ETC membrane is used to remove dissolved carbon dioxide in
water. Product water carbon dioxide content can be decreased to 0.5ppm.

membrane contactor is a kind of special hydrophobic
hollow fiber array made of polymer material. Then the array is spiral-wounded
onto a water distribution tube, and then the tube is installed into a housing
(at the same time, a baffler is formulated inside the housing).





















    

    

    



Hollow fiber → Knitted fiber (under microscope) →
Knitted fiber (naked eyes) → End surface

 

Structure of
membrane contactor:

  





 

Features of
membrane contactor:

1) Hollow
fibers are knitted into an array, so that a certain space can be kept between
these fibers. In this way, thousands of fibers are connected as a whole array
which can resist strong water flow and will not break. Besides, the mass
transfer efficiency can be improved in the array structure.

2) High fiber
density makes it possible of ultimate gas removal from water;

3) Central
tube water distribution + Middle baffler structure, change the water flow
direction to flush vertically towards hollow fibers, which can improve the mass
transfer efficiency between shell side and lumen side.

 

CO2 removal from water is a
necessary process in many industries. Dissolved CO2 in feed
water of EDI/CDI and ion exchange column should be removed. Using membrane
contactor to remove dissolved CO2 is an easy method without
chemical dosing and frequent chemical regeneration, because it is a 100%
physical process. At the same time, operation cost is saved and it is more
friendly to environment.

Traditional CO2 removal technology
is “alkali dosing + 2nd RO” process, while using membrane
contactor includes only one step: CO2 is taken out by vacuum
pump and sweep gas.

It has the
following advantages compared with “alkali dosing + 2nd RO”
process:




Process


UF+RO+ETC+EDI


UF+RO+RO+EDI




EDI capacity


300m3/h


300 m3/h




Water recovery


70.80%


67.56%




Annual water consumption


3661856 m3


 3836507 m3




Annual water consumption difference


Saving 174651m3


---




Annual power consumption


4.49 million KWH


6.89 million KWH




Annual power consumption difference


Saving 2.4million KWH


---




Equipment investment


2.33 million USD


3.17 million USD




Equipment investment difference


Saving 0.83 million USD


---




Specifications
of  ETC membrane contactor:




Item


Parameters




Model


ETC-6×28


ETC-10×28




Application


CO2 removal
from pure water




Flux


1~8m3/h


8~25m3/h




Fiber
material


Polypropylene




Dimensions


Ø6×28 inch


Ø10×28 inch




Liquid/gas
contact area


45m2


120m2




Inner/outer
diameter of fiber


0.2/0.3mm




Housing
material


UPVC




PH
resistance range


1~13




Working
temperature


5~60℃




Max
inlet water pressure


6.0bar




Connect
pipe size


DN32
/ DN20


DN40
/ DN20


Contact:Tel:+86 592 6514970Skype:18060902001WhatsApp:18060902001WeChat:18060902001TM: guochukejiQQ:1641011431

ETC membrane is used to remove dissolved carbon dioxide in water. Product water carbon dioxide content can be decreased to 0.5ppm.membrane contactor is a kind of special hydrophobic hollow fiber array made of polymer material. Then the array is spiral-wounded onto a water distribution tube, and then the tube is installed into a housing (at the same time, a baffler is formulated inside the housing).              Hollow fiber → Knitted fiber (under microscope) → Knitted fiber (naked eyes) → End surface Structure of membrane contactor:   Features of membrane contactor:1) Hollow fibers are knitted into an array, so that a certain space can be kept between these fibers. In this way, thousands of fibers are connected as a whole array which can resist strong water flow and will not break. Besides, the mass transfer efficiency can be improved in the array structure.2) High fiber density makes it possible of ultimate gas removal from water;3) Central tube water distribution + Middle baffler structure, change the water flow direction to flush vertically towards hollow fibers, which can improve the mass transfer efficiency between shell side and lumen side. CO2 removal from water is a necessary process in many industries. Dissolved CO2 in feed water of EDI/CDI and ion exchange column should be removed. Using membrane contactor to remove dissolved CO2 is an easy method without chemical dosing and frequent chemical regeneration, because it is a 100% physical process. At the same time, operation cost is saved and it is more friendly to environment.Traditional CO2 removal technology is “alkali dosing + 2nd RO” process, while using membrane contactor includes only one step: CO2 is taken out by vacuum pump and sweep gas.It has the following advantages compared with “alkali dosing + 2nd RO” process:ProcessUF+RO+ETC+EDIUF+RO+RO+EDIEDI capacity300m3/h300 m3/hWater recovery70.80%67.56%Annual water consumption3661856 m3 3836507 m3Annual water consumption differenceSaving 174651m3---Annual power consumption4.49 million KWH6.89 million KWHAnnual power consumption differenceSaving 2.4million KWH---Equipment investment2.33 million USD3.17 million USDEquipment investment differenceSaving 0.83 million USD---Specifications of  ETC membrane contactor:ItemParametersModelETC-6×28ETC-10×28ApplicationCO2 removal from pure waterFlux1~8m3/h8~25m3/hFiber materialPolypropyleneDimensionsØ6×28 inchØ10×28 inchLiquid/gas contact area45m2120m2Inner/outer diameter of fiber0.2/0.3mmHousing materialUPVCPH resistance range1~13Working temperature5~60℃Max inlet water pressure6.0barConnect pipe sizeDN32 / DN20DN40 / DN20Contact:Tel:+86 592 6514970Skype:18060902001WhatsApp:18060902001WeChat:18060902001TM: guochukejiQQ:1641011431