Distillation: processes – separatory – Water purification only – Under pressure or vacuum
Patent
1979-02-22
1980-12-02
Hart, Charles N.
Distillation: processes, separatory
Water purification only
Under pressure or vacuum
159 47WL, 202174, 202182, 203 25, 203 39, 210 63R, 210 73R, 210182, 431210, B01D 300, C02F 104
Patent
active
042369746
ABSTRACT:
A process and apparatus for purifying waste water which comprises introducing said waste water into a separation zone, removing a portion of the impurities recovered from said separation zone, and concentrating said impurities by their introduction into an evaporation system to form a still fluid residue and remaining impurities composed of impurities in gaseous and vapor form together with waste vapors, transferring said remaining impurities to an oxidation chamber, and supplying said oxidation chamber with heat and air, thereby oxidizing said remaining impurities through spontaneous combustion, wherein the proportion of the low boiling-point impurities in the waste water introduced into the separation zone is adjusted to a predetermined value.
REFERENCES:
patent: 2944396 (1960-07-01), Barton et al.
patent: 3243359 (1966-03-01), Schmidt
patent: 3296125 (1967-01-01), Hegner
patent: 3668120 (1972-06-01), Patterson
patent: 3741890 (1973-06-01), Smith et al.
patent: 3804756 (1974-04-01), Callahan et al.
patent: 3855076 (1974-12-01), Marecaux
patent: 4017421 (1977-04-01), Othmer
Hart Charles N.
HCH. Bertrams Aktiengesellschaft
Hruskoci Peter A.
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