Method for water treatment by flocculation/settling using...

Details Method for water treatment by flocculation/settling using... Method for water treatment by flocculation/settling using...

2007-02-19

2011-11-22

Hruskoci, Peter A (Department: 1778)

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

C210S711000, C210S713000, C210S714000, C210S727000, C210S740000

Reexamination Certificate

active

08062529

ABSTRACT:
A method for treating water includes directing untreated water into a mixing zone in a water treatment system and mixing the untreated water with a flocculating agent and a ballast to form a ballast-floc mixture. Thereafter, the ballast-floc mixture is directed to a settling zone where the mixture settles to form sludge. Treated water is discharged from the settling zone and the sludge is directed to a separator. The method further includes separating at least a portion of the ballast from the sludge and directing the separated ballast from the separator to the mixing zone. Finally, the sludge is directed from the separator to a sludge treatment reactor where at least some of the remaining ballast settles from the sludge and substantially ballast-free sludge is discharged from the sludge treatment reactor.

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