commercial RO membrane component

　　Dow BW30HRLE-4040 commercial RO membrane component

　　Dow FILTEC brackish membrane component provides brackish light industrial water treatment system with reliable, stable and outstanding system performance.

　　The performance of Dow BW30-4040 is accepted as the most stable RO membrane component, and the output quality is recognized as the highest standard in the reverse osmosis membrane industry.

　　Membrane component winded by glass fiber reinforced plastic steel is suitable for every pressure container with over 3 membrane components in series, which can bear the higher operation pressure drop.

　　I. Brief introduction

　　RO membrane is a kind of reverse migration movement of osmosis, driven by the pressure, with the help of selective interception of semi-permeable membrane, separate the solvend and solvent in the solution, the aperture is about 5-10A, which can be widely used in purification, concentration of various liquids, thereinto, the most common application case is the water treatment technology, we use reverse osmosis technology to remove the impurities, such as organic ions, bacteria, viruses, organic substances and colloids and so on, and then we can get high quality pure water. At present, the widest application is rolling polyamide compound membrane, the water flux and removal ability will be affected by temperature, pressure, recovery rate, salt content of feedwater and PH value. The application of reverse osmosis (membrane separation) technology has made the pure water preparation get rid of traditional cation ion exchanger, anion ion exchanger, compound ion exchanger, the electrodeionization technology has been popularized overseas for recent years, which is the revolution of pure water production, and therefore, there is no need of chemical agents regeneration, but we can get the 18M pure water machine, which can be used in semi-conductor and integration electric appliances and so on.

　　II. Product specifications

　　1. Design multi-component system, read FilmTec design guide. 1 inch = 25.4mm

　　2. BW30-4040 component is equipped with 4.0 inch pressure container with nominal bore diameter.

　　Operation limit value

　　membrane type................…………………………………………polyamide compound membrane

　　Maximum operation temperature………………… … ………..........................…… ……… 45 o C

　　Maximum operation pressure……………….............................…………………… 600psi (41bar)

　　Maximum feedwater flow.....................…….......……… …… 2.5 inch component 6gpm (1.4m3/h)

　　4.0 inch component 14gpm (3.2m3/h)

　　Maximum pressure drop...............................……………… ………… ………… … 13psi (0.9bar)

　　PH range of continuous operation a ………...….......................………………….......…… 2 - 11

　　PH value of short-time cleaning(30 min ) b ……........................…………… …………… 1 - 12

　　Maximum water supply Silting Density Index..............…………………… … … ………… SDI 5

　　Free chlorine content c …………………… ……...............................…… … … ……… < 0.1ppm

　　PH of a is more than 10, the maximum temperature of continuous operation is 35℃(95oF); c under some conditions, there are free chlorine and other oxidizing agents in feedwater, which will destroy the membrane performances seriously, and the oxidation destroy is not belonging to the product quality warranty terms, FilmTec suggests that the residual and free chlorine should be removed in the pretreatment.

　　III. Application scopes:

　　Dow membrane has been widely used in electricity, petrol chemical, iron and stell, electronics, pharmacy, food and beverage, municipal and environmental protection, which also has played an very important role in sea water and brackish water desalinization, boiler water supply, preparations of industrial pure water and electronic grade ultrapure water, production of drinking pure water, sewage treatment and special separation and so on.