Double-filter-element automatic mutual water purification and backwashing type seawater desalination method and device

Abstract

The invention aims at providing a double-filter-element automatic mutual water purification and backwashing type seawater desalination method and device. The method is realized through adopting the following device: the device is composed of two sets of water purification primary-filtering filter elements, jet devices with the same specification and water discharge pipelines at water discharge sides of the jet devices and a plurality of water discharge faucets; when the water discharge faucet connected with any pipe at one side of any jet device is opened to discharge domestic water, pure water generated by the water purification primary-filtering filter element connected with the other jet device is used for carrying out backwashing on the jet device of the water purification primary-filtering filter element, so that the water purification primary-filtering filter element is purified; conversely, the other water purification primary-filtering filter element is also purified; therefore, when the water purification primary-filtering filter elements provided by the invention are used as a water purification filter to carry out primary filtering, the two water purification primary-filtering filter elements work simultaneously and a pure water flow is great; automatic backwashing is realized at any time when water is used, and the blocking of each water purification primary-filtering filter element is prevented; the service life of the filter elements is ensured; the device is very simple and convenient to operate and a whole process is automatically finished, without the needof utilizing power.

Description

technical field [0001] The invention relates to a seawater desalination method and device, in particular to a seawater desalination method and device for automatic mutual water purification and backwashing of double filter elements, belonging to the technical field of seawater desalination water treatment. Background technique [0002] The shortage of fresh water resources in the world has become a growing concern. Some people predict that there will be competition for coal in the 19th century, oil in the 20th century, and water in the 21st century; as an open source and incremental technology for water resources, seawater desalination has become an important way to solve the global water resource crisis. The biggest advantage of reverse osmosis is energy saving. Its energy consumption is only 1 / 2 of that of electrodialysis and 1 / 40 of that of distillation. Therefore, since 1974, developed countries such as the United States and Japan have successively shifted their develop...

AI Technical Summary

Problems solved by technology

When working, when using purified water, after opening the water purification valve, the tap water enters through the water inlet ends of the two ejectors respectively, is discharged from the suction ends of the two ejectors, and enters the water inlet ends of the two primary water purification filter elements respectively. , and then purified by two primary water purification filter elements, working at the same time, so as to produce large-flow filtered purified water, and then respectively pass through the water outlet of the two primary water purification filter elements to collect, and the pipe is connected to the precision filter element at the rear end for later use. The precision filter element at the end is further purified to realize the primary filtration function of water purification; when the drain faucet connected to any pipe on one side of any jet is opened for domestic water, the purified water produced by the primary filter element connected to the other jet In the opposite direction, the primary filter element of water purification is backwashed through its own jet, so that the primary filter element of water purification can be purified; The purified water produced by the primary water purification filter element connected to this ejector also backwashes the other primary water purification filter element in the opposite direction through the self-contained ejector, so that the other primary water purification filter element is also purified, so that , when using the primary water purification filter element of the present invention as the primary filtration of the water purification filter, it not only has two primary water purification filter elements working at the same time, the water purification flow rate is large, and it also has the ability to carry out the process regardless of opening the drain tap connected to any jet. When domestic water is discharged, one primary water purification filter element will work to perform automatic backwashing for the other primary water purification filter element, so as to realize automatic backwashing at any time when used, timely remove the pollutants retained by each primary water purification filter element, and prevent various The clogging feature of the primary filter element for water purification solves the problem of easy blockage and disassembly and cleaning of the primary filter element for water purification, and ensures the service life of the fine filter element. Moreover, the operation is very simple, and the whole process is automatically completed without electricity

Images