Treatment of an NSSC effluent in a biological high-efficiency compact reactor
In: Tappi journal, Jg. 83 (2000), Heft 1
academicJournal
- print, 44 ref
Zugriff:
A full-scale, aerobic, compact reactor was used in a biological treatment plant to remove organic material from the effluent of a mill producing aspen pulp in a neutral sulfite semichemical process. The entire biological treatment plant showed high removal efficiencies for the total organic material in the wastewater, removing 65% COD and 93% BOD5. For filtered samples, the removal rates were 70% COD and 97% BOD5. The bioreactor removal efficiencies were 99% for identified extractives, 96% for acetates, and 80% for carbohydrates. The removal efficiency for lignin-like material measured by UV absorption was only 15%. The compact treatment system reduced the toxicity of the effluent by 99% and >93% towards the Microtox test bacteria and the Daphnia magna water flea, respectively. The main cause of the toxicity was C18-fatty acids. Application : in more than 20 installations, high-efficiency compact reactors have performed extremely well with respect to space, time, and yield and in regard to energy requirements. Other advantages are a low sludge volume index and a low production of surplus sludge.
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Treatment of an NSSC effluent in a biological high-efficiency compact reactor
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Autor/in / Beteiligte Person: | MAGNUS, E ; HOEL, H ; CARLBERG, G. E |
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Zeitschrift: | Tappi journal, Jg. 83 (2000), Heft 1 |
Veröffentlichung: | Norcross, GA: TAPPI, 2000 |
Medientyp: | academicJournal |
Umfang: | print, 44 ref |
ISSN: | 0734-1415 (print) |
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