Ultrafiltration System

Raindrops UF System:
 

RWO offers a wide range of UF systems as the requirements of the client; we design these systems for various applications like RO pre-treatment, drinking water, STP, ETP and customized requirements as well.

 
Ultrafiltration Means:
Ultrafiltration is system where in a separation process is done using membranes with pore sizes in the range of 0.1 to 0.001 micron. Generally, ultrafiltration removes high molecular weight matters, colloidal constituents, organic and inorganic polymeric fragments. Low molecular weight organics and ions such as calcium, magnesium chloride, sodium and sulfate are not detached. Since only high molecular weight sorts are subtracted, the osmotic pressure differential across the membrane surface is unimportant. Low applied pressures are therefore enough to achieve high flux rates from an ultrafiltration membrane. Flux of a membrane is defined as the amount of permeate created per unit area of membrane surface per unit time.
 
Typically flux is expressed as cubic meters per square meters per day or as gallons per square foot per day (GFD). 

 

 

 

Ultrafiltration membranes can have tremendously high fluxes but in most practical applications the flux varies between 50 and 200 GFD at an operating pressure of about 50 psig in contrast, reverse osmosis membranes only produce between 10 to 30 GFD at 200 to 400 psig.
 
 
Ultra-filter vs. Conventional Filter:
 
Ultrafiltration is like reverse osmosis where in cross-flow separation process is done. A liquid stream which is to be treated flows tangentially along the membrane surface, thereby producing two streams. The stream of liquid that flows through the membrane are called permeates. The amount and types of species left in the permeate depends on the characteristic of the membrane, the operating conditions and the quality of feed. The other liquid stream is called as concentrate and it gets progressively concentrated in those species removed by the membrane. In cross-flow separation, therefore, the membrane itself does not act as a collector of ions, molecules, or colloids but merely as a barrier to these species.
 
 

Conventional filters such as cartridge filters or media filters, on the other hand, only remove suspended solids by trapping these in the pores of the filter-media.These filters then act as reservoirs of suspended solids and have to be cleaned or replaced frequently. Conventional filters are used upstream from the membrane system to eliminate relatively large suspended solids and to let the membrane do the job of removing fine particles and dissolved solids. In ultrafiltration, for many applications, no pre-filters are used and ultrafiltration modules concentrate all of the suspended and emulsified materials.

 
Factors Affecting the Performance of Ultrafiltration: 
 

Below are given several factors that may affect the performance of an ultrafiltration system.

Flow across the Membrane Surface: The permeate rate increases with the flow velocity of the liquid across the membrane surface. Flow velocity if especially critical for liquids containing emulsions or suspensions. Higher flow also means higher energy consumption and larger pumps. Increasing the flow velocity also reduces the fouling of the membrane surface. Generally, an optimum flow velocity is arrived at by a compromise between the pump horsepower and increase in permeate rate.

Operating Pressure: Permeate rate is directly proportional to the applied pressure across the membrane surface. Nonetheless, due to increased fouling and compaction, the operating pressures rarely exceed 100 psig and are generally around 50 psig. In some of the capillary-type ultrafiltration membrane modules the operating pressures are even lower due to the physical strength limitation imposed by the membrane module.

Operating Temperature: Permeate rates escalates with increasing temperature. However, temperature generally is not a controlled variable. It is important to know the effect of temperature on membrane flux in order to distinguish between a drop in the permeate due to a drop in the temperature and the effect of other parameters.

