DowFILMTEC™Membrane element

　　DowFILMTEC™BW30-400IGIndustrial-grade, brackish water desalination reverse osmosis membrane elements

　　DowFILMTEC™Industrial gradeBW30-400IGBrackish water desalination reverse osmosis membrane elements are applied in the field of industrial water treatment.

　　It is equipped with the industry's leading water inlet separator34milTo reduce the impact of dirtBW30-400IGComponents can be relatively widePHWithin the rangePH1-13Carry out cleaning.

　　DowFILMTEC™Industrial gradeBW30-400IGBrackish water desalination reverse osmosis membrane elements are applied in the field of industrial water treatment. It maintains andBW30-400Membrane elements offer the same flow rate and desalination performance, thus providing a more cost-effective option for industrial-grade applications.

　　Since DowFILMTECTMSince the company was the first in the world to invent practical composite films, films and their application technologies have witnessed significant development. Many fields of exploration and large-scale applications began with the use of Dow membrane elements.FILMTECTMThe reverse osmosis and nanofiltration membrane products of the brand are recognized as high-performance and stable separation membrane brands.

DowBW30-400IGReverse osmosis membrane

　　DowBW30-400 IGIt's Dow.FILMTECNewly launched into the market8040One of the series of membrane elements, original from Dow, USAroMembranes are used to meet the high water quality requirements of commercial customer systems. This membrane features anti-pollution, high desalination and high water production.

I.Dow, USAROMembrane functional features

　　Dow(FILMTEC)The membrane elements are only produced in the United States and are imported in their original form. The products are manufactured on an automated production line with advanced technology. There are no patches on the membrane sheets. The desalination layer is thicker and can be strongly cleaned with inorganic acids and alkalis. It is fully automatic The component assembly technology ensures that the finished products do not require water testing, truly guaranteeing consistent global supply quality. Membrane elements are widely used in power, petrochemical, steel, electronics, medicine, beverages, municipal and environmental protection fields, in seawater It plays a significant role in the desalination of brackish water, the preparation of boiler feed water, industrial pure water and electronic-grade ultrapure water, the production of drinking purified water, wastewater treatment and special separation processes.

　　BW30-400IGMembrane elementThe water production under standard test conditions is40Tons of/On this day, it increases water production by expanding the membrane area rather than by membrane flux and feed water pressure, thus maintaining a very low fouling rate, thereby sustaining long-term high water production and prolonging the service life of membrane elements. This component operates at a low pressure, enhancing the economic efficiency of the system's operation.

　　Diaphragm typePolyamide composite film

　　Effective membrane area400ft2/37m2

　　Inlet flow channel width28mil

　　Water production capacity10500gpd/40m3/d

　　Desalination rate99.5CI-%

　　The water production capacity and desalination rate are based on the test conditionsWater temperature250C,PHvalue8Recovery rate15%And the pressure listed above, the test concentration is2000ppmNacl,225psi(15.5bar)

Ii.Overall dimensions

　　1. Typical recovery rate is for a single component. The recovery rate refers to the percentage value of the product water flow rate divided by the feed water flow rate.

　　2. Please refer to this when designing a multi-component systemFILMTECFollow the design guidelines and adhere to the corresponding recovery rate limits based on the type of feed water.

　　3. The nominal inner diameter of this component is8.00Inches203mmA pressure vessel.

Iii.Important Information

　　When the membrane system is ready to be put into operation, in order to prevent overflow of feed water or hydraulic shock from affecting the membrane elements It is very necessary to start the reverse osmosis water treatment system correctly. Following the correct startup sequence helps ensure that the system operation parameters comply with the design specifications, thereby enabling the water quality and quantity of the system to reach the predetermined design goals. In the membrane system Before the initial startup of the system, the pre-treatment system debugging of the membrane system, the filling of membrane elements, the calibration of instruments and other system checks should be completed.

Iv. Operating Guide

　　During startup, shutdown, cleaning or other processes, to prevent potential membrane damage, any sudden pressure or cross-flow rate changes in the wound element should be avoided. During the startup process, we recommend gradually transitioning from a static state to a running state following the process below;

V. General Information

　　The water supply pressure should be at30-60It gradually increases within the time range of seconds. Increase the design of the wrong current The flow rate value should be within15-20Gradually arrive within seconds. The product water within an hour should be drained and not used. Once a component is moistened, it should always remain moist. If the user does not strictly follow the operating limits and guidelines set in this specification Then, the limited warranty will expire. When the system is shut down for a long time, to prevent the growth of microorganisms, it is recommended to immerse the membrane elements in the protective solution. The standard preservation solution contains1.5%Sodium bisulfite (grade) by weight. Users should Be responsible for the impact on components caused by the use of incompatible chemicals and lubricants. The allowable pressure drop of a pressure vessel is50psi(3.4bar)At all times, back pressure on the water side of the product should be avoided.