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Modeling decentralized source-separation systems for urban waste management

หน่วยงาน Nanyang Technological University, Singapore

รายละเอียด

ชื่อเรื่อง : Modeling decentralized source-separation systems for urban waste management
นักวิจัย : Ng, Bernard Jia Han , Giannis, Apostolos , Chang, Victor Wei-Chung , Stegmann, Rainer , Wang, Jing-Yuan
คำค้น : -
หน่วยงาน : Nanyang Technological University, Singapore
ผู้ร่วมงาน : -
ปีพิมพ์ : 2555
อ้างอิง : Ng, B. J. H., Giannis, A., Chang, V. W. C., Stegmann, R., & Wang, J.-Y. (2012). Modeling Decentralized Source-Separation Systems for Urban Waste Management. International Journal of Engineering and Applied Sciences, 6, 283-287. , 2010-3980 , http://hdl.handle.net/10220/10691 , http://www.waset.org/journals/ijeas/v6.php , 171381
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : International journal of engineering and applied sciences
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

Decentralized eco-sanitation system is a promising and sustainable mode comparing to the century-old centralized conventional sanitation system. The decentralized concept relies on an environmentally and economically sound management of water, nutrient and energy fluxes. Source-separation systems for urban waste management collect different solid waste and wastewater streams separately to facilitate the recovery of valuable resources from wastewater (energy, nutrients). A resource recovery centre constituted for 20,000 people will act as the functional unit for the treatment of urban waste of a high-density population community, like Singapore. The decentralized system includes urine treatment, faeces and food waste co-digestion, and horticultural waste and organic fraction of municipal solid waste treatment in composting plants. A design model is developed to estimate the input and output in terms of materials and energy. The inputs of urine (yellow water, YW) and faeces (brown water, BW) are calculated by considering the daily mean production of urine and faeces by humans and the water consumption of no-mix vacuum toilet (0.2 and 1 L flushing water for urine and faeces, respectively). The food waste (FW) production is estimated to be 150 g wet weight/person/day. The YW is collected and discharged by gravity into tank. It was found that two days are required for urine hydrolysis and struvite precipitation. The maximum nitrogen (N) and phosphorus (P) recovery are 150-266 kg/day and 20-70 kg/day, respectively. In contrast, BW and FW are mixed for co-digestion in a thermophilic acidification tank and later a decentralized/centralized methanogenic reactor is used for biogas production. It is determined that 6.16-15.67 m3/h methane is produced which is equivalent to 0.07-0.19 kWh/ca/day. The digestion residues are treated with horticultural waste and organic fraction of municipal waste in co-composting plants.

บรรณานุกรม :
Ng, Bernard Jia Han , Giannis, Apostolos , Chang, Victor Wei-Chung , Stegmann, Rainer , Wang, Jing-Yuan . (2555). Modeling decentralized source-separation systems for urban waste management.
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Ng, Bernard Jia Han , Giannis, Apostolos , Chang, Victor Wei-Chung , Stegmann, Rainer , Wang, Jing-Yuan . 2555. "Modeling decentralized source-separation systems for urban waste management".
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Ng, Bernard Jia Han , Giannis, Apostolos , Chang, Victor Wei-Chung , Stegmann, Rainer , Wang, Jing-Yuan . "Modeling decentralized source-separation systems for urban waste management."
    กรุงเทพมหานคร : Nanyang Technological University, Singapore, 2555. Print.
Ng, Bernard Jia Han , Giannis, Apostolos , Chang, Victor Wei-Chung , Stegmann, Rainer , Wang, Jing-Yuan . Modeling decentralized source-separation systems for urban waste management. กรุงเทพมหานคร : Nanyang Technological University, Singapore; 2555.