The invention discloses a double-pump multiphase extraction device and a control method thereof applied to soil
groundwater remediation. The extraction device comprises an extraction well
system, a gas-phase extraction and
treatment system and a liquid-phase extraction and pretreatment
system; the gas-phase extraction and
treatment system comprises a gas filter, a
vacuum pump, a cooling water tank and
activated carbon adsorption tanks; and the liquid-phase extraction and pretreatment
system comprises an oil-water separator, an
air compressor, a main control board, an air bag pump and a liquid level probe, wherein the liquid level probe is connected to the main control board through a wire, the air bag pump communicates with the
air compressor through a
compressed air pipe and communicates with the oil-water separator through a water outlet
pipe, a
compressed air electromagnetic valve is arranged on the
compressed air pipe and is connected to the main control board, and the oil-water separator is connected to a
wastewater treatment system through a water outlet valve and communicates with a
hazardous waste recycling device through an emptying valve. The double-pump multiphase extraction device and the control method thereof applied to the soil
groundwater remediation have the advantages that the position of extracted
groundwater can be adjusted in real time, and the requirement for flexibly adjusting the parameters of the remediation work can be met.