An integrated rotating biological contactor and membrane separation process for domestic wastewater treatment

Autor: Sharjeel Waqas, Muhammad Roil Bilad, Zakaria B. Man, Chalida Klaysom, Juhana Jaafar, Asim Laeeq Khan
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: Alexandria Engineering Journal, Vol 59, Iss 6, Pp 4257-4265 (2020)
Druh dokumentu: article
ISSN: 1110-0168
DOI: 10.1016/j.aej.2020.07.029
Popis: Membrane fouling is a major bottleneck of almost all pressure-driven membrane filtration processes that limits their widespread applications. Improvement of hydrodynamics conditions is one of the most effective methods for membrane fouling control. This paper assesses a rotating biological contactor (RBC) integrated with membrane (RBC-MI) filtration that potentially offers inherent membrane fouling control as well as enhances biological performance, in which the membrane is placed inside the RBC bioreactor. Results show that the RBC-MI system achieves 84% of COD, 96.7% ammonium, 74% total nitrogen, 89% total phosphorus, and 96% turbidity removals. The integration of membrane placed inside the bioreactor doubles the permeability as compared to the external placement. Higher hydraulic performance is achieved at the low membrane-to-disk gap and higher disk rotational speed. The energy analysis shows that the RBC-MI consumes only 0.18 kWhm−3 signifying its viability as promission option to the energy-intensive conventional treatment systems.
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