The first and simplest is a DI water feed systems with no recircualtion. The cutoff point is usually about 200 k ohmos depending of the type of flux and contaminant level on the panels. If high resistivity is desired, a mixed bed coumn is added after the system for 18 megohm water quality. The second type of system is a DI recirculation system with scavenging for lead. This is for saphonifier free washers.
Water is recirculated to the washer and both heat and water are conserved.
The third type of system is for saphonifier containing rinse waters. In closed loop systems, the saphonifiers will build up and some will destroy ion exchange resins unless removed. The usual saphonifiers are difficult to remove due to their lack of ionic charge and their low molecular weight. Carbon has a low capacity for saphonifiers such a butyl cellusolve and triethylolamine and they are low in molecular weigh and pass through an RO memberane. We look at each saphonifier system individually and will recommend a system for that situation.