NOM Removal by Coagulation

Mika Sillanpää, Anu Matilainen

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

29 Citations (Scopus)


The presence of natural organic matter (NOM) causes various problems in drinking water and drinking water treatment processes, including (1) negative effect on water quality by causing color, taste, and odor problems, (2) increased coagulant and disinfectant doses (which in turn results in increased sludge volumes and production of harmful disinfection by-products), (3) promoted biological growth in distribution system, and (4) increased levels of complexed heavy metals and adsorbed organic pollutants. NOM can be removed from drinking water through the use of several treatment options, of which the most common and economically feasible processes are considered to be coagulation and flocculation followed by sedimentation/flotation and sand filtration. Most of the NOM can be removed by coagulation, although the hydrophobic fraction and high molar mass compounds of NOM are removed more efficiently than hydrophilic fraction and the low molar mass compounds. Thus, enhanced and/or optimized coagulation, as well as new process alternatives for better removal of NOM by coagulation, have been suggested. In this chapter, we present an overview of the recent research dealing with coagulation and flocculation in the removal of NOM from drinking water.

Original languageEnglish
Title of host publicationNatural Organic Matter in Water
Subtitle of host publicationCharacterization and Treatment Methods
PublisherElsevier Inc.
Number of pages26
ISBN (Electronic)9780128017197
ISBN (Print)9780128015032
Publication statusPublished - 2015
Externally publishedYes


  • Coagulation
  • Drinking water
  • NOM
  • Natural organic matter
  • Water treatment

ASJC Scopus subject areas

  • General Engineering
  • General Environmental Science


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