专利名称:Treatment of liquids with ballasted
flocculation
发明人:Philip Streat申请号:US09845905申请日:20010430公开号:US06517714B2公开日:20030211
专利附图:
摘要:In the typical embodiments disclosed in the specification, a ballasted
flocculation liquid treatment arrangement includes a mixing chamber in which liquid to betreated, flocculating agents and granular material are mixed. The mixture is supplied to
the bottom of a flocculating chamber adjacent to the mixing chamber through anopening in a common wall between the chambers and is maintained in suspension in theflocculating chamber by turbulence generated by a rotating blade array. Ballasted flocsare transferred from the flocculation chamber to an adjacent sludge tank through a firstopening in a common wall between them and liquid which contains lighter flocs isreturned to the flocculation chamber through a second opening in the common wall.Liquid from the flocculation chamber passes upwardly through a turbulence controlarrangement where flocs and particulates are substantially removed and into a
clarification chamber where clarified liquid is passed over a weir to an outlet. Sludge andgranular material from the bottom of the sludge tank are conveyed by an airlift to acleaning device above the mixing chamber where the granular material is cleaned andreturned to the mixing chamber while sludge is carried away through a disposal outlet.
申请人:PARKSON CORPORATION
代理机构:Baker Botts, LLP
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