Mon Agora – Blog La parole est à moi
FLUSHING RO SYSTEM During flush, pump is off. Feed water is around 60 psi, permeate divert solenoid valve is closed, but diverted permeate pressure that is around 30 psi (less than inlet pressure) cannot enter in feed flush because inlet water pressure is too high. So permeate in note recycled. During production, when diverted permeate ... Read More »
Tag Archives: membrane
Low Energy Membranes
July 29, 2016
Very good article of Bill Loyd in Watertechonline Taking advantage of low pressure membranes in commercial systems Note that AXEON Water Technologies has developped an extra low Energy RO membranes that are supposed to operate at pressure of 80 psi. I haven’t tried them yet, but this is an interesting innovation. Info here. These types ... Read More »
Performances of some Filmtec membranes
May 14, 2016
NOTES FROM DIFFERENT SOURCES AND PERSONAL Performance of some FILMTEC membranes SW30HR BW30 XLE NF270 Feed pressure (psi) 370 150 70 50 Feed pressure (bar) 25 10 5 3.5 Rejection (%) Sodium chloride NaCl 99.7 99.4 98.6 80 Calcium chloride CaCl2 99.8 99.4 98.8 50 Magnesium sulfate MgSO4 99.9 99.7 99.2 99.3 At 18 ... Read More »
Membrane filtration overview
March 23, 2016
Sorry, this entry is only available in Français. Read More »
Membrane systems equipments material
February 4, 2016
Tubing: PVC 80 / stainless steel 304 et 316 / Polypropylene Pumps: stainless steel 304 et 306 /Noryl /Brass Manual valves: stainless steel 304 et 316 / PVC 80 / Epoxy PID valves: stainless steel 304 Selenoïdes valves: stainless steel 304 et 316 / Brass / PVC Pressure sensors: stainless steel 304 / 306 Flowmeters sensors : Polyfluoroethylene (PTFE) / ... Read More »
Cleaning water treatment membrane systems
October 6, 2013
Sorry, this entry is only available in Français. Read More »
Water treatment membrane systems validation
October 6, 2013
In Quebec, membrane treatment technology applied to water treatment needs a ministry approval before implantation. The system must undergo to a specific procedure enacted by the ministry of environment and managed buy Quebec office of normalization (BNQ). Read More »
Ultrafiltration operation parameters
March 23, 2010
UF membrane operation parameters Piloting INGE Dizzer 5000 membrane modules Membrane module parameters: Multibore type membrane: 7 tubes, ID: 0,9 mm; ED: 4,3 mm; Suface area: 45 m2; MWCO : 100-150 kDa; Recommended flow: 60-140 L/(m2h). Operating parameters set: QE : 4,07 m3/ h QP : 4,07 m3/h QBW : 8 m3/h (backwash flow) QFWF ... Read More »