Flowing electrode electro-adsorption water purification method with low wastewater rate and water purifier

Abstract

The invention provides a flowing electrode electro-adsorption water purification method with low wastewater rate and a water purifier. The method comprises the following steps that filtered tap wateris subjected to desalination treatment through a flowing electrode electro-adsorption module and an electrodialysis desorption module, drinking water is obtained after the filtered tap water is treated by the flowing electrode electro-adsorption module, and wastewater with high salt content is obtained after the filtered tap water is treated by the electrodialysis desorption module. According to the flowing electrode electro-adsorption water purification method with low wastewater rate, the wastewater rate is 5%, the available water rate reaches up to 95%, the water is saved while the water ispurified, mineral ions (calcium, magnesium and potassium) beneficial to human bodies can be retained, and the produced water belongs to healthy water; and a flowing electrode electro-adsorption technology is adopted, a fixed electrode of traditional CDI is converted into a flowing electrode, so that the adsorption capacity is improved, an electrodialysis technology is adopted as a desalination regeneration unit of brine in the flowing electrode, the flowing electrode is in an unsaturated state all the time, and therefore the volume of the flowing electrode does not need to be too large.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to a low waste water rate flow electrode electrosorption water purification method. Background technique [0002] China is a country with poor water resources, and its per capita water resources are only 1 / 4 of the world's average level. Water conservation is of great significance to our country. However, with the frequent occurrence of water pollution incidents and people's pursuit of a healthy life, reverse osmosis water purifiers have begun to enter more and more families. The ability to effectively remove harmful substances and impurities and high water purification efficiency has become a common selling point of reverse osmosis water purifiers. The reverse osmosis water purifier is named for its extreme purification. In addition to water molecules, all pollutants, germs, and even all minerals in the water are also filtered out. The purified water is what we call pur...

AI Technical Summary

Problems solved by technology

[0006] The first purpose of the present invention is to provide a flow electrode electro-adsorption water purification method with a low waste water rate, to solve the problems that the existing water purification methods cannot continuously absorb and regenerate, and the high waste water rate of the reverse osmosis water purifier is high, and There is also the problem that the beneficial mineral ion content of the obtained water is low, and most of them are pure water. In the described low waste water rate flow electrode electrosorption water purification method, the waste water rate is 5%, and the good water rate is as high as 95%. At the same time as water, it also saves water and can retain mineral ions (calcium, magnesium, potassium) that are beneficial to the human body. The water produced is healthy water

[0007] The second object of the present invention is to provide a kind of said water purifier, to solve the problem that the adsorption and regeneration of the traditional electric adsorption (CDI) desalination technology is completed in a desalination tank, the desalination process cannot be carried out continuously, repeated intermittent Adsorption and regeneration make the operation of the system very troublesome, and the flow channel of concentrated water and fresh water is the same flow channel. This operation method is difficult to achieve a high water recovery rate. The water purifier uses the flow electrode as the adsorption water purification unit, while the electrodialysis technology is used as the desalination regeneration unit of the brine in the flowing electrode slurry, and the adsorption water purification unit and the desalination regeneration unit are carried out separately and simultaneously, which can realize continuous adsorption and regeneration

Images