Glossary of Terms - "S"
|Safety Inlet Valve||
This is the same as the chlorinator inlet valve.
The water line into which a chlorine or sulfur dioxide solution is injected.
Due to the high concentrations of bacteria and other microbiological organisms in waste water, commensurate high concentrations of chlorine are necessary for proper disinfection. Treated waste water is discharged to tributaries through NPDES (National Pollutant Discharge Elimination System) outfalls, and an NPDES permit restricts the allowable chlorine concentration of the discharged water. Sulfonators are used to inject measured amounts of sulfur dioxide into chlorinated waste water for the purpose of dechlorination.
|Supply Line Pressure||
Water pressure of the water line which supplies water to the ejector, usually expressed in pounds-per-square-inch (P.S.I.). This pressure must be greater than the back pressure of the water system being chlorinated.
A device which is used to automatically change the supply of chlorine gas from an active cylinder which has just emptied to a full cylinder. The loss of vacuum from the empty tank causes a valve in the switchover device to change position, shutting off the gas feed from the empty tank and opening the inlet valve of the chlorinator on the full tank. Both single-point and multi-point applications systems use switchover devices.