scholarly journals Development of a planning approach for resource recovery and reuse on small islands

2021 ◽  
Author(s):  
Indra Firmansyah
Author(s):  
Wenshan Guo ◽  
Huu Hao Ngo ◽  
Lijuan Deng ◽  
Rao Y. Surampalli ◽  
Tian C. Zhang

Author(s):  
Isabela T. Mkude ◽  
Sara Gabrielsson ◽  
Richard Kimwaga

Abstract Resource recovery and reuse (RRR) of fecal sludge (FS) from onsite sanitation systems describes the concept of turning human waste into valuable end products. However, studies on peoples' perceptions of FS-derived products are still limited. Guided by the knowledge, attitudes and practices framework, and data from a survey of 395 households, focus group discussions and key informant interviews, this article explores how residents in three unplanned settlements of Dar es Salaam, Tanzania view FS RRR (FS-RRR). Results indicate that residents' knowledge about FS-RRR is moderately low. Moreover, residents generally have negative attitudes toward using FS-derived products, except for those not directly consumed, such as biogas or FS-briquettes. