Gate control heavy pollution small watershed pollutant flux observation method

Abstract

The invention relates to the technical field of pollutant flux high-frequency observation and calculation, and discloses a gate control heavy pollution small watershed pollutant flux observation method, which comprises the steps of obtaining a water level-water quantity relational expression based on river terrain data; according to the gate control switch and rainfall conditions, obtaining the daily mean value of the river sewage amount according to the calculated pollutant flux when the water amount balance relationship under the water level change condition of the heavy pollution closed small watershed water body does not consider groundwater supplementation, gate station non-scheduling and non-rainfall. The method has the beneficial effects that the formula fitting degree is high, thewater quantity change before and after drainage is directly read according to the water level change; the real-time, automatic and intelligent monitoring of the pollutant flux is realized through theconnection of a local area network and an intelligent terminal.

Description

technical field [0001] The invention relates to the technical field of high-frequency observation and calculation of pollutant flux, in particular to a gate-controlled pollutant flux observation method in a heavily polluted small watershed. Background technique [0002] The flux of river pollutants is the core index for evaluating the effect of river basin water environment governance. In recent years, the state has continuously strengthened the rectification of water environmental problems such as inferior V water bodies and urban black and odorous water bodies. As far as the water catchment area is concerned, when the water level is at a specific height, the drainage is usually controlled by gates (electric drainage, gates) to dispatch drainage, the scope of the basin is determined, and it is mainly replenished by human production and life or rainfall. The water balance relationship is simple. At the same time, due to hydrological monitoring Due to high construction costs...

AI Technical Summary

Problems solved by technology

In recent years, the state has continuously strengthened the rectification of water environmental problems such as inferior V water bodies and urban black and odorous water bodies. As far as the water catchment area is concerned, when the water level is at a specific height, the drainage is mostly dependent on gate control (electric drainage, gate) to dispatch drainage, the scope of the basin is determined, and it is mainly replenished by human production and life or rainfall. The water balance relationship is simple. At the same time, due to hydrological monitoring It is not suitable for large-scale construction in small watersheds due to high construction costs, difficult maintenance, and slow water flow, so it is difficult to calculate the total amount of pollutants discharged into receiving water bodies

[0003] The flux of river pollutants is the product of river flow and water quality concentration. At present, domestic flow data are mostly obtained by short-sequence monitoring methods such as acoustic Doppler current meter (ADCP) and hydrological ship current meter. The flow monitoring frequency is low and the cost is high. Unsynchronized with water quality monitoring, scattered and difficult to share data, few monitoring points and other factors lead to large errors in pollutant flux estimation, and it is difficult to effectively calculate the proportion of pollutant load entering the receiving water body

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