Activated sludge has been reported to reduce successfully both organic content and toxicity in effluents originating from chemi-thermo-mechanical pulping (CTMP) mills. The wastewater entering the treatment facility consists of a combination of waste streams derived from various stages of the process. / Activated sludge treatment is sensitive to various operating conditions, including waste stream composition. Changes in operating conditions will affect the treatment process kinetics. The effect of effluent variation was examined using both mathematical modelling and experimental investigation. Mathematical modelling was used to identify the rate parameters having the most significant effect on the system when varied. Experimental studies considered three different CTMP effluents (lean white water, chip wash water and inter-stage wash) and the total mill effluent in order to investigate the actual observed effects of effluent variation. Only the inter-stage wash was found to produce an inhibitory effect, while the other two effluents produced a non-inhibitory effect.
| Identifer | oai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:QMM.27218 |
| Date | January 1997 |
| Creators | Domnik, Corinna S. |
| Contributors | Berk, D. (advisor) |
| Publisher | McGill University |
| Source Sets | Library and Archives Canada ETDs Repository / Centre d'archives des thèses électroniques de Bibliothèque et Archives Canada |
| Language | English |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
| Format | application/pdf |
| Coverage | Master of Engineering (Department of Chemical Engineering.) |
| Rights | All items in eScholarship@McGill are protected by copyright with all rights reserved unless otherwise indicated. |
| Relation | alephsysno: 001571414, proquestno: MQ29591, Theses scanned by UMI/ProQuest. |
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