Review on hybrid energy systems for wastewater treatment and bio-energy production

Mohammad Omar, Abdullah and Pei, FangTee and Ivy Tan, Ai Wei and Nur Khairunnisa, Abdul Rashid and Mohamed Afizal, Mohamed Amin and Cirilo, Nolasco-Hipolito and Kopli, Bujang (2016) Review on hybrid energy systems for wastewater treatment and bio-energy production. Renewable and Sustainable Energy Reviews, 54 (1). pp. 235-246. ISSN 1364-0321

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Abstract

Access to clean water has been a great challenge around the globe due to the high pollutant contents in the water. Therefore, there is a high demand of freshwater resources or a dire need of clean recycle wastewater as a new source of water supply. In order to accomplish this, new concept or engineering systems need to be developed where hybrid wastewater treatment system can be an effective pollutants removal. Wastewater contains energy in the form of biodegradable organic matter. The concept of accomplishing wastewater treatment and generate energy simultaneously has been a trend recently and can be done with hybrid wastewater treatment system. Energy gained from such hybrid system is therefore both sustainable and environmental friendly which may be good source of bio-energy to compliment the power of a treatment plant. In this paper, we classify hybrid wastewater systems typically include physical-biological hybrid, physical-chemical hybrid, chemical-biological hybrid and physical-chemical-biological hybrid system. From the detailed literature gathered thus far, hybrid systems demonstrated some potential advantages compared to stand-alone systems such as: more stable and sustainable in the voltage generated, better overall treatment efficiency and energy savings. © 2015 Elsevier Ltd. All rights reserved.

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