Cold energy desalination system and process for salt water treatment

Abstract

The invention discloses a cold energy desalination system for salt water treatment. The cold energy desalination system comprises a cold energy crystallization system, an ice-water separation system and an evaporation desalination and salt solidification system, the invention further discloses a cold energy desalination process for salt water treatment. The cold energy desalination process specifically comprises the following steps: S1, digging a shallow shaft to pump underground salt water; s2, freezing and desalting by using cold energy; s3, separating ice from water; s4, evaporation desalination and salt solidification; s5, using ice-melting fresh water and condensed water for irrigation and salt leaching; the system can carry out desalination and salt fixation treatment on the underground salt water of the saline-alkali soil, and realizes salt water freezing desalination and ice-melting fresh water irrigation salt leaching; the salt water freezing and desalting process is efficient; development and utilization of unconventional water resources such as saline water of the saline-alkali soil can be actively promoted, and ecological management which is low in investment, low in energy consumption and free of pollution on the saline-alkali soil is achieved.

Description

technical field [0001] The invention relates to a cold energy desalination system and process for salt water treatment, belonging to the technical field of salt water treatment and desalination. Background technique [0002] my country is a big country with saline-alkali land, and its total area ranks third in the world. According to the development concept of "clear water and lush mountains are golden mountains and silver mountains", there is still a gap in the treatment of saline-alkali land in my country. For example, there is no national standard for saline-alkali land treatment; There are many individual measures, few comprehensive measures, more short-term governance, and less long-term mechanisms. Saline-alkali land is a stubborn disease on the earth, and it is a very precious land resource. At present, my country's saline-alkali land restoration is in a critical period, and it is also a golden period. Ecological restoration of saline-alkali land is an important tas...

AI Technical Summary

Problems solved by technology

[0004] The existing technology does not have effective measures for the improvement of saline-alkali land, so it is necessary to propose a cold energy desalination system and process, which can desalinate and fix the salt water underground in saline-alkali land, and can actively promote the development of saline-alkali land salt water, etc. The development and utilization of unconventional water resources, in the areas where fresh water resources are scarce, realize the ecological management of saline-alkali land with low investment, low energy consumption and no pollution

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