Patent · US Expired

Water clarification/purification

US5171453A · kind A · utility

13Cited by
7References
11Claims
0Family size

Assignee

Inventor

Key dates

Filing dateJul 11, 1991
Grant dateDec 15, 1992
Priority date
Expiry dateJul 11, 2011

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC02F1/5245
  • WIPO fieldEnvironmental technology
  • WIPO sectorChemistry

Abstract

Aqueous media, e.g., surface or waste waters, or industrial effluents, are clarified/purified, notably to markedly reduce the residual aluminum and organic solids contents thereof, by treating same, advantageously sequentially, with an effective impurity coagulating amount of at least one aluminum polymer and at least one ferric salt.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.