An energy recovery device for a reverse osmosis seawater desalination system

Abstract

The invention discloses an energy recovery device for a reverse osmosis seawater desalination system, which comprises a water inlet assembly, a dosing assembly, a compression assembly, and a deceleration assembly. The water inlet assembly is located at one end of the device, and one side of the water inlet assembly is fixedly installed with The dosing assembly, the end of the water inlet assembly away from the dosing assembly is fixedly connected with a compression assembly, and the deceleration assembly is fixedly installed in the center of the compression assembly. The invention is scientific and reasonable, safe and convenient to use. The pressure of seawater on the semi-permeable membrane is greater than the osmotic pressure of seawater to infiltrate and separate fresh water. In the prior art, the water level pressure is used to infiltrate and separate the way and occupy space, and it needs a large device to complete. This device is driven by a reduction gear. The ball valve regularly turns on and off the high-concentration brine drainage pipeline, so that the high-concentration brine can be discharged from the inside of the compressed pipe fitting at regular intervals, thereby replacing low-concentration seawater for desalination and separation, and enhancing the separation efficiency of fresh water.

Description

technical field [0001] The invention relates to the technical field of seawater desalination, in particular to an energy recovery device for a reverse osmosis seawater desalination system. Background technique [0002] Seawater desalination is the use of seawater desalination to produce fresh water. It is an open-source incremental technology to realize the utilization of water resources. It can increase the total amount of fresh water and is not affected by time, space and climate. It can ensure a stable water supply for coastal residents and industrial boilers. The process of obtaining fresh water in China is called seawater desalination. The seawater desalination methods currently used include seawater freezing method, electrodialysis method, distillation method, reverse osmosis method, and the profitable ammonium carbonate ion exchange method. Currently, reverse osmosis using reverse osmosis membrane With the advantages of simple equipment, easy maintenance and equipment...

AI Technical Summary

Problems solved by technology

[0002] Seawater desalination is the use of seawater desalination to produce fresh water. It is an open-source incremental technology to realize the utilization of water resources. It can increase the total amount of fresh water and is not affected by time, space and climate. It can ensure a stable water supply for coastal residents and industrial boilers. The process of obtaining fresh water in China is called seawater desalination. The seawater desalination methods currently used include seawater freezing method, electrodialysis method, distillation method, reverse osmosis method, and the profitable ammonium carbonate ion exchange method. Currently, reverse osmosis using reverse osmosis membrane With the advantages of simple equipment, easy maintenance and equipment modularization, the method quickly occupied the market, and gradually replaced the distillation method to become the most widely used method. More than 100 scientific research institutions in more than 10 countries in the world are conducting seawater desalination research. , there are hundreds of seawater desalination facilities with different structures and capacities in operation. A modern large-scale seawater desalination plant can produce thousands, tens of thousands, or even nearly one million tons of fresh water every day. The cost of desalinated water is constantly decreasing. The country has already reduced the price to that of tap water, and the amount of desalinated water in some areas has reached the water supply scale of the country and cities, but the existing seawater desalination devices are relatively large, occupying space, and lack relatively small seawater desalination devices to desalinate at low cost And use desalinated fresh water, so people need a reverse osmosis desalination system energy recovery device to solve the above problems

Images