According to Beer’s Law, absorbance is directly proportional to the path length of the UV light through the water sample. Absorbance is given by the following equation: UVA = ε•b•c where ε is the molar absorbtivity of the particular type…
With the ongoing concern about water quality in Alaska, Philip Downing, the Remote Maintenance Worker for South East Alaska Regional Health Consortium, offered a new approach to a plant’s ability to continuously monitor and adjust treatment processes in response to changes in raw…
UV ABSORBANCE The UV absorbance is calculated as a relative measure of the amount of light absorbed by a water sample compared with the amount of light absorbed by a pure water sample. The sample water measurement is actually divided…
Clean water is essential for life. Nearly one billion people around the world lack access to safe water and approximately 3.5 million deaths each year are linked to water related diseases.1,2 THE CHALLENGE The scarcity of clean water is most apparent in developing countries where limited resources are…
UVA and UVT are essentially just different representations of the same physical phenomenon. They can be related by a simple mathematical expression which indicates an inverse logarithmic relationship between UVA and UVT. UVA = 2 – log10 UVT Since UVT and…
WHAT IS UVT TESTING? Ultraviolet transmission or UV transmittance (UVT) is a water quality measurement. The method works by measuring the amount of UV light, typically at 254 nm, that is able to pass through a water sample of a…
UV254 is a water quality test parameter that provides a quick measurement of the organic matter in water. The measurement technique works by shining ultraviolet light (UV) light at 254 nm through a quartz cells that contains a representative water…
Mohawk Valley Water Authority (MVWA) in New York State is a progressive supplier of potable water. With source water from the Adirondack Mountains, MVWA works to improve on nature and provide superior water quality, always striving to meet or exceed…
ROLE OF NATURAL ORGANIC MATTER IN DRINKING WATER TREATMENT Natural organic matter (NOM) in source water is a complex mixture of many carbon-based compounds that result from the breakdown/decay of plant and animal tissue. In the water treatment industry, NOM…
PREPARING FUTURE WATER & WASTEWATER TREATMENT PLANT OPERATORS Linn-Benton Community College in Oregon, USA is preparing students for careers as water or wastewater treatment plant operators with a variety of “hands-on” labs, such as jar testing, designed by program head…
