What is reverse osmosis?
The reverse osmosis device is an equipment to purify the saltine water with the action of pressure difference of semi permeable membrane. It is called reverse osmosis, as it is counter to natural penetration direction. Different materials have different osmotic pressures.
Reverse osmosis removes contaminants from unfiltered water, or feed water, when pressure forces it through a semipermeable membrane. Water flows from the more concentrated side (more contaminants) of the RO membrane to the less concentrated side (fewer contaminants) to provide clean drinking water. The fresh water produced is called the permeate. The concentrated water left over is called the waste or brine.
A semipermeable membrane has small pores that block contaminants but allow water molecules to flow through. In osmosis, water becomes more concentrated as it passes through the membrane to obtain equilibrium on both sides. Reverse osmosis, however, blocks contaminants from entering the less concentrated side of the membrane. For example, when pressure is applied to a volume of saltwater during reverse osmosis, the salt is left behind and only clean water flows through.

Working principle
Reverse osmosis is referred to as RO, which is under external pressure,the solution of some components in the selective permeation,so as to realize the purpose of desalination, purification and enrichment separation.when it is used in water treatment equipment,it can remove most ions in water,and also the fine particles, bacteriaand organic impurities.it is the water treatment equipment of advanced, economic means.Reverse osmosis is use of high pressure pump continuously to the high salt content water pressure delivered to the RO device,ROdevice comprises a reverse osmosis membrane element and the pressure vessel,input water is divided into low penetration of salt solution and salty liquid.Water enters the concentrated liquid and liquid permeability ratio by regulating valve to control.

Product Description

Yellow means mistake and Red ones mean compeletly stop. You also can tell us you want to how to control the sytem, we also can customize.


It is generally used in quartz sand filter, activated carbon filter, ion exchanger behind or ultra filtration, nano filtration, reverse osmosis device in front, on the one hand, is to further deal with the fine impurities in the water, on the other hand, to prevent the previous process of broken quartz sand, activated carbon, ion exchange through the water distributor to the next process.
It is an important component of reverse osmosis water treatment equipment, using its characteristics and advantages, in reverse osmosis water treatment equipment main role is: through a very large pressure so that the water through the reverse osmosis membrane, to reverse osmosis membrane (RO) transport some of the flow and pressure of water, to ensure the smooth operation of the reverse osmosis system.


RO membrane pore size of reverse osmosis membrane is very small, so it can effectively remove dissolved salts, colloid, microorganisms, organic matter, etc. It has the advantages of low energy consumption, no pollution, simple process and easy operation.
We have FRP and stainless steel membrane housing for RO membrane, we can choose different material housing according to our customers requirements.


Product Package

Company Information
We Ewater are Water treatment product and service provider, located in Yixing, Wuxi China, which gathers 6 0 0 manufacturers of environment protection products, famous in China as "City of Environment Protection Products".
We help customers to select and purchase the high quality and cost-effective products among hundreds of thousands of manufacturers in water treatment field in China. We have one hundred suppliers as our partners, specially, there are hundreds of companies specialized in water treatment are located in the same area as our company located.
We have sister company "Jieming International Trading" in Dubai, U A E, provide water treatment products and services for Middle East countries since 2 0 0 5.
Our many years experience and professional team in water treatment field give us the advantages such as:
Helping buyers to choose very suitable products among so many manufacturers;
We accept customized orders based on their needs, whatever the quantity or model is;
We offer fast delivery upon customers' requests by all means, such as air freight, courier with an affordable cost;
We provide one-stop service for product sourcing, purchase, export, delivery, warranty after sales, all in one stop, reliably and efficiently.
In the past 4 years, we have supplied and serviced hundreds of clients in 8 0 countries all over the world.
Our mission is:
Empower our customers buying water treatment products from China as easy as buying from their hometown.
Q1.Are you a factory or trading company?
A1:We are a professional water treatment equipment and accessories manufacturing factory that set up for over 10 years. We always pay attention to the development of the industry!We can give a discount according to the quantity of the machine you purchase.
B1:At the same time,we take effective measures to control the production process for ensuring the quality of products. Our products are certified.And we can supply SGS,ISO9001,CE certification.
Q2.What products does your company offer by yourself?
A3:We are specialized in reverse osmosis equipment,ultra filtration equipment,EDI electric desalination system,sea water
desalination system,water treatment spares,water treatment accessories etc.
Q3.How can I know your machine works well?
A4:Before delivery,we shall test the machine working condition for you.
Q4.What's the information you need to know before order?
A1:What's your raw water?
B1:What's the capacity per hour of the equipment?
C1:What's the application of purifier water?
D1:Do you have raw water quality test report?What's your raw water TDS and hardness?
E1:What is the power supply?(Such as 380V/50HZ,220V/50HZ etc;)