System for comprehensive utilization of concentrated seawater by using solar pond

A technology for solar ponds and concentrated seawater, applied in solar heating systems, seawater treatment, solar thermal energy, etc., can solve the problems of large corrosion of seawater devices, impact on the environment, and high seawater salinity, so as to reduce operating costs, reduce impacts, and solve the problem of salt water. The effect of the use of the product
CN103449546AInactive Publication Date: 2013-12-18ZHEJIANG MARINE DEV RES INST
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZHEJIANG MARINE DEV RES INST
Publication Date
2013-12-18
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a system for comprehensive utilization of concentrated seawater by using a solar pond. The system comprises a solar pond part and a seawater desalination part, wherein the concentrated seawater is conveyed to the solar pond part, and the seawater desalination part desalinates seawater by adopting a distillation method; the seawater in the solar pond part is subjected to salt gradient exchange for 1-2 months, then the seawater of a lower convection layer is introduced into a bottom heat exchanger, the bottom heat exchanger performs heat exchange with the seawater desalination part, and fresh water obtained by the seawater desalination part is respectively injected into a fresh water pond and an upper convection layer of the solar pond. The solar pond is combined with the seawater desalination part to realize effective utilization of the energy source of the solar pond, so that an energy source for distillation method seawater desalination is provided, the cost for seawater desalination is reduced, the fresh water and concentrated seawater passing through the seawater desalination part are treated and then can be used as supplemental water of the solar pond and a water supply for salt industry production, the effective utilization of energy and water resources is realized to the utmost extent, and the running cost of the system is reduced.
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Description

technical field

[0001] The invention relates to the field of desalination of seawater, in particular to an environment-friendly, cost-reducing, and recyclable solar pond concentrated seawater comprehensive utilization system.

[0002] Background technique

[0003] With the development of my country's economy and society, the lack of fresh water resources has become one of the important factors restricting the development of coastal economy. Seawater desalination technology has become an important means to solve the shortage of freshwater resources in my country's coastal areas. While the scale of seawater desalination projects continues to increase, The discharge of its concentrated seawater has always been the focus of social attention. At present, in addition to a few domestic seawater desalination projects that have comprehensive utilization of concentrated seawater, most of the seawater desalination plants directly discharge the concentrated seawater, which will have...

Claims

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