A Membrane Pretreatment Technology
Nearly all membrane systems, no matter what their raw water source, must utilize some form of pretreatment to remove unwanted organic and inorganic suspended solids. Bag and cartridge filters are efficient at removing suspended solids but must be replaced on a frequent and often costly basis. Some form of suspended solids removal system that cleans itself, maintains high flow rates and stays online at all times with a very low pressure drop would be ideal. That piece of equipment exists. A versatile fully automatic self-cleaning screen filter can remove up to 99% of all suspended solids from membrane influent allowing fine cartridge filters, if needed, to polish with very infrequent replacement. New screen filter technology makes possible the removal of all particles down to 10 microns without depending upon filter aids such as diatomaceous earth or self-forming filter cakes.