A review of cyanobacteria and cyanotoxins removal/inactivation in drinking water treatment

Westrick, Judy A.; Szlag, David C.; Southwell, Benjamin J.; Sinclair, James
July 2010
Analytical & Bioanalytical Chemistry;Jul2010, Vol. 397 Issue 5, p1705
Academic Journal
This review focuses on the efficiency of different water treatment processes for the removal of cyanotoxins from potable water. Although several investigators have studied full-scale drinking water processes to determine the efficiency of cyanotoxin inactivation, many of the studies were based on ancillary practice. In this context, “ancillary practice” refers to the removal or inactivation of cyanotoxins by standard daily operational procedures and without a contingency operational plan utilizing specific treatment barriers. In this review, “auxiliary practice” refers to the implementation of inactivation/removal treatment barriers or operational changes explicitly designed to minimize risk from toxin-forming algae and their toxins to make potable water. Furthermore, the best drinking water treatment practices are based on extension of the multibarrier approach to remove cyanotoxins from water. Cyanotoxins are considered natural contaminants that occur worldwide and specific classes of cyanotoxins have shown regional prevalence. For example, freshwaters in the Americas often show high concentrations of microcystin, anatoxin-a, and cylindrospermopsin, whereas Australian water sources often show high concentrations of microcystin, cylindrospermopsin, and saxitoxins. Other less frequently reported cyanotoxins include lyngbyatoxin A, debromoaplysiatoxin, and β- N-methylamino- l-alanine. This review focuses on the commonly used unit processes and treatment trains to reduce the toxicity of four classes of cyanotoxins: the microcystins, cylindrospermopsin, anatoxin-a, and saxitoxins. The goal of this review is to inform the reader of how each unit process participates in a treatment train and how an auxiliary multibarrier approach to water treatment can provide safer water for the consumer.


Related Articles

  • Chapter 6: Small animals in drinking-water distribution systems. Evins, Colin // Safe Piped Water: Managing Microbial Water Quality in Piped Dist;1/1/2004, p101 

    Chapter 6 of the book "Safe Piped Water: Managing Microbial Water Quality in Piped Distribution Systems" is presented. It discusses the occurrence and significance of metazoan animals in the distribution systems of treated-drinking water. The limited information available on the relationship...

  • Bacteriological assessment of urban water sources in Khamis Mushait Governorate, southwestern Saudi Arabia. AlOtaibi, Eed L. Sh. // International Journal of Health Geographics;2009, Vol. 8, p1 

    Background: Urban water sources of Khamis Mushait Governorate, southwestern Saudi Arabia, were studied to assess their bacteriological characteristics and suitability for potable purposes. A cross-sectional epidemiological method was adopted to investigate the four main urban water sources (i.e....

  • Chapter 5: Precautions during construction and repairs. Ainsworth, Richard; Holt, David // Safe Piped Water: Managing Microbial Water Quality in Piped Dist;1/1/2004, p87 

    Chapter 5 of the book "Safe Piped Water: Managing Microbial Water Quality in Piped Distribution Systems" is presented. It focuses on the precautions during the construction and repair of water pipes. It identifies the contamination risks that are available during pipeworks. It emphasizes the...

  • Gut reaction.  // New Scientist;8/10/91, Vol. 131 Issue 1781, p16 

    Reports that the high bacteria count detected in Great Britain's tap water has prompted the Drinking Water Inspectorate to launch an inquiry. Growth of coliforms within the distribution system; Quality of water supplied by the privatized water businesses.

  • Enhanced physical and chemical processes by solid packing in the plasma reactor for the inactivation of Microcystis aeruginosa. Cui-hua Wang; Yan Wu; Guo-feng Li; Xin-qiang Shen // Desalination & Water Treatment;Oct2010, Vol. 22 Issue 1-3, p156 

    To investigate the effects of solid packing on the physical and chemical processes and the removal of cyanobacterium (Microcystis aeruginosa), the comparisons of properties of the plasma reactors with and without glass pellets and the algal removal efficiency in the plasma reactor were...

  • Low-risk cyanobacterial bloom sources: Cell accumulation within full-scale treatment plants. ZAMYADI, ARASH; DORNER, SARAH; NDONG, MOUHAMED; ELLIS, DONALD; BOLDUC, ANOUKA; BASTIEN, CHRISTIAN; PRÉVOST, MICHÈLE // Journal: American Water Works Association;Nov2013, Vol. 105 Issue 11, pE651 

    Toxic cyanobacteria in drinking water sources and within drinking water treatment plants (DWTPs) have been increasingly documented, even in regions with historically infrequent blooms. The main objective of the authors' research was to study the accumulation of potentially toxic cyanobacteria...

  • Trouble on tap? Downey, Michael // Better Nutrition;Jun2002, Vol. 64 Issue 6, p32 

    Investigates the quality and purity of ordinary drinking water in Canada. Contamination from lead water pipes; Attribution of cancer to chlorination disinfection byproducts; Fluoride content of Canadian tap water.

  • Muddy waters. Knowles, Chris // Harrowsmith Country Life (11908416);Dec93, Vol. 18 Issue 112, p9 

    Evaluates devices available to treat contaminated water. Contaminants in surface and groundwater supplies; House-hold water filtering systems; Advice on determining the type of water treatment a household needs; Drawbacks of some devices.

  • Mineralization of home RO water permeate. Aksenov, Alexey; Mitilineos, Alexander; Polyakov, Alexander; Shmidt, Joseph L. // Water Technology;Nov2015, Vol. 38 Issue 11, p24 

    The article focuses on the aspects of the hardness of the tap water and the role of reverse osmosis (RO) treatment in removing minerals in the water permeate considering toxins and impurities.


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics