Water pollution rapid tracing method for automatically screening upstream risk source

Abstract

The invention provides a water pollution rapid tracing method capable of automatically screening an upstream risk source. The method comprises the steps that: a hydrological space scene library is constructed based on DEM data, and a risk source pollution discharge feature library is constructed by analyzing pollution discharge features of pollution discharge risk sources; and on the basis of the hydrological element spatial relationship, an upstream risk source of the monitoring point is automatically screened out through a spatial query technology, a monitoring result of the monitoring point is compared with pollution discharge features of the suspected risk source, and the comprehensive pollution discharge contribution rate of each suspected risk source is calculated. The higher the comprehensive pollution discharge contribution rate of the suspected risk source is, the greater the influence of the risk source on the water quality pollution of the monitoring point position is. The method can assist in rapidly checking suspicious pollution discharge risk sources, and provides a basis for water environment supervision. The method has important significance in tracing the water environment pollution source and supervising the water environment pollution source so as to ensure the safety of the water environment. The problems that a traditional water pollution tracing method is time-consuming, labor-consuming, cost-consuming and large in manual dependence degree are solved.

Description

technical field [0001] The present invention relates to the fields of environmental pollution control and environmental monitoring, in particular to a method for quickly tracing the source of water pollution that automatically screens upstream risk sources, which is used for rapid investigation and determination of suspected risk sources in water pollution incidents, and to calculate the pollution discharge contribution of suspicious risk sources Rate. Background technique [0002] Water environment safety is an important issue affecting people's life and production and regional economic development. Water environment regulation plays a vital role in the protection of the whole water environment, the control of water pollution and the maintenance of the health of the water environment. By tracing the source of water environment pollution, it is possible to effectively prevent the spread of pollutants, find the source of pollution, assist in the supervision and control of th...

AI Technical Summary

Problems solved by technology

Since the first type of method needs to install testing equipment at each sewage outlet, the cost investment is large, the workload of maintenance in the later stage is large, and it is time-consuming and complicated to operate, so it is impossible to pursue the responsibility of the enterprises involved in time; the second type of method is being carried out. The traceability of water pollution incidents often requires a large amount of computing and analysis resources, and the calculation speed of the model is slow, which is difficult to meet the rapid traceability of engineering or ordinary users; the third type of water pollution traceability method using remote sensing data relies on high resolution, high Spectral remote sensing images are expensive and are greatly affected by the accuracy of remote sensing interpretation methods. Existing remote sensing interpretation methods are difficult to meet the needs of rapid traceability of water pollution incidents in engineering; and the fourth type of method establishes risk source characteristics in advance. Database comparison can greatly reduce the workload of water pollution traceability and improve the efficiency of water pollution traceability

However, the existing fourth category methods still have deficiencies

Existing technologies often use visual interpretation to identify risk sources located upstream of monitoring points or polluted points when making upstream and downstream judgments.

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