West View, Penn., commissions 40 MGD UV reactor for water treatment
The Municipal Authority of The Borough of West View, Penn. has completed the installation of the largest ultraviolet reactor in the United States, the West View Authority said.
West View, Penn., May 14, 2001--The Municipal Authority of The Borough of West View, Penn. has completed the installation of the largest ultraviolet reactor in the United States, the West View Authority said.
The Authority commissioned the reactor April 19 from Calgon Carbon Corporation. This reactor, a 48-in. Sentinel, was specifically designed to inactivate Cryptosporidium, and Giardia as well as future emerging pathogens. The design can accommodate the full plant capacity of 40 MGD.
The facility is an ultramodern plant located on Neville Island, in the Ohio River about five miles downstream from Pittsburgh. It draws Ohio River water under normal circumstances, but also has a redundant well field that is maintained for emergency operations.
The treatment plant can be challenged by a number of environmental factors: Low flow in the summer, floods in the spring, industrial contamination, and the effects superimposed by one of the largest waste water treatment plants in this country.
Much of the river flow is subject to agricultural run off, as well as combined sewer overflows. The plant is a complete treatment facility which utilizes coagulation, sedimentation, and carbon filtration. Chlorination is applied to control bacteria and viruses and it provides the required residual to protect the distribution system from inadvertent contamination.
Calgon's Sentinel Reactor is configured as a final additional barrier against any cysts, or oocysts that may escape coagulation an filtration. The ultraviolet radiation destroys the DNA of the Cryptosporidium, making it unable to reproduce.
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