Liquid purification or separation – Recirculation – Serially connected distinct treating or storage units
Patent
1990-12-28
1992-08-11
Silverman, Stanley S.
Liquid purification or separation
Recirculation
Serially connected distinct treating or storage units
210202, 210209, 210259, 210540, 210602, C02F 332
Patent
active
051376253
ABSTRACT:
A multi-stage active biological waste water treatment Apparatus. An anaerobic, sludge settling first lagoon or chamber has a distributed piping system providing multiple, spaced outlets for the inflow of waste water; the multiple outlets distribute the buildup of sludge within the anaerobic chamber, which otherwise tends to block influent pipe outlets, by shifting flow from one outlet pipe to the next as sludge builds up.
A controlled flow aspirator system then injects air into the odoriferous effluent from the anaerobic chamber as part of the natural water flow out of the anaerobic chamber into the first of a series of biological treatment chambers, without exposing the effluent to local surroundings.
Within an aerobic duckweed treatment chamber, a rotating effluent outflow pipe retains an effective biomass of duckweed for the treatment process, yet, as desired, removes a chosen quantity of this growing biomass for harvesting.
The final treated effluent, substantially free from fecal coliform bacteria, is then partially diverted and recirculated, being sprayed to form an upper layer of substantially pure, fecal coliform free, oxygenated water, covering the anaerobic waste water within the initial anaerobic chamber, eliminating release of odors.
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Norcross Alexander F.
Silverman Stanley S.
Upton Christopher
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