Solar shallow-layer underground salt water in-situ desalting device

Abstract

The invention discloses a solar shallow-layer underground salt water in-situ desalting device which comprises a solar panel, a storage battery and a low-temperature evaporation device. The solar panel generates power and stores the power into the storage battery, the storage battery powers the low-temperature evaporation device which is composed of a heating wire, a temperature detector and a temperature control switch, the heating wire is buried around a soil water-containing layer, the temperature detector is buried at a middle area of the heating wire, and the temperature control switch is connected with the storage battery. By using the device, water content of a soil surface layer area can be increased, and a certain amount of water can be provided to plants planted on a surface layer. Through low-temperature evaporation effect of the device, capillary effect of soil is changed to enable fresh water to move towards the soil surface layer, movement of salt water is controlled effectively, and the device has effect of preventing soil secondary salination. The device is directly mounted between shallow-layer underground water and an interface of the soil and directly heats a target area, so that heat loss in the process is reduced effectively, overall energy source utilization efficiency of the device is improved, power needed for running per day can be reduced, and designing flexibility of the device is improved.

Description

technical field [0001] The invention relates to a salt water desalination device, in particular to an in-situ desalination device for shallow underground salt water. Background technique [0002] With the development of society, the problem of water shortage is becoming more and more serious, so the development of unconventional water resources is gradually increasing. At present, the utilization of unconventional water resources such as underground salt water, sea water, and rainwater provides a new direction for solving the problem of water shortage. In my country's coastal areas, there is a large amount of underground saline water, and the utilization of shallow underground saline water is currently limited to small-scale farming and industrial cooling water. Except for the high salt content, this part of the shallow groundwater has not exceeded the standard, so it has great utilization potential. Taking Tianjin as an example, the distribution area of ​​shallow undergro...

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Problems solved by technology

[0004] In order to solve the problems existing in the prior art, the present invention provides a solar shallow underground saline water in-situ desalination device, which solves the problems of difficulty in converting underground saline water into fresh water and low utilization rate in the prior art

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