Seawater desalination system with energy recovery device and concentration difference battery power generation device

Abstract

The invention discloses a seawater desalination system with an energy recovery device and a concentration difference battery power generation device. The system comprises a pre-filtering unit, a reverse osmosis treatment unit, a membrane capacitance deionization treatment unit, a post-filtering unit and a concentration difference battery power generation unit, the reverse osmosis treatment unit iscoupled with the membrane capacitance deionization treatment unit, sea water desalination is carried out through coupling complementary waterway and circuit design in order to improve the water quality and realize device waterway water outlet continuity, pressure potential energy of high-pressure concentrated water in the reverse osmosis treatment unit and electric energy released by desorption in the membrane capacitance deionization treatment unit are recycled to optimize and save the energy consumption, and the concentration difference battery generates power by utilizing a concentration difference between the low-pressure concentrated seawater flowing out of the reverse osmosis treatment unit and pretreated seawater flowing out of the pre-filtering unit in order to further reduce theenergy consumption of the system and reduce harms of direct discharge of the concentrated seawater to the environment.

Description

technical field [0001] The invention relates to a seawater desalination system, in particular to a seawater desalination system with an energy recovery device and a concentration battery power generation device. Background technique [0002] With the overfishing and serious pollution in the coastal waters, people are turning their attention to the deep sea. Marine ranching carries new hope for the transformation of China's fishery industry. This also means that under the background of the national strategy, more and more fishing boats will sail to the deep sea. However, long-distance fishing boats sail for a long time, and fresh water is one of the important factors that determine whether the ship can continue to sail. Carrying a water storage tank cannot guarantee the quality of fresh water resources and occupies a large area. With the increasing maturity of seawater desalination technology and the reduction of process costs, seawater desalination devices can become an effe...

AI Technical Summary

Problems solved by technology

[0005] The equipment for the preparation of drinking water for ships (country: China, publication number: 207243648U, publication date: 2018-4-17) discloses a method of combining ultrafiltration, membrane capacitance deionization, and reverse osmosis devices, and also absorbs capacitance The ion system is placed in front of the reverse osmosis system and also has no energy recovery

Images