In recent years, ecological and environmental problems have not been effectively addressed, and with the development of the industrial field, the requirements for industrial water are getting higher and higher. Many processes in industrial production require the use of water, and these water quality requirements are often higher than ordinary tap water, hence the industrial water treatment industry.
Some industries have high requirements for water quality, and high purity water is required to meet their production needs, and the effluent quality of general high purity water equipment can reach 10-182mω.cm。This kind of equipment is usually used as a secondary desalination equipment after reverse osmosis equipment, usually using EDI technology, which can combine reverse osmosis technology and ion exchange technology to achieve continuous electric regeneration, so as to ensure higher and higher pure water content. Generally, bipolar reverse osmosis + EDI can meet the standard, and some customers use single-stage reverse osmosis + EDI in order to save costs, is this feasible?
Can single-stage reverse osmosis directly add EDI module", today we will take a look at whether it is feasible?
If EDI needs to be added after single-stage reverse osmosis, the raw water quality needs to be quite good, that is, the produced water of single-stage reverse osmosis needs to meet the conditions of EDI inlet water, and the general water quality is two-stage reverse osmosis + EDI single-stage reverse osmosis membrane is mainly used to remove dissolved salts, organic matter, silica colloids, macromolecular substances and additives in pretreatment in water, directly +In the case of EDI, the primary reverse osmosis treatment load is large, and the quality of the produced water is poor, so EDI cannot be used, which will lead to EDI paralysis.
The EDI module is mainly used to improve the purity of the water and remove ions from the water. Therefore, single-stage reverse osmosis cannot be directly added to the EDI module. If the EDI module is required, it needs to be treated with bipolar reverse osmosis to obtain pure water, and then enter the EDI module for ion exchange to further improve the purity of the water.
The EDI module is an advanced water treatment equipment that uses electro-ion exchange technology to remove impurities and dissolved substances from the water and provide high purity water quality. A secondary reverse osmosis plant typically consists of two reverse osmosis membrane modules, each with its own high-pressure pump and control system. In the first stage of reverse osmosis, water passes through the first membrane module, removing most of the impurities and salts. Then, in the second stage of reverse osmosis, the water passes through a second membrane module, further removing the remaining impurities and salts. The secondary reverse osmosis equipment has the advantages of high desalination rate, high ** rate, low energy consumption and low maintenance cost, and the EDI module and the secondary reverse osmosis equipment complement each other to jointly complete the water purification task. First of all, the secondary reverse osmosis equipment removes most of the dissolved matter and microorganisms from the water, so that the water quality is greatly improved. The EDI module then further removes ionic impurities and dissolved organics from the water to ensure that the ionic concentration and purity of the water meet the standard requirements. Through this series of treatment steps, we can obtain a clear, odorless, safe and reliable water source. When these two types of equipment are used together, they can effectively improve the quality of water treatment and improve the purity of water.
The combination of EDI module and secondary reverse osmosis equipment can not only be widely used in the field of water treatment, such as electronic industry, electric power, medicine, chemical industry, pharmaceutical industry, etc., but also play a key role in other fields. For example, in industrial production, high-purity water is the basis of many processes, and the application of EDI modules and secondary reverse osmosis equipment can help companies save costs and improve product quality.
In short, the EDI module and the secondary reverse osmosis plant are a tacit pair, providing us with a clean, pure water source through complementary advantages. They play an important role in improving water quality, protecting the environment and promoting sustainable development. In the future, with the continuous progress of science and technology, we can expect these two types of equipment to be more widely used in the field of water treatment to create a better life for human beings. This equipment can achieve continuous and stable production and can meet the needs of a wide range of high-purity water.