Effects of calcium ion on sludge conditioning

Min Chao Chang, Shun Hsing Chuang, Hui Ling Lin

Research output: Contribution to journalConference articlepeer-review

11 Scopus citations


Investigating the sludge conditioning behavior and improving sludge conditionability were the primary objectives of this study. The effects of calcium ion with and without polyelectrolyte conditioning behavior on two industrially activated sludge systems were studied via Capillary Suction Time (CST) tests. Experimental results indicated that the calcium ion can strongly enhance the conditionability of the industrial biological sludge system. The good conditionability of calcium ion added system could have possibly resulted from the interaction of polysaccaride from activated sludge with calcium ion. Additionally, adding polyelectrolyte solution first would produce more suitable conditioning in a situation in which calcium ion is involved with polyelectrolyte system.

Original languageEnglish
Pages (from-to)217-222
Number of pages6
JournalWater Science and Technology
Issue number8
StatePublished - 1997
EventProceedings of the 1995 5th IAWQ Asian Regional Conference on Water Quality and Pollution Control - Manila, Philippines
Duration: 7 Feb 19959 Feb 1995


  • Calcium ion
  • Capillary suction time
  • Conditionability
  • Dyeing and finishing plant sludge
  • Polyelectrolytes
  • Sauce production plant sludge
  • Sludge conditioning


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