Pilot treatment of wastewater from Dioscorea zingiberensis C.H. Wright production by anaerobic digestion combined with a biological aerated filter

• Published in: Bioresource technology Vol. 100; no. 12; pp. 2918 - 2925
• Main Authors: Cheng, Peng, Zhao, Huazhang, Zhao, Bin, Ni, Jinren
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 01.06.2009; [New York, NY]: Elsevier Ltd; Elsevier
• Subjects: activated sludge; Air; ammonia; anaerobic digestion; Anaerobiosis - physiology; Applied sciences; biodegradation; biofilters; Biological aerated filter (BAF); Biological and medical sciences; Biological treatment of sewage sludges and wastes; Bioreactors - microbiology; Biotechnology; chemical oxygen demand; denitrification; detoxification (processing); Dioscorea; Dioscorea - metabolism; Dioscorea zingiberensis; Dioscorea zingiberensis C.H. Wright (DZW); diosgenin; Environment and pollution; Equipment Design; Equipment Failure Analysis; Exact sciences and technology; Filtration - instrumentation; Fundamental and applied biological sciences. Psychology; Industrial applications and implications. Economical aspects; industrial effluents; Industrial Waste - analysis; Industrial Waste - prevention & control; medicinal plants; Modified two-phase anaerobic digestion (MTPAD); nitrification; phytochemicals; Pilot Projects; Pilot-scale study; plant extracts; Pollution; steroid saponins; Systems Integration; Wastewater treatment; Wastewaters; Water Pollutants, Chemical - isolation & purification; Water Pollutants, Chemical - metabolism; Water Purification - instrumentation; Water treatment and pollution; Modified two-phase anaerobic digestion (MTPAD); Wastewater treatment; Biological aerated filter (BAF); Pilot-scale study; Dioscorea zingiberensis C.H. Wright (DZW); Monocotyledones; MTPAD; Modified two-phase anaerobic digestion; Anaerobic digestion; Dioscoreaceae; Waste water; Pilot plant scale; Aeration; Angiospermae; Dioscorea; Pilot test; Herbaceous plant; Spermatophyta; Biofilter; Waste water purification
• ISSN: 0960-8524; 1873-2976
• DOI: 10.1016/j.biortech.2009.01.054

An efficient combined system based on modified two-phase anaerobic digestion (MTPAD) combined with a biological aerated filter (BAF) is proposed to treat wastewater generated in the production of Dioscorea zingiberensis C.H. Wright (DZW). The pilot-scale experiments showed that both organics and sulfates at high concentrations could be removed satisfactorily due to the advantages of the MTPAD in eliminating the negative effects of sulfide inhibition to methanogens. Simultaneous nitrification and denitrification (SND) in the BAF resulted in efficient removal of COD and NH 4 + – N . UV–vis analysis showed that the organic compounds with aromatic structures were biodegraded effectively in the anaerobic process. GC–MS analysis revealed that furfural compounds in the influent were also biodegraded, leaving fewer compounds remaining in the final biological effluent. High efficiencies of COD removal (99.3%) and NH 4 + – N removal (93.7%) were achieved, and the quality of the final effluent met the National Discharge Standards of China for DZW wastewater.