ELGA Process Water meets Parker domnick hunter’s exacting quality requirements

ELGA Process Water has supplied Parker domnick hunter, process division, the high quality filter specialists, with a new high purity water treatment system to supply in excess of 15m3/h including recycled water. Mains water is pre-treated by a pair of CarboSoft units to remove hardness and free chlorine prior to passing through reverse osmosis (RO) modules. This is followed by electrodeionisation (CDI-LX) and Ultrafiltration to produce high purity water with conductivity less than 1.3µS/cm @ 25°, TOC less than 500ppb, total bacteria below 100 cfu/ml and bacterial endotoxins less than 0.125 EU/ml. Both the RO and CDI-LX membrane processes are heat sanitisable, and the two new stainless steel ring main distribution systems are provided with UV and ozone disinfection facilities.

Parker domnick hunter aspires to excellence in filtration, separation and purification products for a wide range of industries and applications, and water quality is critical to maintaining this high standard, as Manufacturing Engineering Manager, Derek Calder, explains: “Our filters go into many pharmaceutical and food and beverage systems, so quality is a paramount concern in the water we use for flushing and testing finished filters.” That quality has to be maintained not only at the point of production but at the point of use. This means that microbiological control in the distribution system is every bit as important as the water purification plant itself. ELGA Process Water not only designed and installed the two new ring mains but carried out modifications to two existing distribution systems to improve performance, complemented by Parker domnick hunter’s own microfiltration housings and cartridges which have been installed into this system.

The water purification plant is supported by a five year Fully Comprehensive Service and Maintenance contract, under which ELGA Process Water inspects the system every month and services it quarterly. The contract also includes all consumable items, chemical cleans and spare parts thus ensuring Parker domnick hunter can concentrate on their production with confidence which includes supplying ELGA Process Water with similar products for other systems.