Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Responsive to fluid flow
Patent
1978-07-18
1980-02-12
Hart, Charles N.
Liquid purification or separation
With alarm, indicator, register, recorder, signal or...
Responsive to fluid flow
210 14, 210 17, 210 63R, 210 64, 210DIG28, 210DIG29, C02C 108, C02C 140
Patent
active
041882890
ABSTRACT:
A purification process for removal of suspended solids, carbonaceous material, nitrogenous material, phosphorus, refractory organics, bacteria and viruses comprises of combining and carrying out the various biochemical and chemical reactions and separation of the suspended solids in a single sludge system in a simplified process sequence suitable for use in a single reaction tank.
The biooxidation, nitrification, denitrification and chemical precipitation processes are carried out in presence of mixed microbial population entrapped into fluidized nonbiodegradable suspended solids with portion of the fluidized suspended solids circulating through three reaction zones having varying concentration of disolved oxygen to maintain environmental conditions to support growth of the microbial population and simultaneously to maintain operating conditions required to carry out the involved reactions.
The fluidized suspended solids entrap the active microorganisms, colloidal matter and suspended solids present in the incoming waste water and/or generated during purification of the waste water, improve the settling properties of the resulting sludge and enhance separation of suspended solids from the purified waste water.
The concentration of the active microbial population in this purification process is significantly higher than that achieved by the prior art processes resulting in better performance, more efficient removal of pollutants and reduced treatment costs. The followed chemical oxidation provides for removal of remaining impurities and killing of bacteria and viruses.
REFERENCES:
patent: Re27721 (1973-08-01), Klock
patent: 3700590 (1972-10-01), Burton
patent: 3803029 (1974-04-01), Blecharczyk
patent: 3878097 (1975-04-01), Mochizuki
patent: 3907673 (1975-09-01), Belk et al.
patent: 3980556 (1976-09-01), Besik
patent: 4008159 (1977-02-01), Besik
patent: 4009099 (1977-02-01), Jeris
patent: 4076615 (1978-02-01), Olesen et al.
patent: 4104167 (1978-08-01), Besik
Hart Charles N.
Therkorn Ernest G.
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