Liquid purification or separation – Processes – Treatment by living organism
Patent
1978-12-28
1980-09-30
Castel, Benoit
Liquid purification or separation
Processes
Treatment by living organism
210151, 2101951, 210202, 210206, 210624, 210760, 210627, C02C 506, C02C 510
Patent
active
042254310
ABSTRACT:
A process and apparatus for the treatment of aqueous waste materials or effluents, particularly the aqueous waste materials of bottling plants and installations, in which a trickling element is employed for the basic rough processing to effect the removal of biological oxygen demand (BOD). The discharge stream of effluent from the trickling element is conveyed into an oxidation-reaction tank, providing for the chemical oxidation of light organic floc resulting from biological action in the trickling element and further BOD reduction, and for the oxidation of any biomass sloughing off the media in the trickling element. The treated waste material or effluent discharge emanating from the oxidation-reaction tank is conducted through a mixing tank which is adapted to simultaneously receive the final rinse waste effluent from the bottling plant, and to intermix the two effluents and subject these to further oxidation treatment through the intermediary of admixing air therewith. The effluent from the mixing tank is conveyed into an aeration tank which provides for a lengthy period of detention and a circuitous flow path of the effluent so as to subject the waste material or effluent stream conducted therethrough to the maximum extent of aeration. A settling tank is adapted to receive light organic floc resulting from the aeration process in the aeration tank, and separate the waste material or effluent into a liquid portion and a solids-containing portion. A solids separator is adapted to receive an effluent comprising the solids-containing portion of the effluent from the settling tank and, additionally, any solids from backwash water from the bottling plant or water treatment recycling system.
REFERENCES:
patent: 3403095 (1968-09-01), Chipperfield et al.
patent: 3546114 (1970-12-01), Dietz et al.
patent: 3660277 (1972-05-01), McWhirter et al.
patent: 3794582 (1974-02-01), Lackme et al.
patent: 4007118 (1977-02-01), Ciambrone
patent: 4008159 (1977-02-01), Besik
patent: 4080287 (1978-03-01), Conway et al.
patent: 4132637 (1979-01-01), Key et al.
Castel Benoit
PepsiCo Inc.
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