Demineralisers Basic Schema Car Wash Process Water Softener

Demineralisers Basic Schema Car Wash Process Water Softener Fresh Water Oil Separator Class I SEWAGE Reverse Osmosis & Optional Equipment Biological Recycler Physical Recycler Disinfectant Doser PRETREATMENT Physical - Chemical Purification Unit POST-TREATMENT Water Treatment Division

Demineralisers. Why are they installed? • • • To be able to offer a high quality car wash In order to avoid spots after each wash Demineralised water has a very low salt content and prevents spots from appearing Tap Water Final Dry Surface Initial test surface Demineralised Water Final Dry Surface Water Treatment Division

Demineralisers How does a Demineraliser work? Reverse Osmosis Diluted Solution Flow semi-permeate membrane Diluted Solution Osmotic Pressure Concentrated Solution Natural-Direct Osmosis When two solutions with different concentrations (pic 1) enter in contact by means of a semi-permeate membrane, natural forces make water flow from the most diluted to the most concentrated solution until their salt concentrations are equal at both sides of the membrane (pic 2). Concentrated The level difference is the so called Osmotic Pressure. Solution semi-permeate membrane Reverse Osmosis After careful observation of this phenomenon, this situation could be reversed by application of a pressure that should be at least the same as the Osmotic Pressure, making the water to flow in a non-natural Concentrated direction through the membrane (pic 3). Solution Diluted Solution semi-permeate membrane Water Treatment Division

Demineralisers THE MEMBRANE The membrane is inlayed in a tube and rolled up as an spiral, so several filtration layers are formed. Membrane Semi-permeate Mesh Separator Spacer Membrane Water Treatment Division

Demineralisers THE MEMBRANE The membrane is inlayed in a tube and rolled up as an spiral, so several filtration layers are formed. Raw Water Inlet Rolled up membrane Water Treatment Division

Demineralisers MEMBRANE The membrane is inlayed in a tube and rolled up as an spiral, so several filtration layers are formed. Inlet of pressured raw water The water passes through the membrane layers Rolled up membrane Water Treatment Division

Demineralisers MEMBRANE The membrane is inlayed in a tube and rolled up as an spiral, so several filtration layers are formed. Inlet of pressured water Reject water Demineralised water Water Treatment Division

Demineralisers How does a Demineraliser work? Membranes Water Treatment Division

Demineralisers How does a Demineraliser work? Membranes ASSEMBLY OF MEMBRANES IN SERIES WASTE WATER ACCUMULATION OF SALTS ASSEMBLY IN THE EQUIPMENT TREATED WATER FEED WATER JOINT RING ACCUMULATION OF BACTERIA Water Treatment Division

Demineralisers How does it work? Reverese Osmosis Water Treatment Division

Demineralisers. Sales arguments • Waters with higher salinity and different chemical content (filtration or desinfection) • Antiscalant instead of a water softener Ø Suitable for very hard water Ø Cheaper Ø Ecological Ø Requires less room Production can be upgraded by adding elements Need of previous chemical-microbiological analysis Ø Wide range of pre-treatments. Ø Decrease of break-downs Ø Optimal antiscalant dose Equipment that can be assembled into a cabinet Wide ranfe of safety measures. Compromises among equipment protection and ease of maintenance High quality in critical components (recognised Brands) • • • Water Treatment Division

Demineralisers. Estimate Configurator Take a sample IT- 11 -56 Samples IT- 11 -55 Chlorine Identification Recommended Configuration Lab analysis Analysis Results Data Input in the Estimate Configurator Water Treatment Division

Demineralisers. Product Portfolio High Capacity Demineraliser. Under Development Medium Flow Demineraliser Range 4 DA 1 x 00 & 4 DA 2 x 00 Small Flow Demineraliser Range 4 DA 3 x 00 & 4 DA 4 x 00 ? 1 up to 4 m 3/day 4 up to 22 m 3/day ? ? More than 22 m 3/day Water Treatment Division

Demineralisers Universal Standard Membranes Ø Capacity Nomenclature Dimension (Not Proportional) Suitable 25 40 Ø = 2. 5” L = 40” 50 – 60 l/h 4 DA 3100 to 4 DA 4300 40 40 Ø = 4. 0” L = 40” 220 – 250 l/h 4 DA 1100 to 4 DA 2400 80 40 Ø = 8. 0” L = 40” L High capacity RO equipment under development Reverse Osmosis Membrane Water Treatment Division