By Mohan Seneviratne
And trade use giant quantities of water, and in a few elements of the area water is turning into a scarce commodity. This booklet is a 'best perform' handbook for water conservation for commercial and advertisement clients world-wide. It bargains a realistic account of the measures which are taken to re-educate business and advertisement clients within the recommendations of water saving and re-use - wherever on the earth.
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Additional resources for A Practical Approach to Water Conservation for Commercial and Industrial Facilities
Uk. August 2005.  Gleick P. Waste Not Want Not – The Potential for Urban Water Conser vation in California. Paciﬁc Institute. Oakland, California. November 2003.  European Environment Agency. Sustainable Water Use in Europe: Part 1 – Sectoral Use of Water. Brussels. 1999.  Department of Natural Resources and Planning. NSW Govt Securing Sydney’s Water Future. Sydney. 2004. 24 A Practical Approach to Water Conservation  The Environment Agency. It Pays to be Green. Environment Agency tells Business and Investors.
Most common is silica SiO2 , ranging from 1 to 100 mg/L in natural waters. Higher concentrations are found in waters with signiﬁcant volcanic activ ity. The total silica levels are comprised of reactive silica and unreactive silica. Reactive silica (silicates SiO4 ) is dissolved silica that is slightly ionised and has not been polymerised into a long chain. Silicate scale is formed when soluble silica reacts with Ca2+ and Mg2+ to form various complex silicates at high temperatures. For this reason silica concentrations are controlled below 150 mg/L in cooling water systems.
For this reason heavy metal concentrations are regulated by the EPA and water utilities. 1 Chromium Chromium is a naturally occurring element found in rocks, animals, plants, soil and in volcanic dust and gases. Chromium is present in the environ ment in several different forms. The most common forms are as the ele ment chromium(0), chromium Cr3+ and chromium Cr6+ . No taste or odour is associated with chromium compounds. Chromium Cr3+ occurs natu rally in the environment and is an essential nutrient.