Soil leachate collection device and collection method

A collection device and leachate technology, applied in separation methods, chemical instruments and methods, filtration separation, etc., can solve the problems of unsuitable soil leachate containing reduction-sensitive substances, etc., and achieve suitable for popularization and application, simple operation, and structure cleverly designed effects

Pending Publication Date: 2019-07-05
INST OF HYDROGEOLOGY & ENVIRONMENTAL GEOLOGY CHINESE ACAD OF GEOLOGICAL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] One of the purposes of the present invention is to provide a soil leachate collection device to solve the problem that existing collection methods are not suitable for soil leachate containing reduction sensitive substances

Method used

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  • Soil leachate collection device and collection method
  • Soil leachate collection device and collection method
  • Soil leachate collection device and collection method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[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...

Embodiment 2

[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 le...

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Abstract

The invention relates to a soil leachate collection device and a collection method. The soil leachate collection device comprises a receiving disc for receiving leachate, a reservoir connected to a bottom of the receiving disc through a connecting tube, a sampling bottle connected to the bottom of the reservoir through a sampling conduit, an air inflation device used for inflating the reservoir, an exhaust pipe for discharging a gas in the reservoir, and a controller for controlling the air inflation device. The design is clever, and long-time contact between the soil leachate and air can be effectively avoided, which is good for non-aerobic collection of the leachate containing a reductive sensitivity index; and oxidation and precipitation of the reductive sensitivity index are avoided, authenticity of collected leachate components is ensured, and an experimental error is avoided. The collection device has a simple structure, can be used conveniently, has low cost and is suitable forpopularization and application.

Description

technical field [0001] The invention relates to a soil detection device and method, in particular to a soil leachate collection device and collection method. Background technique [0002] The material composition of soil closely affects the migration and change behavior of soil ecological quality and environmental factors in contact with it. Soil column leaching experiment maintains the integrity of soil particle structure when obtaining soil leaching solution, and can also simulate natural dynamic infiltration processes such as precipitation and irrigation, so it is widely used in soil chemistry and soil pollution remediation research. [0003] At present, the method of collecting leachate in the natural leaching process of field soil is to pump it into the sampling bottle after a certain amount of solution is collected in the liquid reservoir. During the collection and extraction process, due to long-term exposure to In the air, the properties of the leach solution will c...

Claims

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Application Information

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IPC IPC(8): G01N33/24B01D36/02
CPCG01N33/24B01D36/02
Inventor 黄爽兵雷珊顾文龙苏炤新岳钧
Owner INST OF HYDROGEOLOGY & ENVIRONMENTAL GEOLOGY CHINESE ACAD OF GEOLOGICAL SCI
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