METHOD AND APPARATUS FOR HANDLING WATER AT LOW AND HIGH FEEDRATES

摘要

A liquid-handling installation utilizes an upstream and a downstream separator unit, each unit having a horizontal partition defining a treatment compartment below the partition and an overflow compartment above the partition. Each unit has an inlet opening and an outlet opening. Two conduits communica te the outlet opening of the upstream unit with the inlet opening of the downstream unit. The operating process includes: a) dividing into first and second substantially equal streams any liquid arriving at the inlet opening of the upstream unit; passing the first stream through the upstream unit treatment compartment, thence along the first conduit, thence over the downstream unit partition to the outlet opening of the downstream unit, and simultaneously passing the second stream over the upstream unit partition, thence along the second conduit, thence through the downstream unit treatment compartment, and finally to the outlet opening of the downstream unit; and b) when the total arriving liquid is greater than can be accommodated by the two treatment compartments, allowing the liquid to overflow all weirs an d partitions and pass directly from the upstream inlet opening to the downstre am outlet opening.