ISSN:
1573-2932
Keywords:
biofilm
;
biological stability
;
drinking water
;
easily assimilable organic carbon (AOC)
;
materials
;
regrowth
Source:
Springer Online Journal Archives 1860-2000
Topics:
Energy, Environment Protection, Nuclear Power Engineering
Notes:
Abstract Regrowth processes in drinking water distribution systems may lead to hygienic, aesthetic and technical problems. These complex processes depend on interactions between micro-organisms and (i), compounds serving as energy sources; (ii), environmental conditions (temperature, hydraulics) and (iii), physico-chemical processes (sedimentation, corrosion, disinfection), respectively. The concentration of growth-promoting compounds is considered as the main driving force for regrowth and a large variety of tests has been developed to assess the growth-promoting properties of treated water. These methods range from determining the decrease of the concentration of dissolved organic carbon in a batch test to the assessment of the Biofilm Formation Rate (BFR) in a flow-through test. Biostability assessment of treated water in the Netherlands includes the AOC test in combination with the BFR test. The growth-promoting properties of synthetic materials in contact with treated water are determined with the Biofilm Formation Potential (BFP) test. A complete understanding of regrowth processes enabling to define appropriate control measures requires further research including: (i), the effect of reactive surfaces on the availability of slowly degradable compounds, and (ii), improvement of mathematical models describing regrowth processes.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1005288720291
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