Mike11 based river water environmental capacity determining method

Abstract

The invention discloses a Mike11 based river water environmental capacity determining method. The conventional river water environmental capacity calculation methods are low in precision and cannot beused for calculating the dynamic water environmental capacity, and then a dynamic water environmental capacity concept method is introduced, and the problem that the capacity calculation result is not accurate due to the fact that a hydrologic condition is a changeable process can be avoided. The method includes: establishing a water volume and water quality model by using original data and HD and AD modules of MIKE11 software, performing analog computation on space-time distribution of pollutants in a watercourse, and acquiring the chemical oxygen demand COD, the total phosphorus TP, and theammonia nitrogen concentration of control cross sections of each functional area of the watercourse; and using a one-dimensional water environmental capacity model to calculate the natural water environmental capacity of the chemical oxygen demand COD, the total phosphorus TP, and the ammonia nitrogen of the design flow of each functional area in a case that the assurance rate is 70%, 80%, and 90%. The Mike11 based river water environmental capacity determining method can improve the precision of water environmental capacity calculation, and facilitates river ecological environment management.

Description

Technical field [0001] The present invention relates to environmental management neighborhoods such as pollution reduction and total pollutant discharge control, and in particular to a method for calculating the water environmental capacity of rivers supported by MIKE11 technology, wherein the rivers refer to connected rivers. Background technique [0002] Water environment capacity is the basic basis for the management of water quality objectives in water function zones, the main constraint of water resources protection planning, the basis for the implementation of total water pollutant control, and the basis for water environment management. In the 1970s, the concept of "environmental capacity" entered our country. By 1988, Zhang Yongliang and others put forward a concise definition of "water environment capacity": the amount of pollutants that a water environment can hold under a specified environmental target. Since then, although there have been many new definitions of water...

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Problems solved by technology

[0006] In view of the deficiencies in the existing river water environment capacity calculation method, the technical problem to be solved in the present invention is to establish a new calculation method for determining the river water environment capacity under the support of a kind of MIKE11 technology, which can not only overcome the In the calculation of water environment capacity, the problem of being unable to start due to the lack of hydrological and other data can also avoid the problem of inaccurate calculation results of capacity due to the fact that hydrological conditions are a changing process, and improve the accuracy of water environment capacity calculation. Management of River Ecological Environment

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