Definition - What does Flow Reduction mean?
Flow reduction is the process of removing excess water from a sewer network or collection system. Sewers from a geographic residential or industrial area eventually combine into a single stream for treatment before discharge. If this stream becomes too large for treatment units, ways must be found to reduce the total flow by repairing leaking sewers or redirecting some flows.
Trenchlesspedia explains Flow Reduction
One of the primary reasons for trenchless rehabilitation projects on wastewater sewer systems is the ingress of groundwater into the system, which increases the water flow beyond the design capacity of the system.
Rehabilitation techniques like Cured-in-Place Piping (CIPP) covers the pipe internals with a lining that prevents any groundwater from entering the sewer. By this method flow reduction into the sewer network and downstream treatment plant is achieved. If the increase in flow is due to increased residential or industrial load, some sewers will have to be moved from an overloaded collection system to another system with more capacity.