatment...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06Q10/06G06Q50/06
CPCY02A20/152
Inventor 廖玉海
Owner 宜昌竟诚检测技术有限公司
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