Reference Letter for Customer Location SD48:
...(We have) a four-cell system with six circulators in use. We have two circulators in each primary and one in each of the secondary and tirciery cells. Since the installation, (the city's lagoons have) experienced a dramatic reduction in ammonia. Our discharge requirements are quite strict and require discharges to be below one part per million during the summer months. Prior to installation of the circulators, this level of treatment was difficult to achieve.
Our most recent discharge in February of 2002, had an average ammonia of less than six parts per million. The maximum amount measured during the two-week discharge was slightly over six. This is quite good considering the iced over conditions of the ponds during the winter months. Our winter 7-day average limit is 8.73.
(We are) satisfied with the performance of the circulators and have received many positive comments on the odor reduction from the neighboring property owners....
PSI developed, manufactured, and installed this equipment. Beginning in Sept, 2001, PSI adopted the name "SolarBee" for this technology.
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