Swan Analytical USA Articles
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Drinking Water Disinfection – A History And Improved Monitoring Techniques
7/3/2015
In many countries we take for granted the availability and reliability of safe drinking water. A recent trip outside of the US reminded me of this fact when I saw notices in the hotel rooms stating the drinking water met specific standards and was safe to drink however, my friends from the country emphatically warned me to not drink the water.
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Monitoring Chlorine Residuals For RO Membranes - ORP Versus Chlorine Analyzers
7/14/2015
In processes where disinfection is required chlorine is the most common and economic disinfectant followed by sodium hypochlorite (liquid bleach). It is important to disinfect the RO feedwater to avoid fouling of the membranes which results in poor performance and frequent cleaning.
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Monochloramine Monitoring – Reliable Analysis, Safer Drinking Water
6/30/2015
The Safe Drinking Water Act (SDWA), enacted in 1974, is the main federal law that ensures the quality of Americans' drinking water. Under SDWA, EPA sets standards for drinking water quality and oversees the states, localities, and water suppliers who implement those standards. The law was amended in 1986 & 1996 requiring many actions to protect drinking water and its sources.
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Municipal Wastewater Reuse – The Challenges Ahead
6/17/2015
Water resources are becoming more constrained. Obtaining surface or groundwater withdrawal permits is becoming increasing difficult. Often times deep well total dissolved solids (TDS) is often very high which requires pretreatment to reduce TDS thereby increasing operating cost. Salt water intrusion is occurring in coastal regions. Droughts routinely impact water quality and availability.
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10 Tips For Accurate Disinfection
4/10/2015
Disinfection can rightly be called the “ultimate” stage of drinking water treatment — typically occurring at the end of the process, and acting as a final step before water is sent out of the plant, through the pipes, and into the world. It may come last, but it’s certainly not least.
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Case Study Of Swan Turbiwell Quarterly Calibrated Unit Versus Quarterly Verified Unit
3/14/2014
This paper presents the field data collected over a twelve month period at a municipal surface water treatment plant employing traditional clarification and filtration. The final effluent turbidity was monitored by the third party compliance turbidimeter, a Swan Turbiwell (Protocol Turbiwell) was calibrated quarterly just as the compliance turbidimeter, and a second Swan Turbiwell (Non-protocol Turbiwell) that was not calibrated. By Shaun Sharrett and Randy Turner, Swan Analytical USA
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Turbidity 'A Quantum Leap In Technology'
12/18/2012
Turbidity is a principal physical characteristic of water and is an expression of the optical property that causes light to be scattered and absorbed by particles and molecules rather than transmitted in straight lines through a water sample. By Randy Turner, Technical Director, Swan Analytical USA