The scenario
A water treatment plant needs to route filter backwash water to a waste tank, thicken the settled sludge, and transfer thickened sludge to dewatering; an air scour blower assists filter cleaning, and a flow control loop regulates backwash flow.
What is in this drawing
Read the decisions behind it.
01
Use a dedicated backwash waste tank and sludge thickener to separate solids handling from filter operation.
02
Add a flow indicating controller (FIC-201) on the backwash line to modulate the control valve and maintain consistent backwash flow.
03
Include an air scour blower and check valve on the sludge transfer pump discharge to prevent reverse flow.
Reuse for water treatment plant P&IDs that show filter backwash, sludge thickening, and transfer systems with ISA loop instrumentation.
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