Liquid purification or separation – Recirculation – Serially connected distinct treating or storage units
Patent
1991-02-28
1992-06-23
Silverman, Stanley S.
Liquid purification or separation
Recirculation
Serially connected distinct treating or storage units
210202, 210 21, 2105123, 210 5, 210197, 209160, B01D 2126, B01D 4512
Patent
active
051240343
ABSTRACT:
New systems for the purification of liquids containing suspended solids and/or dissolved solid materials basically include a conical flocculator unit and a conjoined conical clarifier unit. The flocculator has a cylindrical lower portion, frustum middle portion and large diameter cylindrical top portion while the clarifier is essentially a large diameter cylindrical top portion over a lower frustum portion. Water or other liquid to be purified enters the flocculator lower portion via opposed, unequally sized nozzles to assume a helical flow upward past a series of deflector plates positioned at the top of the lower flocculator portion while a sludge blanket forms therein. A double flume plus slot arrangement located at the junction of the flocculator with the clarifier separates solids from liquid as fluid flow from the flocculator passes into the clarifier where it is subjected to further separation of sludge from clarified liquid with part of the sludge being recycled to the flocculator. New purification methods operated with the new systems are also disclosed.
REFERENCES:
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patent: 4372766 (1983-02-01), Andrepont
patent: 4726686 (1988-02-01), Wolf et al.
Brochure "Densa Deg High Rate Clarifier and Thickener", Infilco Degremont Inc., Mar. 1990 New Information, No. DB-555.
Infilco Degremont Inc.
McCarthy Neil M.
Palmer Carroll F.
Silverman Stanley S.
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