1.Full automatic industrial Reverse Osmosis Introduction

Reverse osmosis (RO) is a multi-national research project of NASA. With the support of the government, it costs billions of dollars and has been researched for many years. It was originally used to recycle the living water of astronauts and make it drinkable again, so that the spacecraft does not have to carry a large amount of drinking water, so it is called space technology. The water it produces is also called "space water".

2.Technical parameters

3.Product detail

Original: Jiangsu, China

Certification: ISO9001, ISO14001, etc.

Material: SUS304

Voltage: 380V 50Hz, the voltage can be as local demand

Payment term: TT, LC

Packing: export standard

Market: Middle East/ Africa/Asia/South America/Europe/North America

Warranty: 1 year

MOQ: 1 set

4.Working principle

Reverse Osmosis generally includes pretreatment system, reverse osmosis device, post-processing system, cleaning system and electrical control system.

The pretreatment system usually includes raw water pump, dosing device, sand filter, activated carbon filter, precision filter and so on. Its main function is to reduce the pollution index of raw water and other impurities such as residual chlorine, so as to meet the requirements of reverse osmosis. The equipment configuration of the pretreatment system should be determined according to the specific conditions of raw water.

Reverse Osmosis Filter mainly includes multi-stage high pressure pump, reverse osmosis membrane element, diaphragm shell (pressure vessel), bracket and so on. Its main function is to remove impurities from the water and make the effluent meet the requirements.

In recent years, it develops very fast in our country. Reverse osmosis is to apply a pressure greater than the osmotic pressure to the solution, so that water can be separated from the solution through a special semi permeable membrane. This process is called reverse osmosis because it is the opposite of osmosis. According to the different osmotic pressure of various materials, the reverse osmosis method which is larger than the osmotic pressure can be used for a certain solution to achieve the purpose of separation, extraction, purification and concentration of the solution. It can remove the organic matters with small ion range and molecular weight in the filtrate, such as bacteria, virus, heat source, etc.

5.Working principle of reverse osmosis equipment

1). Penetration and osmotic pressure

Infiltration is common in nature. For example, if a cucumber is put into salt water, the cucumber will become smaller due to water loss. The process of cucumber water molecules entering into saline solution is the infiltration process. As shown in the figure below, if a water pool is separated into two parts by a membrane that only water molecules can penetrate, pure water and salt water are injected into both sides of the membrane to the same height. After a period of time, it can be found that the level of pure water has decreased, while the level of salt water has increased. The phenomenon that we transfer water molecules through this membrane into brine is called osmosis. Salt water level rise is not endless, to a certain height will reach a balance point. At this time, the pressure represented by the liquid level difference at both ends of the diaphragm is called osmotic pressure. The osmotic pressure is directly related to the concentration of brine.

2). Reverse osmosis phenomenon and reverse osmosis water purification technology

After the above device reaches equilibrium, if a certain pressure is applied to the liquid surface of the brine end, the water molecules will migrate from the brine end to the pure water end. The process of migration of liquid agent molecules from dilute solution to concentrated solution under pressure is called reverse osmosis. If salt water is added to one end of the above facilities and pressure is applied at that end beyond the osmotic pressure of the salt water, we can get pure water at the other end. This is the principle of RO water purification.

There are two keys to produce pure water in reverse osmosis facilities. One is a selective membrane, which we call semi permeable membrane, and the other is a certain pressure. In short, there are many pores on the reverse osmosis membrane. The size of these pores is the same as that of water molecules. Because bacteria, viruses, most organic pollutants and hydrated ions are much larger than water molecules, they cannot be separated from water through the reverse osmosis membrane. Among all kinds of impurities in water, soluble salts are the most difficult to remove. Therefore, the water purification effect of reverse osmosis is often determined according to the desalting rate. The desalting rate of reverse osmosis mainly depends on the selectivity of reverse osmosis semi permeable membrane. At present, the desalination rate of high selective reverse osmosis membrane element can be as high as 99.7%.

Reverse osmosis membrane and module of reverse osmosis equipment

At present, the reverse osmosis membrane of our company is divided into imported membrane and domestic membrane. The imported membrane includes Hydantoin,, Dow membrane, etc. It can remove impurities, various ions, molecules, organics, colloids, bacteria, viruses and heat sources in water with a removal rate of 95-99%. The desalination rate of RO membrane is more than 96%. Its form is roll type element. According to the principle of reverse osmosis, the semi permeable membrane, diversion layer and partition net are bound and rolled on the central pipe with drain holes. The raw water enters into the partition layer from one end of the element. When passing through the partition layer, under the pressure, part of the water penetrates into the diversion pipe through the semi permeable membrane, and can flow into the central pipe through the water channel of the diversion layer, The remaining part is discharged from the other end of the screen layer.

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