EARLE C KING
Engineers in Evans City, PA
License number
Pennsylvania PE001541E
Category
Engineers
Type
Professional Engineer
Address
Address
Evans City, PA 16033
Professional information
Apparatus For Increasing The Ph Of Waste Water
US Patent:
4116834, Sep 26, 1978
Filed:
Aug 1, 1977
Appl. No.:
5/820887
Inventors:
Earle Cochran King - Evans City PA
Assignee:
Mine Safety Appliances Company - Pittsburgh PA
International Classification:
C02B 118, C02B 130
US Classification:
210 96R
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.