Evaluation of modified clay coagulant for sewage treatment

Jia-Qian Jiang*, Zhiqiang Zeng, Pete Pearce

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)


The use of modified clays as coagulants for sewage treatment was investigated in this study. The raw clays were montmorillonites K10 and KSF, and were modified by polymeric Al or Fe and/or Al/Fe mixing polymeric species. The comparative performance of modified clays and aluminium sulphate and ferric sulphate were evaluated in terms of the removal of turbidity, suspended solids, UV254-abs, colour, and total and soluble CODs. The results demonstrated that after being modified with mixing polymeric Al/Fe species, two montmorillonite clays possess greater properties to remove the particles (as suspended solids) and organic pollutants (as COD and UV254-abs) from the sewage and to enhance the particle settling rate significantly.

Original languageEnglish
Pages (from-to)181-185
Number of pages5
Issue number2
Early online date16 Apr 2004
Publication statusPublished - Jul 2004
Externally publishedYes


  • Clay
  • Coagulation
  • Modification
  • Sewage and wastewater treatment

ASJC Scopus subject areas

  • Environmental Engineering
  • Environmental Chemistry
  • Chemistry(all)
  • Pollution
  • Health, Toxicology and Mutagenesis


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