气候变化领域集成服务门户(CCPortal): Benefits and drawbacks of food and dairy waste co-digestion at a high organic loading rate: A Moosburg WWTP case study

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DOI	10.1016/j.wasman.2019.06.008
	Benefits and drawbacks of food and dairy waste co-digestion at a high organic loading rate: A Moosburg WWTP case study
	Sembera C.; Macintosh C.; Astals S.; Koch K.
发表日期	2019
ISSN	0956053X
起始页码	217
结束页码	226
卷号	95
英文摘要	Anaerobic co-digestion (AcoD) is a key technology in reframing organic waste as a viable energy source. A lack of documented experience on full-scale AcoD at wastewater treatment plants (WWTPs) has created a bottleneck in AcoD implementation, which is further tightened by the focus of existing AcoD studies being on low co-substrate loading (<50%) and the obtainable benefits. This study aims to fill this gap by investigating the drawbacks and benefits of high-ratio co-substrate dosing of food and dairy wastes at the Moosburg WWTP (Germany) from 2014 to 2017. The Moosburg WWTP co-digests sewage sludge, food waste, and dairy wastes at a 35:47:18 ratio by volatile solids (organic loading rate (OLR) of 3.0 kgVS/(m3·day)). During the study period, this high co-substrate dosing increased the methane potential by 300 ± 50%. The corresponding high methane yield significantly increased the on-site electricity production, resulting in energy neutrality in 2014–2015. The corresponding economic gain from gate fees was 48,000 ± 5,000 € per year. The observed drawbacks included solids accumulation inside the digester (5 m3/month), high nitrogen backload (65% increase from co-substrate addition), reduced retention time (loss of 1.18 days/year from solids accumulation), and reduced dewaterability. The high nitrogen content in the centrate is treated by sequential batch reactors (SBRs), using lactose as the carbon source for denitrification. This study presents an alternative approach for determining gate fees based on the economic gains from inherent methane content, which identified waste milk, lactose and grease trap sludge as the most profitable co-substrates. Elsevier Ltd
英文关键词	Anaerobic codigestion; Food waste; Full-scale case study; Gate fees; Sewage sludge; Wastewater treatment plant
scopus关键词	Agricultural wastes; Anaerobic digestion; Batch reactors; Dairies; Methane; Nitrogen; Sewage pumping plants; Sewage sludge; Substrates; Sugars; Wastewater treatment; Water treatment plants; Anaerobic co-digestion; Food waste; Full-scale case study; Gate fees; Wastewater treatment plants; Loading; lactose; methane; nitrogen; anaerobic digestion; dairy farming; denitrification; economic analysis; food waste; profitability; reaction kinetics; sewage; sludge; substrate; wastewater treatment plant; anaerobic co digestion; Article; bioaccumulation; carbon source; dairy waste; denitrification; energy balance; food waste; Germany; high organic loading rate; milk; priority journal; retention time; sewage; sludge drying; trend study; waste and waste related phenomena; waste water treatment plant; anaerobic growth; bioreactor; sewage; waste water; Germany; Anaerobiosis; Bioreactors; Germany; Methane; Sewage; Waste Water
来源期刊	Waste Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/176192
作者单位	Chair of Urban Water Systems Engineering, Technical University of Munich, Am Coulombwall 3, Garching, 85748, Germany; Advanced Water Management Centre, The University of Queensland, St Lucia, Queensland 4067, Australia; Department of Chemical Engineering and Analytical Chemistry, University of Barcelona, C/Martí i Franquès 1, Barcelona, 08028, Spain
推荐引用方式 GB/T 7714	Sembera C.,Macintosh C.,Astals S.,et al. Benefits and drawbacks of food and dairy waste co-digestion at a high organic loading rate: A Moosburg WWTP case study[J],2019,95.
APA	Sembera C.,Macintosh C.,Astals S.,&Koch K..(2019).Benefits and drawbacks of food and dairy waste co-digestion at a high organic loading rate: A Moosburg WWTP case study.Waste Management,95.
MLA	Sembera C.,et al."Benefits and drawbacks of food and dairy waste co-digestion at a high organic loading rate: A Moosburg WWTP case study".Waste Management 95(2019).