RO Membrane Reverse Osmosis for Drinking Water Purification

Reverse Osmosis Membrane is the best choice for drinking water system suppliers, agents and users, with characteristics as follows: • Being safer—RO purified water is conformed to Drinking Water Safety Rules and USEPA Drinking Water Standard.
Product Details

RO membrane

Introduction:

The reverse osmosis membrane is an artificial semipermeable membrane made of a semi-permeable membrane that has certain characteristics and is a core component of reverse osmosis technology. The principle of reverse osmosis technology is to remove these substances and moisture according to the osmotic pressure of the solution, according to the fact that other substances cannot pass through the semipermeable membrane. The membrane pore size of the reverse osmosis membrane is very small, so that dissolved salts, colloids, microorganisms, organic matter, and the like in the water can be effectively removed. The system has the advantages of good water quality, low energy consumption, no pollution, simple process and easy operation.


Reverse Osmosis Membrane is the best choice for drinking water system suppliers, agents and users, with characteristics as follows:

• Being safer—RO purified water is conformed to Drinking Water Safety Rules and USEPA Drinking Water Standard.
• Better taste—RO membranes can move excess minerals and other organic compounds which make peculiar smell in the drinks.
• Being healthier—RO membranes can reject bacteria and virus to provide healthier water for drinking and cooking.


RO membrane model data sheet

Model

TW30-1812-50

TW30-1812-75

TW30-2012-100

TW30-2812-200

TW30-3012-300

Performance

Average rejection(%)

97.5

97.5

96

96

96

Permeate flux GPD (m3/d)

50(0.19)

75(0.28)

100(0.38)

200(0.76)

300(1.14)

Active area (ft2 m2)

3.5(0.32)

3.5(0.32)

4.8(0.45)

12(1.13)

16(1.5)

Test condition

Test pressure

60 psi (0.4Mpa)

Test temp.

25

NaCl Concentration (ppm)

250 ppm

PH

7.5

Recovery (%)

15

Operating limit

Max pressure

300 psi (21 bar)

Max feed flow rate

2 gpm

Max operating temp

45

Max SDI (inlet)

5

Free chlorine tolerance

< 0.1 ppm

PH range (continuous operaton)

3-10

PH range (chemical cleaning)

2-11


Application range:
Reverse osmosis membrane is widely used in electric power, petrochemical, steel, electronics, medicine, food and beverage, municipal and environmental protection, in seawater and brackish water desalination, boiler feed water, industrial pure water and electronic grade ultra-pure water preparation, drinking pure Water production, wastewater treatment and special separation processes play an important role.


Working principle:

A film that is selective for the substance that is transmitted is called a semi-permeable membrane. Generally, a film that can only pass through a solvent and cannot pass through a solute is called an ideal semipermeable membrane. When the same volume of dilute solution (such as fresh water) and concentrated solution (such as salt water) are placed on both sides of the semipermeable membrane, the solvent in the dilute solution will naturally pass through the semipermeable membrane and spontaneously flow to the side of the concentrated solution. This phenomenon is called infiltration. When the permeation reaches equilibrium, the liquid level on the concentrated solution side will be higher than the liquid level of the dilute solution, that is, a pressure difference is formed, and the pressure difference is the osmotic pressure. The magnitude of the osmotic pressure depends on the inherent nature of the solution, ie, on the species, concentration and temperature of the concentrated solution, regardless of the nature of the semipermeable membrane. If a pressure greater than the osmotic pressure is applied to the side of the concentrated solution, the flow direction of the solvent will be opposite to the original direction of permeation, and the flow from the concentrated solution to the side of the dilute solution begins. This process is called reverse osmosis. Reverse osmosis is a kind of reverse migration movement of permeation. It is a separation method that separates the solute in the solution from the solvent by the selective retention of the semipermeable membrane under pressure driving. It has been widely used in various liquids. Purification and concentration, the most common application example is the use of reverse osmosis technology to remove inorganic ions, bacteria, viruses, organic matter and colloids in raw water in the water treatment process to obtain high quality pure water.

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