To me it's surprising how many people have no idea where their drinking water
comes from or where it goes after they flush the toilet.
When I open up a faucet I taste & smell the water to make sure that it's up the standards.
Yeah, I'd monitor that.
Hill Engineering was formed in 1898,
it's one of the oldest engineering firms in the country.
It was acquired by GPI in 2016.
Hill Engineering pretty much does the same thing that we're doing for GPI
today we do water & wastewater treatment plants they've built a number
of facilities throughout western Pennsylvania & western New York.
This was the original treatment plant built in 1903 it was pretty much a glorified
septic tank called an Imhoff tank so it treated all the wastewater in the town
it was just one large tank and in the last hundred years we've gone from this, to all this.
Wastewater is collected in sanitary sewer pipes conveyed to a
central location where the wastewater treatment plant is one basic type of
treatment process is what we call activated sludge which is what we have here at Northeast.
We're at the Northeast Pennsylvania site one wastewater
treatment plant we're at the head end of the plant so when you flush the toilet
it comes into this tank this is the first part of the process when we look
at wastewater capacity we look at flow and organic loading it treats 30,000
pounds per day of B.O.D. which is an equivalent service population of about a 125,000.
We have aeration tanks where we add air to
break down the the organic waste through bacteria that we grow in those tanks.
The next step is here at the wastewater aerated lagoon we have about four
million gallons of wastewater under aeration in these aeration tanks we grow
bacteria that break down the wastewater and remove the organics.
We settle out that bacteria and clarifiers the water is pumped into this clarifier
tank this is about a hundred foot diameter tank and we settle out the
wastewater solids we take the settled sludge and send it to a digester to break it down further.
We pump those solids to anaerobic
digestor where with the aeration further breaks down the solids prior to dewatering
there's about 700 thousand gallons of solids under aeration in these two tanks.
Then that digested sludge is then dewatered and the solids are
typically sent to a landfill or maybe land applied this is our sludge
dewatering building the solids from the aerobic digester are pumped to here and
we dewater those solids into a cake that goes to the landfill.
We have a centrifuge and a belt press in this building that dewater the solids we send
a 28 ton tri-axial full of dewatered sludge to the landfill about every three hours.
GPI is up to speed with all the latest treatment technology including
meeting tertiary standards familiar with all the state and federal regulations
pertaining to water and wastewater.


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