Browsing by Author "Wang, Yayi"

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Effect of influent nutrient ratios and hydraulic retention time (HRT) on simultaneous phosphorus and nitrogen removal in a two-sludge sequencing batch reactor process

Wang, Yayi; Peng, Yongzhen; Stephenson, Tom (Elsevier Science B.V., Amsterdam., 2009-07-01)

A laboratory-scale anaerobic–anoxic/nitrification sequencing batch reactor (A2N- SBR) fed with domestic wastewater was operated to examine the effect of varying ratios of influent COD/P, COD/TN and TN/P on the nutrient ...
Nitrous oxide emissions for early warning of biological nitrification failure in activated sludge.

Butler, Mark D.; Wang, Yayi; Cartmell, Elise; Stephenson, Tom (Elsevier Science B.V., Amsterdam., 2009-03-01)

Experiments were carried out to establish whether nitrous oxide (N2O) could be used as a non-invasive early warning indicator for nitrification failure. Eight experiments were undertaken; duplicate shocks DO depletion, ...

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