W30-400IGThe water production capacity of the membrane element 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 type:Polyamide composite film

Effective membrane area:400ft2/37m2

The width of the inlet flow channel:28mil

Water production volume:10500gpd/40m3/d

Desalination rate:99.5CI-%

The water production capacity and desalination rate are based on the test conditions

Water temperature250C,

PHvalue8,

Recovery rate15%And the pressures listed above

The test concentration is2000ppmNacl,225psi(15.5bar)

Operating limit

High operating temperature:1130F(450C)

High operating pressure:600psig(41bar)

High voltage drop:15psig(1.0bar)

PHRange, continuous operationa:2-10

PHScope, short-term cleaning30Minutesb:1-13

Large inlet flow rate:85gpm(19m3/hr)

Large water supplySDI15:5

Allowable free chlorine contentC:<01.ppm

a PH>10The maximum allowable temperature for continuous operation950F(350C)

cUnder certain conditions, the presence of free chlorine and other oxidants can cause the membrane to degrade and be damaged prematurely. As oxidation damage is beyond the warranty range of Dow membranes, it is recommended that users remove the residual free chlorine through pretreatment before it comes into contact with the membrane.

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.

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;

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 maximum 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.