초록 ▼

A system for dissolved air floatation treatment of a liquid stream where the system includes a pump having an impeller cavity with input and output ports, and an impeller with an eye disposed adjacent the input port. The impeller draws liquid through the input port and drives the liquid toward the o

A system for dissolved air floatation treatment of a liquid stream where the system includes a pump having an impeller cavity with input and output ports, and an impeller with an eye disposed adjacent the input port. The impeller draws liquid through the input port and drives the liquid toward the output port and creates a subatmospheric pressure zone in the cavity away from the eye. The pump includes an air introduction port opening into the subatmospheric zone to introduce significant quantities of air into the cavity for mixing with the liquid stream. The system also includes a tank adapted to receive the liquid stream from the pump with dissolved air introduced therein.

대표청구항 ▼

[ It is claimed and desired to secure by Letters Patent:] [1.] A dissolved gas floatation tank system comprising:a tank;an influent feed pipe adapted to deliver influent feed into the tank;a waste output port adapted to carry waste from the tank;an effluent output line to carry effluent from the tan

[ It is claimed and desired to secure by Letters Patent:] [1.] A dissolved gas floatation tank system comprising:a tank;an influent feed pipe adapted to deliver influent feed into the tank;a waste output port adapted to carry waste from the tank;an effluent output line to carry effluent from the tank;a recirculation line extending from the tank to the influent feed pipe, the recirculation line being adapted to receive effluent from the tank for transport through the recirculation line;a pump system in fluid communication with the recirculation line for dissolving gas into the effluent, the pump system including a centrifugal pump having an impeller with an eye and a volute; andsaid pump having a gas introduction port opening into a subatmospheric zone in to the pump for introducing gas directly into the pump, wherein said port opening and zone are away from the eye of the impeller.