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Chemical Feed Reliability News September 2015

Chemical Feed Reliability News

     Vol. 3, No. 2                         Reported independently as Catalytic Objective Synthesis*                  September, 2015


Replacement Vacuum Feeders for Hypo and Bisulfite
Boost Disinfection Reliability for WWTP

Also Cut Bisulfite Consumption by 30%, and End Troublesome Maintenance Burden
for Instrumentation Tech and Plant Operators

Replacement liquid vacuum hypo feeders provide more reliable chlorination for disinfection requirements.

Replacement liquid vacuum hypo feeders provide more reliable chlorination for disinfection requirements.

The operations supervisor for Appleton, WI’s 15 MGD wastewater treatment plant (WWTP) reports that replacement of their troublesome liquid vacuum feeders for sodium hypochlorite (hypo) and bisulfite, with a next-generation liquid vacuum feeder, has ended feed outages due to plugging and leaks. He also notes a consequent 30% reduction in bisulfite needs, and the end of a troublesome maintenance burden that distracted their instrumentation technician and plant operators from their primary duties.
“We had been putting up with the frequent feeder outages caused by plugged up injector tube orifices, because we had other priorities. But when we also started to get leaking of the vacuum relief diaphragm, and couldn’t find a replacement for it, we decided to seek a new feed method,” recalled Robert Kennedy, the operations supervisor. “Fortunately, our original feeder vendor knew of a manufacturer of a next-generation vacuum feeder that didn’t need that troublesome diaphragm.”