Shallow groundwater pollutant monitoring system

Abstract

The invention discloses a shallow groundwater pollutant monitoring system which comprises a monitoring well and a sampling assembly, and the monitoring well is sequentially divided into a protection column, a middle column and a collection column from top to bottom; the upper part and the lower part of the collecting column are respectively a cylinder and a cone, a plurality of groups of small holes for underground water to permeate are circumferentially formed in the pipe wall of the collecting column positioned at the lower part of the cylinder, and a filter material replacing assembly is arranged on the inner wall of the collecting column positioned below the small holes. The system is suitable for monitoring water quality observation indexes of underground water, especially in-situ monitoring is realized, and the sampling difficulty is reduced and the sampling process is simple and rapid under the condition of monitoring shallow underground water at different depths.

Description

technical field [0001] The invention relates to the technical fields of environmental science, groundwater pollution and soil science research, in particular to a shallow groundwater pollutant monitoring system. Background technique [0002] With the development of agricultural modernization, the extensive use of chemical fertilizers and pesticides has become the most important factor in soil environmental pollution. Among them, pesticide residues have a serious impact on the water environment. The study found that the amount of water-soluble pesticides accounts for more than 50% of the total pesticides. After being applied to the paddy field, it is mostly dissolved in the paddy field water, and it is easy to pollute the water environment through surface runoff and soil leakage. [0003] Shallow groundwater refers to the aquifer within 60 meters below the surface. Due to its shallow burial layer and no deep rock filtration, the water body is easily polluted by sewage disch...

AI Technical Summary

Problems solved by technology

[0004] In recent years, various pollutant migration models have been established to simulate the fate and migration of pesticides and other agricultural chemicals and their residues in soil and groundwater; however, such studies are limited to indoor simulations or computer simulations, and cannot It truly reflects the actual complex and changeable field conditions, and there is still a lack of devices that can monitor shallow groundwater pollutants for analysis and treatment of shallow groundwater; Groundwater pollutant monitoring device to optimize the solution to the above problems

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