Hybrid MSF (multistage flash)/RO (reverse osmosis) sea water desalination system

Abstract

The invention provides a hybrid MSF (multistage flash) / RO (reverse osmosis) sea water desalination system and is applied to the technical field of sea water desalination. The system comprises a water pump, sea water pre-treatment equipment, an RO subsystem, a distillation subsystem, clean energy generating equipment and solar heat collection equipment, wherein the water pump is used for obtaining sea water; the sea water pre-treatment equipment is used for pre-treating the sea water; the RO subsystem is used for desalinating the pre-treated sea water to obtain fresh water through an RO technology and providing strong brine produced in the desalination process for the distillation subsystem; the distillation subsystem is used for desalinating the strong brine produced by the RO subsystem to obtain fresh water through a distillation technology; the clean energy generating equipment is used for generating electricity with clean energy and providing electric energy for the RO subsystem and the distillation subsystem; and the solar heat collection equipment is used for generating heat through solar energy and providing heat energy for the distillation subsystem. According to the system, the strong brine produced by the RO subsystem is used as feed water of the distillation subsystem, characteristics of the RO technology and the distillation technology are effectively utilized, and the system has the advantages of high sea water desalination efficiency, low production cost, proneness to popularization and use and the like.

Description

technical field [0001] The invention relates to the technical field of seawater desalination, in particular to a thermal film coupled seawater desalination system. Background technique [0002] Water resources are the material basis for the production and life of human society. The per capita freshwater consumption in my country is only 1 / 4 of the world average level, and the pressure on water resources is huge. Especially in coastal areas, due to the developed economy, the consumption of water resources is huge. At present, more than 300 coastal cities in my country are facing water shortage problems. The shortage of water resources not only limits the development speed of the local economy and the further improvement of people's quality of life, but also causes problems such as seawater intrusion and ground subsidence caused by excessive exploitation of groundwater. Therefore, using seawater desalination technology to obtain fresh water from the ocean is an effective wa...

AI Technical Summary

Problems solved by technology

For example, the current solar photovoltaic and photothermal power generation systems still have the problems of low efficiency and high cost. If solar power is used to drive the reverse osmosis seawater desalination system, the initial investment will be too large and the economic benefits will be poor.

At present, large-scale energy storage equipment is still in the research and development stage, and the cost of electricity storage is relatively high, which will also reduce the economic benefits of seawater desalination systems, resulting in the failure of large-scale promotion of seawater desalination systems driven by wind energy and solar energy

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