Polluted site groundwater quality layered monitoring system and method

Abstract

The invention discloses a polluted site groundwater quality layered monitoring system and method. The system comprises a well mouth protection box on a well mouth of a monitoring well, a cross beam is arranged in the well mouth protection box, an adjustable hanging ring and a fixed hanging ring are installed on the cross beam, a cable connects a bottom layer monitoring probe, a middle layer monitoring probe and a top layer composite monitoring probe in series and then penetrates through the adjustable hanging ring to be connected with a control host, and the control host is hung on the fixed hanging ring through a mooring rope. The control host comprises a main controller and a remote transmitter which are installed in a host shell, and an air pressure sensor and an overflow sensor are installed on the host shell. An anti-theft sensor and a signal antenna are arranged in the wellhead protection box. The signal antenna is connected with the main controller through the remote transmitter. The bottom layer monitoring probe, the middle layer monitoring probe, the top layer composite monitoring probe, the air pressure sensor, the overflow sensor and the anti-theft sensor are connected with the main controller. The water quality data can be obtained from underground water in a layering manner, and underground water pollution conditions are truly and comprehensively reflected.

Description

technical field [0001] The invention relates to a system and method for stratified monitoring of underground water quality in polluted sites, belonging to the technical field of underground polluted water monitoring. Background technique [0002] With the increase of population density and the rapid development of industrial and agricultural production, the contradiction of water resources has become increasingly prominent, and the problem of groundwater pollution has gradually become prominent. In recent years, although many polluting enterprises in the city have been ordered to relocate or even close down, due to the large number of abandoned contaminated sites, the quality of the city's groundwater has generally deteriorated, and even some areas have deteriorated, seriously threatening human health and the ecological environment. Faced with the above-mentioned status quo, my country has already started the work of remediating polluted sites. However, groundwater pollution...

AI Technical Summary

Problems solved by technology

Therefore, this electrode-type conductivity sensor needs frequent maintenance, calibration and replacement, and the maintenance cost is high

[0005] Second, the existing conductivity detector is only designed with one monitoring probe, which can only monitor one point fixedly for one monitoring well, and cannot realize layered fine monitoring of groundwater

[0006] Third, when the water level in the monitoring well is raised due to water inrush, river water surge, etc., or even overflows the wellhead, the conductivity detector will be soaked in polluted water

Although some conductivity detectors have a certain waterproof ability, after a long time of immersion, water ingress into the equipment will also cause damage to the circuit board or even scrap it

[0007] Fourth, most of the monitoring wells are deployed far away from urban areas and unattended. This has the problem of weak maintenance and management in the later stage, and the monitoring wells are vulnerable to intentional or unintentional damage by personnel. For example, in some key industrial areas, some people try to avoid responsibility Destroying the manhole cover and placing the monitoring probe in clean water will cause the monitoring data to fail to truly reflect the water pollution situation, and the management department cannot effectively understand the pollution situation in a timely manner.

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