pa1778data.pdf
pa1778data.pdf
pa1778data.pdf
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
U.S. STEEL DUQUESNE WORKS<br />
HAER No. PA-115<br />
(Page 200)<br />
pump is connected by means of a 12" diameter pipe to a drum<br />
filter assembly. Laid out on a north-south axis, each Dorr-<br />
Oliver vacuum drum filter assembly consists of a 10'-0" diameter<br />
x lS'-O" long cloth covered drum set inside a basin. The eastern<br />
side of each basin consists of a slurry tub, the western side<br />
consists of a chute leading directly to a dumping area below.<br />
Located just south of each drum filter, near the eastern and<br />
western walls of the building is a 2 , -0" diameter x 10'-0" high<br />
filtrate receiver. Also associated with each vacuum drum<br />
assembly is a set of compressed air piping.<br />
Construction date: 19 63.<br />
Installation of all equipment: 1963.<br />
F. Acid Storage Tank: A 10,000 gallon capacity sulfuric acid<br />
storage tank is located along the northwest side of the<br />
clarifier. The 20'-0" diameter x 19*-0" long tank sits in a<br />
limestone filled pit.<br />
Installation date: 1979.<br />
G. Neutralization Tank: A 6,175 gallon capacity<br />
neutralization tank is located along the western side of the<br />
clarifier. Overflow water from the clarifier's launderer is<br />
treated with sulfuric acid in the 9'-l M diameter x 13'-0" high<br />
tank before 900 gpm of the water is recycled by gravity to the<br />
gas quench pumps while the remainder (750 to 1800 gpm) is fed to<br />
the wet well.<br />
Installation date: 1979.<br />
H. Wet Well: Located just west of the neutralization tank and<br />
laid out on a north-south axis is a 10'0" wide x 17■-0" long x<br />
15'-0" deep, 18,000 gallon capacity concrete wet well. The well<br />
partially extends into the southwest corner of the chemical feed<br />
pump house. Water entering the wet well is treated with a<br />
calcium dispersant before it is pumped over to the filtration<br />
system.<br />
Construction date: 1979.<br />
I- Chemical Feed Pump House: Laid out on a north-south axis,<br />
the 14 f -0" wide x 22'-8" long x 10 f -8" high pump house is located<br />
just north of the neutralization tank. Built on a concrete<br />
foundation, the building is constructed of concrete block.<br />
Three vertical cantilevered, variable speed Morris pumps<br />
(450 or 900 gpm) powered by 30 hp motors, are laid out linearly<br />
in the southwestern corner. They pump water from the wet well to<br />
the filtration system. Four 1/2 hp Milroyal A metering pumps are<br />
laid out linearly along the northern wall. The two western pumps<br />
deliver sulfuric acid at a rate of 1.1 gpm to the neutralization<br />
tank. The eastern pumps deliver calcium dispersant to the wet