Plant root system imitation water collecting device

Abstract

The invention discloses a plant root system imitation water collecting device. The plant root system imitation water collecting device comprises a NaCl solution storage chamber, a super-hydrophilic composite material fibrous membrane, a hydrophilic nanofiltration membrane, a rubber piston, a spring support device, a limiting device, a displacement sensor, a fresh water collection tank, a reverse osmosis device, a high-pressure pump, a pressure-reducing valve, a pipeline switch, and a concentrated brine inlet; a low-concentration NaCl solution in the NaCl solution storage chamber enters the high-pressure pump through the outlet of a pipeline on the lower part, the inlet pressure of the solution is increased, then the fresh water enters the fresh water collection tank after passing through the reverse osmosis device, and the high-pressure concentrated brine passes through the pressure-reducing valve and then returns to the NaCl solution storage chamber. According to the plant root systemimitation water collection device, water is attempted to be obtained from soil for the first time, and since the binding force between the soil and the water is relatively strong, the super-hydrophilic composite material fibrous membrane and the high osmotic pressure of the high-concentration NaCl solution are adopted to take the water from the soil in a mighty mode to obtain the NaCl solution with a low concentration; and then the reverse osmosis device is used for desalinate to continuously obtain the fresh water.

Description

technical field [0001] The invention belongs to the technical field of water-making equipment, and in particular relates to a water collection device imitating plant roots. Background technique [0002] With the rapid development of the global economy and the continuous increase of the population, the shortage of global fresh water resources has become an urgent problem to be solved. The thickness of the earth's atmosphere is 100,000 meters, and the water vapor content in it can reach 425g / m 3 , so making water from the air is an effective solution to alleviate the shortage of fresh water resources. But compared with the water content in the soil, the water content in the air is basically a drop in the bucket. Obtaining fresh water resources from the soil is also a good choice, but due to the relatively strong binding force between water and soil, it is very difficult to obtain water from the soil. [0003] For terrestrial plants, the water in the soil flows from the soil ...

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Problems solved by technology

[0007] Aiming at the problem of lack of existing fresh water resources, th

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