A New Post-Treatment System for Anaerobic Effluents Containing a High Ca super(2+) Content

A novel reactor concept has been developed that combines Ca super(2+) removal and BOD conversion under mesophilic (30 degree C) as well as under thermophilic (55 degree C) conditions. Soluble Ca super(2+), present in many industrial wastewaters, precipitates as a result of forced aeration in the aer...

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Bibliographic Details
Published inBiotechnology letters Vol. 24; no. 23; pp. 1981 - 1986
Main Authors Vogelaar, J C T, van der Wal, F, Lettinga, G
Format Journal Article
LanguageEnglish
Published 01.12.2002
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Summary:A novel reactor concept has been developed that combines Ca super(2+) removal and BOD conversion under mesophilic (30 degree C) as well as under thermophilic (55 degree C) conditions. Soluble Ca super(2+), present in many industrial wastewaters, precipitates as a result of forced aeration in the aerobic bioreactor. The CaCO sub(3) precipitates, in turn, act as a carrier material for biofilm growth. This resulted in dense rapidly settling sludge granules covered with a biofilm on the surface. These sludge characteristics facilitate the application of hydraulic retention times of 1 h while maintaining a high biological activity in the reactor.
Bibliography:ObjectType-Article-2
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content type line 23
ISSN:0141-5492