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Assessment of Biological Kinetics in a Conventional Municipal WWTP by Means of the Oxygen Uptake Rate Method
Torretta, Vincenzo; Ragazzi, Marco; Trulli, Ettore; … - In: Sustainability 6 (2014) 4, pp. 1833-1847
Pollution control of surface water bodies requires stringent checks on wastewater treatment plants performances. The satisfactory operation of biological treatment, commonly performed by means of activated sludge processes, requires a number of controlling and monitoring procedures. Suitable...
Persistent link: https://www.econbiz.de/10010757615
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Sustainability of Domestic Sewage Sludge Disposal
Rizzardini, Claudia Bruna; Goi, Daniele - In: Sustainability 6 (2014) 5, pp. 2424-2434
Activated sludge is now one of the most widely used biological processes for the treatment of wastewaters from medium to large populations. It produces high amounts of sewage sludge that can be managed and perceived in two main ways: as a waste it is discharged in landfill, as a fertilizer it is...
Persistent link: https://www.econbiz.de/10011029863
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Pilot Experimentation with Complete Mixing Anoxic Reactors to Improve Sewage Denitrification in Treatment Plants in Small Communities
Raboni, Massimo; Torretta, Vincenzo; Viotti, Paolo; … - In: Sustainability 6 (2013) 1, pp. 112-122
>/TKN ratio. These fluctuations adversely affect the biological denitrification, as demonstrated by many pilot and real …-scale plants. The plants we tested were subjected to two treatment types: anoxic-aerobic and simultaneous denitrification. Both … improve the denitrification efficiency. The results prove that an average denitrification efficiency of up to 80% can be …
Persistent link: https://www.econbiz.de/10011030043
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Influence of Strong Diurnal Variations in Sewage Quality on the Performance of Biological Denitrification in Small Community Wastewater Treatment Plants (WWTPs)
Raboni, Massimo; Torretta, Vincenzo; Urbini, Giordano - In: Sustainability 5 (2013) 9, pp. 3679-3689
of high nitrogen with traditional activated sludge processes provided by pre-denitrification. To verify this problem, the … dissolved oxygen during denitrification when the BOD<sub>5</sub> load is low. These phenomena cause inhibitory effects and BOD …<sub>5</sub> deficiency in the denitrification process. The results demonstrate the need for a more complex approach to …
Persistent link: https://www.econbiz.de/10011030178
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UASB followed by Sub-Surface Horizontal Flow Phytodepuration for the Treatment of the Sewage Generated by a Small Rural Community
Raboni, Massimo; Gavasci, Renato; Urbini, Giordano - In: Sustainability 6 (2014) 10, pp. 6998-7012
The paper presents the results of an experimental process designed for the treatment of the sewage generated by a rural community located in the north-east of Brazil. The process consists of a preliminary mechanical treatment adopting coarse screens and grit traps, followed by a biological...
Persistent link: https://www.econbiz.de/10011030370
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A New Strategy for Utilizing Rice Forage Production Using a No-Tillage System to Enhance the Self-Sufficient Feed Ratio of Small Scale Dairy Farming in Japan
Zahra, Windi Al; Yasue, Takeshi; Asagi, Naomi; … - In: Sustainability 6 (2014) 8, pp. 4975-4989
Rice forage systems can increase the land use efficiency in paddy fields, improve the self-sufficient feed ratio, and provide environmental benefits for agro-ecosystems. This system often decreased economic benefits compared with those through imported commercial forage feed, particularly in...
Persistent link: https://www.econbiz.de/10010884950
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Considerations When Applying Simplified LCA Approaches in the Wine Sector
Arzoumanidis, Ioannis; Raggi, Andrea; Petti, Luigia - In: Sustainability 6 (2014) 8, pp. 5018-5028
Life Cycle Assessment (LCA) has been increasingly used to improve the environmental performance of food systems and simplification of LCA appears to be a vital question, especially for Small- and Medium-sized Enterprises (SMEs). Following a literature review on simplified LCA tools and their...
Persistent link: https://www.econbiz.de/10010885345
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Challenges for Sustainable Development and Its Legal Response in China: A Perspective for Social Transformation
Qin, Tianbao - In: Sustainability 6 (2014) 8, pp. 5075-5106
With rapid development since the 1970s, China is entering a period of social transformation, which not only creates favorable conditions for sustainable development but also presents new challenges. The transitional period in China is a stage in which two types of social transformation coexist,...
Persistent link: https://www.econbiz.de/10010885346
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Enhancing the Effectiveness of Cycle Time Estimation in Wafer Fabrication-Efficient Methodology and Managerial Implications
Chen, Toly; Wang, Yu-Cheng - In: Sustainability 6 (2014) 8, pp. 5107-5128
Cycle time management plays an important role in improving the performance of a wafer fabrication factory. It starts from the estimation of the cycle time of each job in the wafer fabrication factory. Although this topic has been widely investigated, several issues still need to be addressed,...
Persistent link: https://www.econbiz.de/10010885347
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Evaluation of the Effectiveness of Border Policies in Dehong Prefecture of Yunnan, China
Bie, Qianlong; Li, Cansong; Zhou, Shangyi - In: Sustainability 6 (2014) 8, pp. 5284-5299
With the process of globalization, many political geographers and research institutions have begun to focus on borders and border areas. Faced with the current debate on the border policies, this paper reviews the former research relating to border studies and provides an evaluation of China’s...
Persistent link: https://www.econbiz.de/10010886244