<p> The Biological Aerated Filter is a novel biological wastewater
treatrrent process consisting of.an activated sludge zone followed by
an unstratified sand filter for solids separation. Three evaluation
studies of the BAF to date have yielded results indicating low solids
production or possibly total oxidation. On the basis of these studies,
Tymflo Process Limited, the patent holding corrpany, clairred up to
50% cost savings for wastewater.treabrent as there would be no excess
biological solids produced, and therefore no sludge disposal costs.
The object of this report was to evaluate the BAF capabilities to treat
degritted municipal sewage with respect to the above claims.
Two pilot scale BAF units were operated at the Canada Centre
for Inland Waters continuously for 97 days treating degritted Burlington
Skyway sewage at various operating conditions. The conclusions of the
tests are that the BAF cannot be operated as a total solids retention
system treating degritted nnmicipal sewage on a 24 hour cycle at a
12 hour hydraulic detention ti.Ile. The inert fraction of the influent
is retained in the system resulting in high mixed liquor concentrations
which overload the filter thereby decreasing treatrrent tine. The
system is capable of 88% CDD rerroval, essentially corrplete nitrification
and 97% SS rerroval. The system yields are in the order of 0.24 gm
MLVSS/grn COD rercoved at organic loadings of approximately 0.08 gm COD removed/gm MLVSS day. </p> / Thesis / Master of Engineering (MEngr)
| Identifer | oai:union.ndltd.org:mcmaster.ca/oai:macsphere.mcmaster.ca:11375/18549 |
| Date | 01 1900 |
| Creators | Kus, John |
| Contributors | Murphy, K.L., Civil Engineering |
| Source Sets | McMaster University |
| Language | English |
| Detected Language | English |
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