Wastech also builds
large custom pump lift stations (PLS) in addition to our
standard sizes.
A Midwest food processing plant
had to treat their industrial effluent for low pH. Large volumes
came from three different directions into a below-grade
collection pit. Wastech designed a 2000-gallon PLS package.
Cylindrical fiberglass tanks are
always used for in-the-ground applications with larger pumps.
The pumps lift the waste into a large equalization tank, and
from there the waste is treated in a 120 gpm neutralization
system. The pumps are mounted on rails with fittings similar to
municipal sewage lift stations. The rails allow the pump to be
disconnected from the discharge line and lifted to the surface
without “enclosed spaces” procedures. The traffic plate is
galvanized metal with a trap door.
One interesting feature was the
“sack filter” mounted into the PLS. The sack filter will screen
from 12 mm down to 3 mm with a disposable sack. Each sack is
mounted to a stainless steel nose box with handles to facilitate
removal.
