This slide presentation outlines innovative membrane research in Canada. Goals for treatment include:
particle removal (including pathogens);
total organic carbon (TOC) removal;
disinfection/inactivation;
removal of chemical contaminants; maximizing biological stability;
maximizing chemical stability; and,
maintaining aesthetic quality to the tap. Major research issues included:
fouling;
membrane integrity;
small systems; and,
coincidental removal of other contaminants. Types of foulants included:
particulate;
organic;
bio-organic;
inorganic; and,
(On the surface or in the pores). Measures re fouling included:
pretreatment - reducing the foulants;
operational - aeration, backpulsing; and,
chemical cleaning. NSERC Strategic Project
Title: Enhancing the Sustainability and
Applicability of Membrane Processes for Drinking
Water Treatment. Objectives:
develop a better understanding of the effect of
specific pretreatments on fouling;
quantify and optimize the ability of
membranes (in combination with
pretreatment) to remove pharmaceuticals and
EDS, while minimizing fouling; and,
coagulation, biofiltration, AOPs, IMS. Recently funded CWN project
"Advancement of Membrane Processes for
Canadian Drinking Water Treatment Facilities". Major objectives:
fouling abatement - targeted removal of key
foulants, minimization of energy use for fouling
abatement;
integrated membrane systems for multiple
objectives - e.g. broadening membrane
applicability through improved pretreatment;
and, cost/benefits of membrane systems -
advancing integrity monitoring, reassessment
of relative health risks and benefits of
membrane treatment. Other projects outlined include: Development of an Integrated
Membrane Process for
Water Reclamation, objectives included: determine impact of pre-RO and post-RO
disinfection on
DBP formation,
coliform and virus control, and
nitrate;
determine impact of RO;
membrane type; and,
assess possible end uses for reuse water. Another project outlined: Development of Alternative Membrane
Integrity Detection Tools for Low
Pressure Membranes Treating Filter
Backwash Water, objective to evaluate current integrity test methodologies for
UF membrane treatment of WTP residual streams;
particle counting and turbidity measurements;
explore alternative indirect integrity test methods;
DOC and color;
Capability for detecting "precursor" signals to breaches in a membrane
operating system (chronic increases in dissolved material (i.e., NOM). Includes tables, figures.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 940 KB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 46 |
| Published : | 06/01/2006 |
