Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Material level or thickness responsive
Patent
1982-06-14
1985-03-19
Fisher, Richard V.
Liquid purification or separation
With alarm, indicator, register, recorder, signal or...
Material level or thickness responsive
210104, 210108, 210170, 210202, 2102212, 210248, 210260, 210411, 2105322, 210539, 261 87, 417421, C02C 102
Patent
active
045058130
ABSTRACT:
This disclosure is directed to a wastewater treatment plant which includes pretreatment, aeration, final clarification and overflow/backwash chambers adapted to receive a fluid, such as home wastewater, which is to be subjected to extended aeration or aerobic digestion, the aeration chamber including an aerator having a shaft whose lower end is normally received in the fluid which is to be treated, an aerator foam deflector carried by the shaft which under abnormally high fluid levels increases the torque on the shaft and, thus, indicates abnormal operation, the final clarification chamber including a demand use filter, an overflow outlet operative should the filter become disabled, and a backwash nozzle located in the filter by reverse pumping therethrough fluid pumped from the overflow or backwash chamber.
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Fisher Richard V.
Jones W. Gary
Norwalk Wastewater Equipment Company
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