Evaluation and characterization during the anaerobic digestion of high-strength kitchen waste slurry via a pilot-scale anaerobic membrane bioreactor
| Autor: | Wenquan Ruan, Zhenxing Huang, Mingxing Zhao, Xiaolan Xiao, Hongyan Ren, Hengfeng Miao, Lintao Yan |
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| Rok vydání: | 2015 |
| Předmět: |
Environmental Engineering
Sewage Waste management Renewable Energy Sustainability and the Environment Chemistry Membrane fouling Membranes Artificial Bioengineering Anaerobic membrane bioreactor General Medicine Wastewater Permeation Waste Disposal Fluid Water Purification Bioavailability Anaerobic digestion Bioreactors Digestion (alchemy) Slurry Anaerobiosis Waste Management and Disposal Anaerobic exercise Filtration |
| Zdroj: | Bioresource Technology. 193:234-242 |
| ISSN: | 0960-8524 |
| DOI: | 10.1016/j.biortech.2015.06.065 |
| Popis: | The anaerobic digestion of high-strength kitchen waste slurry via a pilot-scale anaerobic membrane bioreactor (AnMBR) was investigated at two different operational modes, including no sludge discharge and daily sludge discharge of 20 L. The AnMBR provided excellent and reliable permeate quality with high COD removal efficiencies over 99%. The obvious accumulations of long chain fatty acids (LCFAs) and Ca(2+) were found in the anaerobic digester by precipitation and agglomeration. Though the physicochemical process contributed to attenuating the free LCFAs toxicity on anaerobic digestion, the digestion efficiency was partly influenced for the low bioavailability of those precipitates. Moreover, higher organic loading rate (OLR) of 5.8 kg COD/(m(3) d) and digestion efficiency of 78% were achieved as the AnMBR was stably operated with sludge discharge, where the membrane fouling propensity was also alleviated, indicating the crucial significance of SRT control on the treatment of high-strength kitchen waste slurry via AnMBRs. |
| Databáze: | OpenAIRE |
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