Sea sand desalination treatment technique and system

Abstract

The present invention discloses a sea sand desalination treatment technique. The treatment technique comprises the steps of a) immersing sea sand into a dechlorinating agent to perform dechlorination of the sea sand; b) separating the sea sand from the dechlorinating agent solution; and c) heating the dechlorinated sea sand. Besides, the present invention further discloses a sea sand desalination system. According to the present invention, ozonated water or a sodium persulfate acidic solution is used to perform dechlorination on the sea sand, wherein a chemical reaction occurs in the dechlorination process and chloride ions turn to chlorine gas; the sea sand is separated from the dechlorinating agent solution; and the chlorine gas remained on the surface of the sea sand is vaporized after heating, thereby preventing the chlorine gas from causing damage to the human body in the process of sea sand utilization and meanwhile achieving a dechlorination effect. The present invention can achieve the dechlorination effect simply by using the ozonated water or the sodium persulfate acidic solution, and compared with the effect and cost of dechlorination by rinsing with fresh water, the effect of desalination by using the dechlorinating agent is better and the cost of desalination is lower.

Description

technical field [0001] The invention relates to a sea sand desalination treatment system, and also relates to a sea sand desalination treatment system. Background technique [0002] With the rapid development of my country's construction market, river sand resources are increasingly scarce, which can no longer meet the demand for construction raw materials. It is increasingly urgent to rationally use sea sand resources in coastal areas to alleviate the shortage of river sand resources. my country's coastal areas, especially the coastal areas in western Guangdong, are rich in sea sand resources, but because sea sand contains sodium chloride and other chloride salts, which will accelerate the corrosion of steel bars, sea sand that has not been desalinated or unqualified will seriously affect the quality of buildings. life, thus limiting the application of sea sand. [0003] The latest technical measures for chlorine salt in sea sand at home and abroad mainly include: sea sand ...

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Problems solved by technology

[0006] China Shanghai Institute of Building Research (Group) Co., Ltd. also published an article on "Research on the Performance of Sea Sand and New Purification Process". This technical article was published on Wanfang Data Network, and the article number is 1007-046X(2011)05 -0012-03, the brief description of the process of this article is as follows: the first fresh water rinsing—fresh water immersion—the second fresh water rinsing—re-soaking—fresh water recycling. Although this method can achieve the effect of saving water to a certain extent, but Since the fresh water has been reused many times, there must be more chlorine salt in the water, and the use of recycling to clean the sea sand cannot meet the needs of the building. If the fresh water is not recycled, it will cause excessive fresh water consumption

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