Method and device for obtaining regional water quality standard limit value

Abstract

The invention discloses a method and device for obtaining a regional water quality standard limiting value. The method comprises following steps: determining an object water environment region and an object pollutant; detecting the regional exposure concentration of the object pollutant; when the regional exposure concentration is more than a water environment reference, obtaining the total actual discharge quantity of the object pollutant; calculating a reference standard discharge quantity according to the water environment reference and the total water quantity in the object water environment region; calculating the difference value of the total actual discharge quantity and the reference standard discharge quantity, thus obtaining a standard discharge reduction quantity; carrying out cost-benefit analysis, thus obtaining an enterprise bearable discharge reduction quantity; if the standard discharge reduction quantity is less than the enterprise bearable discharge reduction quantity, taking the water environment reference as the regional water quality standard limiting value, or obtaining the regional water quality standard limiting value according to the difference value of the standard discharge reduction quantity of the object pollutant and the enterprise bearable discharge reduction quantity, and the total water quantity. In application of the invention, both the water environment pollution treatment and economic development can be taken into account; and the water environment pollution treatment can be promoted.

Description

technical field [0001] The invention relates to water environment ecological technology, in particular to a method and device for obtaining regional water quality standard limits based on water environment benchmarks and cost analysis. Background technique [0002] Water is a resource that every species on earth depends on for survival. With the increasing population, the per capita water resources are decreasing. At the same time, with the rapid development of modern industrial and agricultural economy, the water environment is facing serious threats of various pollution, such as domestic sewage, factory chemical pollution, sewage discharge Waste and excessive pesticides and fertilizers applied on farmland. That is to say, while the per capita water resources are decreasing, the water quality and functional water shortages caused by the deterioration of the water environment are also becoming more and more prominent, which has become a prominent and global common technical...

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Problems solved by technology

Therefore, obtaining my country's regional water quality standard limits based on the water environment benchmarks and WER values ​​published abroad, the accuracy of the obtained regional water quality standard limits is not high, and cannot provide effective technical support for regional water environment management, and effectively serve different water areas in my country. It is difficult to meet the long-term goal of my country's water environment management and achieve the healthy development of the water environment ecosystem; in addition, due to the serious water pollution in my country, if the water quality is assessed according to the stricter regional water quality standard limits abroad Control requires enterprises to spend huge treatment costs, which brings difficulties to the normal production and operation of enterprises and affects economic development; moreover, due to the high cost of water pollution treatment, many enterprises are unwilling or evade the implementation of regional water quality standard limits As a result, the implementation of water environmental pollution control is weak, and the effect of water environmental pollution control is not ideal

[0009] Therefore, the limits of regional water quality standards formulated or obtained at present do not take into account the protection of the characteristics of my country's regional water environment and biota, and there is no specific technical method for formulating regional water quality standards, nor does it consider the protection of the environment while protecting the environment. It is also necessary to consider economic development and enterprise development, so that economic development, enterprise development and water environment pollution control cannot be taken into account at the same time, and the cost of water environment pollution control is high, resulting in poor water environment pollution control effect

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