An urban sewage treatment plant effluent quality evaluation method

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 does not consider the impact of different pollutant detection methods, so as to facilitate the supervision of competent authorities , strong operational effect

Active Publication Date: 2019-06-14
宜昌竟诚检测技术有限公司
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  • Abstract
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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 an urban sewage treatment plant effluent quality evaluation method. The effluent discharge water quality standard of the municipal sewage treatment plant is quantified into a unified value, wherein the indexes are defined as water quality indexes SZI; the method comprises the following steps of: respectively adopting a Limo method for different types of control projects according to statistical data and actual investigation conditions; a worst factor discrimination method is used for calculating the water quality index SZI of various pollutants, a comprehensive index method is used for carrying out weighted assignment on different types of control items, finally, the control items are simplified into unique scores, the discharge water quality of a sewage plant can becomprehensively reflected, and the method has the characteristics of comprehensiveness, simplicity and convenience, is convenient for supervision of competent departments and has high operability. The method not only has guiding significance for national pollutant emission reduction, but also can be used for carrying out unified assessment on the technical levels of all national sewage treatmentplants.

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 Applications(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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