A new post-treatment system for anaerobic effluents containing a high Ca2+ content

J.C.T. Vogelaar, F. van der Wal, G. Lettinga

Research output: Contribution to journalArticleAcademicpeer-review

2 Citations (Scopus)

Abstract

A novel reactor concept has been developed that combines Ca2 removal and BOD conversion under mesophilic (30 °C ) as well as under thermophilic (55 °C ) conditions. Soluble Ca2 , present in many industrial wastewaters, precipitates as a result of forced aeration in the aerobic bioreactor. The CaCO3 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.
Original languageEnglish
Pages (from-to)1981-1986
JournalBiotechnology Letters
Volume24
DOIs
Publication statusPublished - 2002

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