LVH Coatings CLEARCLAD process T.R.A.P system

UF operation without TRAP - Problems

• The bath level has to be continuously maintained by additions of pure water.
• Some useful materials for the process are present in the permeate and are lost.
• Such materials have to be replenished, usually after time consuming bath analysis.
• High volumes of effluent are produced.
• Less permeate is available for rinsing and drag-out reclamation.

As a result, in order to maintain production rates, it is necessary to only operate the UF process as a campaign between production periods. This enables contamination levels to rise which results in rejects. The re-processing of these extends production time allowing less opportunity for UF campaigns.....a vicious circle!

TRAP introduces ion-exchange (IE) technology into the UF permeate line. The IE facility selectively removes only the contaminants, leaving useful solvents and other necessary additives. UF permeate elimination is considerably reduced or virtually zero. This reverses the problems listed above:

UF operation with TRAP - Benefits

• Bath levels only need to be periodically maintained.
• Useful process materials are retained removing the need for continuous analysis.
• Effluent is significantly reduced.
• Virtually all permeate is available for drag-out reclamation.
• The UF system can be operated continuously throughout production periods.

All the benefits of TRAP are for the user. Process control and quality are maximised, purchases of maintenance chemicals and effluent are minimised. TRAP is a good example of the application of technology to combine material conservation with reduced pollution - at reduced cost!