Drinking water denitrification by a membrane bio-reactor

Water Research
Alper NuhoglG Akay

Abstract

Drinking water denitrification performance of a bench scale membrane bio-reactor (MBR) was investigated as function of hydraulic and biological parameters. The reactor was a stirred tank and operated both in batch and continuous mode. The mixed denitrifying culture used in the batch mode tests was derived from the mixed liquor of a wastewater treatment plant in Erzincan province in Turkey. But the culture used in the continuous mode tests was that obtained from the batch mode tests at the end of the denitrification process. The nitrate contaminated water treated was separated from the mixed liquor suspended solids (MLSS) containing active mixed denitrifying culture and other organic substances by a membrane of 0.2 microm average pore diameter. The results indicated that the use of a membrane module eliminated the need for additional post treatment processes for the removal of MLSS from the product water. Concentration of nitrite and that of MLSS in the membrane effluent was below the detectable limits. Optimum carbon to nitrogen (C/N) ratio was found to be 2.2 in batch mode tests. Depending on the process conditions, it was possible to obtain denitrification capacities based on the reactor effluent and membrane effluent up to 0...Continue Reading

References

Dec 1, 1973·Bacteriological Reviews·W J Payne

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Citations

May 1, 2004·Environmental Technology·Y X ChenG H Chen
Apr 8, 2014·Applied Biochemistry and Biotechnology·Zeinab Akbari Shahabi, Fereshteh Naeimpoor
Jan 1, 2012·Journal of Environmental Sciences (China)·Sheriff AdewuyiOlujinmi M Folarin
Mar 31, 2015·Journal of Environmental Management·M I Bautista-ToledoF J Maldonado-Hódar
Nov 29, 2012·Bioresource Technology·Matjaž RavnjakAlbin Pintar
Sep 22, 2016·Applied Spectroscopy·Johannes KieferEric von Lieres
Mar 9, 2017·Water Science and Technology : a Journal of the International Association on Water Pollution Research·A BoleyS Richter
Jun 3, 2021·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·M Isidora Bautista-ToledoLuisa M Pastrana-Martínez

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