 
  • aims - Ahmedabad Institute of Medical Services
    Mis. Raindrops Water Technologies, Ahmedabad has supplied RO Plant (Capacity: 250 LPH and 500 LPH) with reference purchase order NO.AIMS/P02011/45 dated 27.12.2011 . The RO Plant was supplied as per time Schedule and successfully completed erection and commissioning activity. We certified that The RO Plant are running as per design parameter till date. RO Plant working is at satisfactory level. We appreciate Raindrops Water Technologies services and quality of supplied plant. We wish all the best for future projects
  • Anar Rubber Works
    M/ s. Raindrops Water Technologies, Ahmedabad has supplied RO Plant (Capacity: 500 LPH) with reference purchase order No- RO Plant 500 LPH i 02-06-2010. The RO Plant was supplied as per time Schedule and successfully completed erection and commissioning activity. We certified that The RO Plant is running as per design parameter till date. RO Plant working is at satisfactory level. We appreciate Raindrops Water Technologies services and quality of supplied plant. We wish all the best for future projects
  • Balaji Waterjet Cutting Services
    We herewith confirm that Mis. Raindrops Water Technologies, Ahmedabad has supplied 500 LPH RO Plant with reference P.O. No. SWMTIROSOO, dated 10/09/2011. The Supplied RO Plant is as per design data. We also confirm that The RO Plant working is at satisfactory level. We are happy to for Raindrops Water Technologies' services and quality of supplied plant.
  • Hari Tapes Pvt Ltd
    This is to certify that softening plant capacity: 2500 LPH supplied by Raindropes Water Technologies on 5/2/2014 is running properly till date & we are satisfied with their services.
  • Kalyani Enterprise
    MIs. Raindrops Water Technologies, Ahmedabad has supplied RO Plant (Capacity: 3000 LPH) with reference purchase order No.KE / CI / UG /14 /2010 11 dated 25-03-2011 . The RO Plant was supplied as per time Schedule. WE HAVE EXPORTED THIS PLANT TO MIS COUGAR INDUSTRIES (U ) LTD, PO BOX 9752 .KAMPALA UGANDA As per our client We certified that The RO Plant is running as per design parameter till date. RO Plant working is at satisfactory level. We appreciate Quality Work of MIs. Raindrops Water Technologies of supplied plant.
  • Kalyani Enterprise
    Mis. Raindrops Water Technologies, Ahmedabad has supplied RO Plant (Capacity : 1000 LPH) with reference purchase order No.KEL IRWS 115 lUG 12009-10 dated 13-01-2010 . The RO Plant was supplied as per time Schedule. WE HAVE EXPORTED THIS PLANT TO MIS SEMLIKI DAIRY & BEVARAGES ( U) LTD, PO BOX 1544, KAMWENGE, UGANDA As per our client We certified that The RO Plant is running as per design parameter till date. RO Plant working is at satisfactory level. We appreciate Quality Work of MIs. Raindrops Water Technologies of supplied plant.
  • M S Khurana Engineering Limited
    MIs. Raindrops Water Technologies, Ahmedabad has supplied RO Plant (Capacity: 1000 LPH 5 Nos) with reference purchase order NO.MSKlRAINDROPS/RO/50710 dated 05.07.2010 and MSKlRWT/PMC/10-11/1259, Dated 17.11 .2010. The RO Plant was supplied as per time Schedule and successfully completed erection and commissioning activity. We certified that The RO Plant are running as per design parameter till date. RO Plant working is at satisfactory level. We appreciate Raindrops Water Technologies services and quality of supplied plant. We wish all the best for future projects
  • PR and Sons - Arvee Laboratries
    MIs. Raindrops Water Technologies, Ahmedabad has supplied Water Treatment plant OF 3000 Iph ro + dm with (PR5/2212/12-13 DT 22-12-2013). The RO Plant was supplied as per time Schedule and successfully completed erection and commissioning activity. The ro was supplied @ Arvee Laboratories Bhavnagar for Formulation process We certified that The RO Plant is running as per design parameter till date. We appreciate Raindrops Water Technologies services and quality of supplied plant. We wish all the best for future projects.
  • PR and Sons - Mehta Jaising
