Today's user is often faced with the challenge of meeting several international standards and regulatory guidances as well as performing sampling for airborne particles in a consistent and reproducible manner.  This session speaks to the regulatory and sampling issues and covers the potential for automation of all or parts of the airborne monitoring efforts.

10:00 am - 10:45 am ET
Optimizing Nutrient Removal Through Instrumentation
Bob Dabkowski, Wastewater Specialist, Hach Company

The leading proponents of Nutrient Removal have indicated that online instrumentation is critical to the operation and optimization of nutrient removal systems. But where to begin? What instrumentation provides the best value? What will the information mean?  What measurements should be done in the lab?  Questions such as these need to be answered before decisions are made to add instrumentation, through researching reference material and interviewing other nutrient removal facilities.  Researching the topic reveals there is a lack of information about this topic, and no centralized reference material for which to draw conclusions.

10:00 am - 10:45 am ET
Trace Level On-line Sodium Analyzer with Low Maintenance
Greg Thomas, Application Development Manager, Hach Company

11:00 am - 11:45 am ET
Air vs. Dissolved Oxygen - Understanding How to Interpret Oxygen Measurements.  How much O2 is Too Much?
Chaz Benedict, Application Development Manager

Elevated oxygen levels in aluminum cans can lead to pin-hole corrosion through the can wall, leading to leaking packages.  The measurement of "Package Air"  requires strict parameters that may result in out-of-spec packages, which in fact have acceptable amounts of oxygen in the can.  This 45-minute session discusses "Package Air", "Total Package Oxygen" and "Dissolved Oxygen" and shows how to correlate that differences to help determine which measurement method is best for your facility.

Manganese and chloramines are known to interfere or breakthrough when testing free chlorine using DPD methods.  In the case of manganese, thioacetamide or sodium arsenite compensating techniques are used resulting in a hazardous waste.  To compensate for chloramine presence, tests are extremely time sensitive which introduces variability.  This session introduces a new method for determining free chlorine concentrations in the presence of manganese or chloramines and will present the benefits of the increased accuracy obtained in waters with these special conditions.

1:00 pm - 1:45 pm ET
Comparison of On-line Chlorine Analysis Methods and Instrumentation -- Amperometric vs. Colorimetric
Vadim Malkov, R&D Chemist, Hach Company

Historically, both amperometric and colorimetric technologies have been widely used for monitoring free and total chlorine residual concentrations within water treatment processes and distribution systems.  However, the accuracy of the amperometric sensors and the necessity to routinely calibrate them against accepted methods brings into question their suitability for regulatory reporting.  The goal of this session is to present bench testing and on-site case studies that evaluate the accuracy of the amperometric technology for measuring chlorine residual concentrations.