Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Responsive to fluid flow
Patent
1974-12-09
1976-12-21
Hart, Charles N.
Liquid purification or separation
With alarm, indicator, register, recorder, signal or...
Responsive to fluid flow
210632, 210 64, C02B 308
Patent
active
039987140
ABSTRACT:
The present invention relates to a two stage oxidative system for the disinfection of material which may contain nitrogen commonly in the form of ammonia or ammonium as in the treatment of waste or sewage plant effluent by adding a primary oxidizing agent to the effluent to disinfect as well as to lower the pH of the effluent and by adding a secondary oxidizing agent to produce a synergistic disinfection system in which the distribution of ammonium and ammonia is shifted to nearly all ammonium. A desirable pH level is 7 or less with desirable primary oxidizing agents including aluminum chloride or ferric chloride with desirable secondary oxidizing agents including chlorine, chlorine dioxide, ozone as in oxygen or air, or sodium hypochlorite. The invention further relates to an activated sludge aeration system in which desirably there are no stagnant areas and maximum diffusion is achieved, efficiently.
The invention further relates to a continuous treatment of a fluid by chemical reaction with a treating fluid as in an in-line reactor.
The invention also relates to the efficient production of ozone by varying the oxygen feed rate, voltage, current or frequency or the ozone in oxygen concentration.
The invention also relates to the enrichment of oxygen by adding air to a high-pressure holding tank containing a liquid in which oxygen is soluble, bleeding off nitrogen-rich gas and desorbing gas from the liquid at a lower pressure.
REFERENCES:
patent: 1094731 (1914-04-01), Linden
patent: 1658974 (1928-02-01), De Laporte et al.
patent: 2988221 (1961-06-01), Culp
patent: 3139402 (1964-06-01), Armbrust
patent: 3401115 (1968-09-01), Meyer et al.
patent: 3422010 (1969-01-01), Case
patent: 3733266 (1973-05-01), Bishop et al.
patent: 3804755 (1974-04-01), Cervantes
Sewerage and Sewage Treatment, 8th Edition, Babbitt and Baumann, 1958, Wiley.
Hart Charles N.
Spitzer Robert H.
TII Corporation
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