    Mis .. Raindrops Water Technologies, Ahmedabad has supplied Water Treatment plant OF 3000 LPH with (PRS/1003/12 13 DT 10-3--2013). The RO Plant was supplied as per time Schedule and successfully completed erection and commissioning activity. The ro was supplied @ Mumbai to Mehta Jaising & Co. for Construction purpose We certified that The RO Plant is running as per design parameter till date. We appreciate Raindrops Water Technologies services and quality of supplied plant. We wish all the best for future projects.
  • PR and Sons - Nutan General Hospital
    MIs. Raindrops Water Technologies, Ahmedabad has supplied Water Treatment plant OF 1000 Iph ro + dm + u v with (PRS/242/1011 DT 24-2-2010). The HO Plant was supplied as per time Schedule and successfully completed erection and commissioning activity. The ro was supplied @ Nutan General Hospital Visnagar for Dialysis purpose We certified that The RO Plant is running as per design parameter till date. We appreciate Raindrops Water Technologies services and quality of supplied plant. We wish all the best for future projects.
  • PR and Sons - Sheth VS Hospital
    Mis. Raindrops Water Technologies, Ahmedabad has supplied Water Treatment plant OF 500 Iph ro + uv + dm with (PRS/403/10-11 DT 04-3-2011). The RO Plant was supplied as per time Schedule and successfully completed erection and commissioning activity. The ro was supplied @ Sheth Vadilal Sarabhai General Hospital @ ahmedabad for Dialysis Purpose We certified that The RO Plant is running as per design parameter till date. We appreciate Raindrops Water Technologies services and quality of supplied plant. We wish all the best for future projects
  • PR and Sons - Sun Packing Gandhidham
    MIs. Raindrops Water Technologies, Ahmedabad has supplied Water Treatment plant OF 2000 Iph ro with (PR5/065/11-12 DT 6-5-2011). The RO Plant was supplied as per time Schedule and successfully completed erection and commissioning activity. The ro was supplied @ sun packaging gandhidham for Factory usage We certified that The RO Plant is running as per design parameter till date. We appreciate Raindrops Water Technologies services and quality of supplied plant. We wish all the best for future projects.
  • RK Label Printing Machinery
    MIs. Raindrt>ps Water Technologies, Ahmedabad has supplied RO Plant ยท . (Capacity: 500 LPH) with reference purchase Qrder No RO Plant 500 LPH .. . I 02-09-2010. The RO Plant was supplied as per time Schedule and . successfully completed erection and commissioning activity. We certified that The RO Plant is running as per design parameter till date. RO Plant working is at satisfactory level. We appreciate Raindrops Water Technologies serVices and quality of supplied plant. We Wish all the best for future projects.
  • Shivam Aqua - Kiz Foods Ltd
    Mis. Raindrops Water Technologies, Ahmedabad has supplied 2000 LPH RO Plant with reference purchase order No.SAlRWT2000RO dated 13/08/2010. The RO Plant was supplied as per time Schedule... As per our client Kiz Foods Ltd., Mahuva, Bhavnagar- We certified that The RO Plant is running as per design parameter till date. RO Plant working is at satisfactory level. We appreciate Quality Work of Mis. Raindrops Water Technologies of supplied plant. We wish all the best for future projects.
  • Shivam Aqua - Natural Frozen
    MIs. Raindrops Water Technologies, Ahmedabad has supplied 5000 LPH RO Plant with reference purchase order NO.SAlRWT5000RO dated 16/11/2010. The RO Plant was supplied as per time Schedule." As per our client Natural Frozen Foods, Mahuva, Bhavnagar, We certified that The RO Plant is running as per design parameter till date. RO Plant working is at satisfactory level. We appreciate Quality Work of MIs. Raindrops Water Technologies of supplied plant. We wish all the best for future projects.
  • TLT Engineering India Pvt Ltd
    We hereby confirm that Raindrops Water Technologies, Ahmedabad has supplied 500 LPH RO Plant vide our P.O. No. 08/000000/20110689 dated 05/04/2011. The Supplied RO Plant is as per design data.We also confirm that the RO Plant is working satisfactorily. We are satisfied with Raindrops Water Technologies' services and quality of supplied plant.