Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Material level or thickness responsive
Patent
1982-01-04
1983-06-07
Adee, John
Liquid purification or separation
With alarm, indicator, register, recorder, signal or...
Material level or thickness responsive
210137, 210188, 210256, 210921, B01D 2124
Patent
active
043870201
ABSTRACT:
A flow control apparatus is described for inclusion in a waste water treatment system intermediate a surge tank and a first active processing stage such as a biological treatment tank employing a trickling filter. The apparatus consists of a form of "head box" which smooths out the variations in the output of the surge tank. The apparatus consists basically of one tank enclosed within another. Water from the surge tank fills the inner tank and spills over its flat rim to form an efficient head control weir. The inner tank is provided with a submerged orifice which acts as a flow control weir discharging freely into the air space above the free water surface of the succeeding processing stage. The top of the outer tank is closed and sealed to isolate the intense air pressure, which is vented through the inner tank to the air in the succeeding stage. This insures that no differential pressure exists between these two internal air spaces and that no contamination of the external environment occurs. The outer tank accumulates the overflow from the inner tank and returns it through a U-trap to the surge tank.
REFERENCES:
patent: 838535 (1906-12-01), Greer
patent: 3193989 (1965-07-01), Sebeste
patent: 3951788 (1976-04-01), Ward et al.
patent: 4303527 (1981-12-01), Reimann et al.
Adee John
Atlantic Richfield Company
Betz Robert M.
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