Soil leachate collection device and collection method

[0024] Example 1: Soil leachate collection device.

[0025] Such as figure 1 As shown, the present invention mainly includes a receiving tray 1, a liquid reservoir (a cylinder body 7, a baffle plate 8, a liquid discharge piston 9, a low liquid level sensor 10 and a high liquid level sensor 11), an exhaust pipe 18, and a sampling bottle 17 , inflatable device (inflatable tube 15 and air pump 14) and controller 13 and other parts.

[0026] The receiving tray 1 is used to receive the soil leachate and perform preliminary filtration on it. The receiving tray 1 includes a funnel-shaped tray body, a filter plate arranged at the mouth of the tray, two layers of nylon gauze 4 arranged below the filter plate, and a quartz sand layer 3 arranged between the two layers of nylon gauze 4 . The plate body of the filter plate is sunken toward the bottom of the plate body, the nylon gauze 4 is a 100-mesh nylon gauze 4, and the particle size of the quartz sand in the quartz sand layer 3 is 40-60

[0031] Embodiment 2: Soil leachate collection method.

[0032] Soil leachate collection method of the present invention, comprises the steps:

[0033] 1) Set up the soil leachate collecting device as mentioned above, and make the liquid collecting section of the cylinder 7 lower than the bottom of the receiving tray 1 .

[0034]2) The leachate received and pre-filtered by the receiving plate 1 continuously enters the liquid chamber of the cylinder 7 through the connecting pipe 5, and the liquid level gradually rises, and the liquid discharge piston 9 continues to rise with the increase of the leachate in the cylinder 7 Move (during this process, the volume of the liquid chamber gradually increases, and the volume of the gas chamber gradually decreases). While the liquid discharge piston 9 moves upward, the hard strut 18 - 3 in the exhaust pipe 18 pushes the exhaust piston 18 - 1 to move upward under the action of the liquid discharge piston 9 .

[0035] 3) When the liquid level