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Used Used: Alar Auto-Vac Filter, model 6120. The dewatering system consists of a precoat slurry tank, a screw conveyor for charging filter aid to the precoat tank, a rotary vacuum filter, a vacuum pump, a filtrate pump, and belt conveyor for solids removal. The rotary vacuum filter consists of a cylindrical drum measuring six (6) feet in diameter by twelve (12) feet in length. The driven is driven by a 5 hp, 1750 rpm electric motor through a Reeves varidrive unit, providing a speed range of 6 rpm minimum to 30 rpm maximum. The filter drum is suspended in a filter pan with an oscillating agitator driven by a 2 hp, 1140 rpm electric motor through a 60:1 gear reduction unit. The filter cake knife is driven by a DC synchronous/stepping motor. Vacuum is provided by a Grahan single stage, liquid ring vacuum pump driven by a 50 hp, 1750 rpm electric motor. Filtrate is removed from the system by a self-priming LaBour centrifugal pump driven by a 10 hp, 1735 rpm electric motor. Bags of filter aid are dumped into a hopper that feeds a screw conveyor and elevates the material into a polyethylene precoat slurry tank. The dumping hopper has an electrically driven bridge breaker and an electrically operated bin vibrator. The screw conveyor is driven by an electric motor mounted at the discharge end of the conveyor. The precoat tank is made of polyethylene and has a capacity of about 1250 gallons. It is equipped with a top mounted agitator. Waste sludge in a digester basin normally has a solids content of 2-3%. At this concentration, the rotary vacuum filter should be capable of handling 10-15 gallons per hour of sludge for each square foot of filter area. The area of the drum is about 226 square feet, for a filtration rate of about 2,250 - 3,400 gallons per hour, or about 38-56 gallons per minute.
Used Used: Alar Auto-Vac Filter, model 6120. The dewatering system consists of a precoat slurry tank, a screw conveyor for charging filter aid to the precoat tank, a rotary vacuum filter, a vacuum pump, a filtrate pump, and belt conveyor for solids removal. The rotary vacuum filter consists of a cylindrical drum measuring six (6) feet in diameter by twelve (12) feet in length. The driven is driven by a 5 hp, 1750 rpm electric motor through a Reeves varidrive unit, providing a speed range of 6 rpm minimum to 30 rpm maximum. The filter drum is suspended in a filter pan with an oscillating agitator driven by a 2 hp, 1140 rpm electric motor through a 60:1 gear reduction unit. The filter cake knife is driven by a DC synchronous/stepping motor. Vacuum is provided by a Grahan single stage, liquid ring vacuum pump driven by a 50 hp, 1750 rpm electric motor. Filtrate is removed from the system by a self-priming LaBour centrifugal pump driven by a 10 hp, 1735 rpm electric motor. Bags of filter aid are dumped into a hopper that feeds a screw conveyor and elevates the material into a polyethylene precoat slurry tank. The dumping hopper has an electrically driven bridge breaker and an electrically operated bin vibrator. The screw conveyor is driven by an electric motor mounted at the discharge end of the conveyor. The precoat tank is made of polyethylene and has a capacity of about 1250 gallons. It is equipped with a top mounted agitator. Waste sludge in a digester basin normally has a solids content of 2-3%. At this concentration, the rotary vacuum filter should be capable of handling 10-15 gallons per hour of sludge for each square foot of filter area. The area of the drum is about 226 square feet, for a filtration rate of about 2,250 - 3,400 gallons per hour, or about 38-56 gallons per minute.
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