[Dow RO Membrane]Dow RO Membrane BW30-365IG

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Shanghai Kuosi Electronic Co., Ltd.

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FILMTECTM BW30-365IG Brackish water desalination reverse osmosis element RO membrane

[Dow RO membrane] Dow reverse osmosis membrane BW30-365IG performance characteristics

The FILMTECTM BW30-365IG membrane element has a nominal effective membrane area of 365 square feet and a water output of 36m3/d (9500gpd ) under standard test conditions.

Its outer diameter is the same as other standard 8-inch elements.

BW30-365IG does not increase the membrane flux and operating pressure but increases the water production by increasing the membrane area, so it can maintain a very low fouling rate, thus maintaining long-term high water production and prolonging the life of membrane elements.

At the same time, its operating pressure is low, which improves the economy of system operation.

The high effective area of the BW30-365IG enables newly designed RO systems to use fewer components, making the system compact and saving installation costs.

When retrofitting old systems, BW30-365IG can reduce the operating pressure of the system, reduce the fouling of components, and prolong the life of components. When this component is replaced, the water production volume of the original system can be increased without expansion; or the original water production volume can be maintained and the overall size of the device can be reduced.

【Dow RO Membrane】Dow RO Membrane BW30-365IG Product Specifications

1. The above test values are based on the following test conditions: 2000ppm NaCl, 225psi (1.53bar), 77°F (25oC), pH8, 15% recovery.

2. Flow rates of individual elements may vary, but will not be more than 15% below the listed value.

3. Product specifications may change slightly when product quality improves.

4. The effective membrane area will be within plus or minus 3% of the value given. Filmtec's method of calculating the effective membrane area is different from other manufacturers. For details, please refer to the number 609-00434.

【Dow RO membrane】Dow reverse osmosis membrane BW30-365IG

1. The typical recovery rate is for a single membrane element, and the recovery rate refers to the percentage value of the product water flow divided by the feed water flow.

2. Please refer to FilmTec's design guidelines when designing a multi-element system, and follow the corresponding recovery limits based on the type of feedwater.

3. This element fits a pressure vessel with a nominal 8.00-inch (203mm) ID.

[Dow RO membrane] Dow reverse osmosis membrane BW30-365IG operating limit

a When pH>10, the high temperature of continuous operation is 95oF (35oC);

b See Cleaning Guidelines in Document No. 609-23010;

c Under certain conditions, the presence of free chlorine and other oxidizing agents can lead to premature membrane failure.

Since oxidative damage is beyond the warranty coverage of Dow membranes, Dow Chemical Company recommends that users pre-treat residual free oxygen prior to contacting the membrane. For more information, see Technical Bulletin: 609-22010.

【Dow RO Membrane】Important information of Dow reverse osmosis membrane BW30-365IG

When the membrane system is ready to be put into operation, it is very important to start the reverse osmosis system correctly in order to prevent the membrane element from being damaged by excessive feed water flow or hydraulic shock. Following the correct start-up procedure can ensure that the operating parameters of the system meet the design specifications, so that the quality and quantity of the effluent from the system can reach the established design goals.

Before the initial startup of the membrane system, the pretreatment and debugging of the membrane system, the filling of membrane elements, instrument calibration, and other system tests should be completed.

For more information, please refer to the additional application note (document number: 609-02077).

[Dow RO Membrane] Dow Reverse Osmosis Membrane BW30-365IG Operation Guide

To prevent potential membrane damage during start-up, shutdown, cleaning, or other processes, avoid any sudden pressure or cross-flow flow changes on the rolling element.

During the start-up process, we recommend that the following process be followed from the standstill state to the operational state:

1. The feed water pressure should gradually increase over a 30-60 second time frame.

2. The design cross-flow velocity value should be reached gradually within 15-20 seconds.

3. The product water within an hour should be drained away.

【Dow RO Membrane】General Information of Dow Reverse Osmosis Membrane BW30-365IG

1. Once the component is wet, it should remain wet at all times.

2. The limited warranty will be void if the user does not strictly follow the operating limits and guidelines set forth in this specification.

3. When the system is shut down for a long time, in order to prevent the growth of microorganisms, we recommend that the membrane elements be immersed in the preservation solution. The standard preservation solution contains 1.5% by weight sodium bisulfite (food grade).

4. The user is responsible for the effects on components caused by the use of incompatible chemicals and lubricants.

5. The allowable maximum pressure drop for a single pressure vessel is 50psi (3.4bar).

6. Avoid back pressure on the water side of the product at all times.

BW30-365IG reverse osmosis membrane is an eight-inch reverse osmosis membrane introduced by this company.

The stable salt rejection rate of the BW30-365IG reverse osmosis membrane is 99.5%, and the small salt rejection rate of the BW30-365IG reverse osmosis membrane is 99.0%.

Under the conditions, the theoretical value of water production of BW30-365IG reverse osmosis membrane is 1.5 tons/hour. We wholesale BW30-365IG reverse osmosis membrane, as well as BW30-400 reverse osmosis membrane, BW30-4040 reverse osmosis membrane, and anti-fouling membrane and desalination membrane. As a wholesaler of BW30-365IG reverse osmosis membrane, our price is very competitive, we can also provide a technical manual of this membrane, membrane cleaning service, membrane replacement service, membrane installation and commissioning service, membrane training service, etc.

BW30-365IG reverse osmosis membrane is a high-pressure brackish water membrane, so it is necessary to choose a high-pressure pump that matches it in the selection of the pump.

BW30-365IG reverse osmosis membrane has a long service life, but it also requires certain water inlet conditions, especially in the selection of pretreatment and antiscalants, it should be noted that if the pretreatment is not done well, it will cause pollution to the reverse osmosis membrane. Pollution, not only can not achieve the effect of protecting the reverse osmosis membrane but will produce colloids to block the pore size of the reverse osmosis membrane.

This will eventually lead to a decrease in water production, an increase in conductivity, and an increase in differential pressure.

Therefore, choosing a good scale inhibitor can not only prolong the life of the reverse osmosis membrane but also save the cost of replacing the reverse osmosis membrane.

                                                            Effective membrane area ft2 (m2)
                                                            365 (34)
                                                        
                                                            Water production gpd (m3/d)
                                                            9500 (36)
                                                        
                                                            Stable desalination rate Cl-%
                                                            99.5
                                                        
                                                            Small salt rejection %
                                                            99.0
                                                        
                                                            Single component recovery %
                                                            15