Abstract
The reverse osmosis method has developed extremely rapidly in recent years and has become the most competitive seawater desalination technology in the world, and it has been widely used in all aspects. Large-scale reverse osmosis desalination plants cannot provide fresh water resources in areas with insufficient water resources and limited space. Therefore, this paper proposes a research plan for a small seawater desalination device based on reverse osmosis, which is mainly suitable for handling emergencies, disaster relief, desert areas and outdoor activities and other needs for timely freshwater resources. It mainly includes pretreatment modules, a reaction infiltration module, a post-processing module and an energy supply module. Detailed design calculations are carried out for the small-scale reverse osmosis membrane system, including the selection and quantity and arrangement of membranes. Subsequently, the one-stage two-stage small-scale reverse osmosis membrane system was modeled, and its energy consumption was analyzed theoretically from the perspectives of specific energy consumption and energy utilization efficiency; the main influencing factors were clarified, and the optimal recovery rate for system operation was determined to be 20%–30%. Finally, an experimental prototype was built to conduct relevant experiments to determine the influence trend of pressure, temperature, concentration, and flow rate on the operating performance of the reverse osmosis system.
Highlights
Water is an indispensable substance for the maintenance of life on the earth and the source of continuous progress and development of human society
The purpose of this paper is to put forward a convenient mobile design scheme based on the reverse osmosis method, based on existing small seawater desalination equipment, which aims to increase the versatility of small seawater desalination equipment based on ensuring fresh water production and fresh water quality, to meet the requirements of use in special environments
The reverse osmosis seawater desalination device is mainly composed of a pretreatment modsmall-scale reverse osmosis seawater desalination device is mainly composed of a preule, a reverse osmosis module,osmosis a post-treatment and an energy treatment module, a reverse module, amodule post-treatment modulesupply and anmodule
Summary
Water is an indispensable substance for the maintenance of life on the earth and the source of continuous progress and development of human society. Rapid urbanization and global climate change, traditional water sources closely related to human life such as lakes, rivers and groundwater resources are insufficient to meet the increasing demand for high-quality drinking water [1,2]. The efficiency of the high-pressure pump is constantly improving, making the reverse osmosis system perform well according to safety considerations and in lowering energy consumption. Its advantages such as convenience, convenient water production and low energy consumption make it advantageous compared to other methods in small seawater desalination equipment and reverse osmosis technology that has been widely used [3,4]
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