Field determination of bacterial disappearance in seawater

Poul Harremoës

Research output: Contribution to journalJournal articleResearchpeer-review


The article presents two approaches to field determination of disappearance of viable, fecal bacteria after discharge with sewage into a marine environment. The first approach is based on simultaneous sampling for bacterial counting and monitoring of dilution using a conservative tracer, which is released continuously with the sewage. The second approach uses an abrupt release of tracer for determination of both dilution and residence time in the sewage field. In both cases, the disappearance rate is best determined by comparison of fluxes of two bacteria and of tracer through cross-sections of the field. The approaches are exemplified with two case reports, which show that the disappearance rate can be determined to less than 10 per cent inaccuracy.
Original languageEnglish
JournalWater Research
Pages (from-to)737-749
Publication statusPublished - 1970

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