Page 28 - Membranes for Industrial Wastewater Recovery and Re-Use
P. 28
'hble 1.5 Examples of water management, UK
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Type Application Scenario Solution Cost benefit
Audit Cellophane 750 m3/day of water unaccounted for Fix leak tlOO000p.a. saving[$l41580]*
production
Audit Laboratory Mains water used for single-pass cooling, Fit cooler (€2000) [$2831]* 6 month payback
12 m3/day
Housekeeping Resin factory Wash water contaminated by spillages Fit drip trays to point sources Effluent COD reduced by 75%,
from point sources €3000 p.a. saving [$4217]*
Housekeeping Plating plant Significant drag out of chemicals from Improve drainage around plating bath Reduced rinsewater contamination,
plating bath into rinse bath €1000 p.a. saving [$1416]*
Reuse Plating plant 0.4 m3/h mains water fed to three rinsing Use counter-current serial flow to all 50% water saving, €1500 pa. [$2 241'
baths in parallel, 1.2 m3/h In total three baths
Recycling Cadmium Zero discharge of cadmium imposed by Installation of deionisation plant to 12 monthpayback
plating regulator recover cadmium and water from
effluent
* Based on rate of 1.4158.02/06/2002.
