Smith Engineering’s Cold-Clean approach to the manufacture of USP Purified Quality Water is continuing its growth in the Purified Water market. Smith recently provided a Wisconsin biotech firm with a 20 gpm Cold-Clean System that incorporated 1500 gallons of storage. The Sani-Tech distribution loop supplies 17 points of use including environmental humidification. Smith Engineering was able to take this project from concept through qualification entirely with in-house staff.
Cold-Clean is a term coined by Smith Engineering to discribe the philosophy adhered to in the manufacture of water treatment and distribution system meeting a variety of purity standards. Cold-Clean is an alternative to heated technologies for the production of low/no microbial process water. Typical design specification include the following:
• Resistivity / Conductivity
• pH
• Microbial / Endotoxin Levels
• Total Organic Carbon
Methods:
• Ro or RO/DI feeds Microfiltration/Ultrafiltration
• Recirculation Design Within the treatment equipemtn and storage
• Zero Dead Leg Design and Components
• Continuous Distribution System Velocity
• Ultraviolet Sterilization
• Routine Chemical Sanitization
Materials:
• Quality materials of construction including 316 stainless steel housings and vessels
• Sanitary, non-metallic piping materials beyond the last point of treatment
• USP Class VI Plastics and Elastomers
• Membrane-friendly sanitizers
Motivation:
• Significantly lower capital cost than traditional stainless steel systems
• No utility requirement for steam/heated water
• Lower operating cost; no requirement to power expensive, energy consuming heaters or stills
• Easily installed, modified, and expanded
• Design thru Validation capabilities from a single vendor
• Green design