The invention provides a cyclic extraction type
groundwater quality detection equipment
system. The
system comprises an extraction
pipe, a self-priming pump, a water inlet
pipe, a water tank, a watertank outlet
pipe and a water return pipe, wherein the lower end of the extraction pipe extends into a sampling well; an inlet of the self-priming pump is connected with the upper end of the extractionpipe; the water inlet pipe is connected with an outlet of the self-priming pump; a water inlet of the water tank is communicated with the water inlet pipe, and a plurality of
water quality parametersensors with different indexes are distributed in the water tank; the water tank outlet pipe is communicated with a water outlet of the water tank; the upper end of the water return pipe is connectedwith the water tank outlet pipe, and the lower end extends into the position, below the
groundwater level and close to the water surface, of the sampling well. A
water sample is extracted from the bottom of the sampling well,
water quality is detected by detection equipment on the ground, meanwhile, the
water sample is not reserved, the extracted
groundwater is reinjected into the upper
water level layer of the same sampling well in real time,
groundwater sampling is facilitated for a
technician while
groundwater quality is monitored on line, disturbance to quality of sampling water from the well bottom is reduced to the greatest extent, and
water level in the well is guaranteed.