Apparatus for increasing the pH of waste water

Details Apparatus for increasing the pH of waste water Apparatus for increasing the pH of waste water

1977-08-01

1978-09-26

Adee, John

Liquid purification or separation

Constituent mixture variation responsive

With membrane

210101, 210103, 210206, C02B 118, C02B 130

Patent

active

041168348

ABSTRACT:
Lime from a hopper is fed to a lime slurry tank by a variable speed feeder, the tank receiving water from a conduit in which there is a throttle valve and a flowmeter. Slurry from the tank is delivered to a mixing tank that has an inlet for untreated waste water and an outlet for treated waste water. A sensor responsive to the pH of treated waste water leaving the mixing tank controls a device for operating the throttle valve, and the flowmeter controls a device for operating the lime feeder to keep the concentration in the slurry tank substantially constant regardless of the rate of flow out of that tank.

REFERENCES:
patent: 793727 (1905-04-01), Kniffler
patent: 2661332 (1953-12-01), Moatenson
patent: 2772779 (1956-12-01), Norris
patent: 3238128 (1966-03-01), Gustafson

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