River sudden water pollution analysis and risk map compiling method

Abstract

The invention relates to river sudden water pollution analysis and risk map compiling method. The method is characterized by comprising the following steps: 1) setting a sudden water pollution scene;2) establishing a hydrodynamic water quality coupling model; 3) analyzing a simulation result, and 4) drawing a water pollution risk map. According to the method, risk source identification, numericalsimulation and accident early warning are integrated, water pollution indexes such as the time when a region is affected and the time when a pollution group reaches a specific section are accuratelysimulated, and technical support is provided for a water environment manager to make an emergency plan and post-process an accident.

Description

technical field [0001] The invention belongs to the field of emergency disaster prevention of water environment, and in particular relates to a method for analyzing sudden river water pollution and compiling a risk map. Background technique [0002] With the continuous development of social economy and the acceleration of urban planning and construction, the water environment problems in our country are deteriorating day by day, especially the frequent occurrence of sudden water pollution incidents, which have caused serious and bad impacts on the water environment and water supply system. Due to the uncertainty of sudden water pollution accidents, accident prediction and risk avoidance are difficult, and once an accident occurs, it will affect a wide range and cause great harm. Therefore, establishing a sound emergency response system for sudden water pollution situations and completing the drawing of water pollution risk maps have become key issues to be solved urgently fo...

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Problems solved by technology

[0003] Sudden water pollution problems have the characteristics of uncertainty in accidents, urgency in hazards, and long-term impacts. Existing research mainly uses methods such as risk source identification and evaluation, establishment of water quality models, and early warning of water pollution to simulate accidents. Some results have been achieved, but there are also certain limitations: ① Traditional numerical simulation studies focus on the change of concentration, and pay attention to other water pollution indicators such as the time when the area is affected and the time when the pollution cluster reaches a specific section The implementation efficiency of the emergency plan is low; ②The one-dimensional water quality model cannot reflect the horizontal concentration distribution of pollutants, and the simulation accuracy is insufficient; poor

[0005] Through the search of published patent documents, no published patent documents similar to this patent application have been found

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