Preliminary evaluation of the performance of new pre-polymerised inorganic coagulants for lowland surface water treatment

Jia-Qian Jiang*, Nigel J.D. Graham

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

41 Citations (Scopus)

Abstract

This paper is concerned with the performance of relatively new kinds of pre-polymerised inorganic coagulants, poly-alumino-iron-sulphate (PAFS) and polyferric sulphate (PFS). Laboratory experiments were undertaken to evaluate the PAFS and PFS, in comparison with conventional coagulants such as ferric sulphate (FS) and aluminium sulphate (AS), for the coagulation of algal-type model waters and a lowland surface water containing algae and natural organic matter (NOM). Experimental results demonstrated that under the conditions studied, the performance of pre-polymerised coagulants were consistently superior to conventional coagulants (i.e., FS and AS). This is attributed to the presence of a range of pre-formed polymerised species. The coagulation mechanism of PAFS and PFS has been discussed in the paper.

Original languageEnglish
Pages (from-to)121-128
Number of pages8
JournalWater Science and Technology
Volume37
Issue number2
DOIs
Publication statusPublished - 1 Jan 1998
Externally publishedYes

Keywords

  • Algae
  • coagulation
  • fractionation
  • humic/non-humic substances
  • molecular size (MS)
  • natural organic matter (NOM)
  • poly-aluminio-iron sulphate (PAFS)
  • polyferric sulphate (PFS)
  • pre-polymerised coagulants

ASJC Scopus subject areas

  • Environmental Engineering
  • Water Science and Technology

Fingerprint

Dive into the research topics of 'Preliminary evaluation of the performance of new pre-polymerised inorganic coagulants for lowland surface water treatment'. Together they form a unique fingerprint.

Cite this