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At our datacenter in Belgium,
The Nimy Blaton Canal on the north side of the site
serves as the source for raw makeup water. The
intake chamber is protected by a steel “dolphin” unit,
which ensures that the intake will not be blocked or damaged
by ships or large debris.
The Intake Chamber has (2), stainless steel intake pipes each with isolation valves.
Each intake is sized for 100% of the total site capacity.
A compressed air tank periodically discharges across the bar grates
to dislodge any material that may accumulate.
Downstream of this Intake Chamber is the Metering Chamber to allow access for the local water authority.
From here, water flows to the Distribution Chamber, where initial solids settlement, and hydrocarbon sensing takes place,
and then flows into the 20,000 square foot Treatment Plant. The
plant consists of three main lines each capable of treating cooling tower makeup water for one third of critical capacity.
A combination Sand, Oil & Grease Separator receives the water as it enters the plant from the subgrade piping.
Aerators are used to disturb the water during the separation process. A
conveyor removes the sand from the fluid –
and the suspended solids are skimmed off and deposited in to containers to be recycled. With
most of the solids removed,
the water is passed over a Lamella Clarifier so
that the remaining particles will settle out.
This clarified water then flows over a V-notch weir,
and finally out to an open topped, polyethylene buffer tank. The
buffer tanks provide a net positive suction head for the pumps below.
Sludge removed from the settling processes is emptied to a sub grade sludge chamber.
From this chamber centrifugal pumps move the sludge to a cyclonic separator to remove all the water.
Once the sludge is dry, a screw conveyor deposits the material into storage containers for removal.
The dried sludge is used for landfill,
and as a filler component for cement manufacturing.
The piping to the various tanks and process equipment within the plant is interconnected for redundancy
and concurrent maintainability.
Duplex pumps are used to pump the clarified water in to Sand Filters.
The water trickles through the beds of sand in the filters and is further clarified in this process. The
treated water is stored in the 3 above grade water tanks where chemical treatment takes place to control microbial growth. The
water is pumped from the Canal Water Treatment Plant to the cooling modules via underground, parallel redundant distribution pipes.
A distance of 30 feet separates each pipe, and
the mechanical yard is fed from both lines in a looped fashion for increased redundancy. Samples
of the canal water, before and after treatment,
show the effectiveness of the water treatment plant.