Three-cylinder reverse osmosis seawater desalting and concentrated seawater energy recycling system

Abstract

The invention discloses a three-cylinder reverse osmosis seawater desalting and concentrated seawater energy recycling system, and relates to seawater desalting. The three-cylinder reverse osmosis seawater desalting and concentrated seawater energy recycling system comprises a power device, energy recycling devices, a reverse osmosis membrane and a water inlet pipe, wherein the power device and the water inlet pipe are both connected with the energy recycling devices; and the reverse osmosis membrane is connected with the energy recycling devices in two directions. The three-cylinder reverse osmosis seawater desalting and concentrated seawater energy recycling system is characterized by comprising three sets of mutually linked energy recycling devices, wherein each energy recycling device consists of a piston, a water pressure cylinder, a water feeding and draining valve and an energy recycling valve; the pistons are arranged on the water pressure cylinders and are connected with the power device; the water pressure cylinders are provided with raw material seawater inlets and concentrated seawater inlets; the water feeding and draining valves are connected with the raw material seawater inlets and the concentrated seawater inlets; the reverse osmosis membrane is connected with the energy recycling valves; the water inlet pipe are connected with the water feeding and draining valves; and the water feeding and draining valve are connected with waste concentrated seawater discharging ports. By the three-cylinder reverse osmosis seawater desalting and concentrated seawater energy recycling system, pressure energy of high-pressure concentrated seawater discharged by the reverse osmosis membrane is fully used, and the energy consumption is effectively reduced.

Description

technical field [0001] The invention relates to seawater desalination, in particular to a three-cylinder reverse osmosis seawater desalination concentrated seawater energy recovery system capable of continuous water inflow, stable flow, stable water pressure and energy saving. Background technique [0002] The 21st century will be the century of water. my country is a country with abundant water resources, but also one of the most water-scarce countries. According to a research report released by the Chinese Academy of Engineering in 2000, by around 2030, when China’s population increases to 1.6 billion, there will be a water consumption peak, and the per capita water resources will be close to the international water shortage standard. By then, the national water consumption will reach the annual 700 billion to 800 billion cubic meters, while the actual total available water resources in my country is 800 billion to 950 billion cubic meters, and the water consumption is clo...

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Problems solved by technology

[0006] What the present invention aims to solve is the problem of unreasonable design of the existing energy recovery device used in the seawater desalination process, and provides a three-cylinder reverse osmosis seawater desalination concentrated seawater energy recovery system with uninterrupted, stable flow and high energy utilization rate

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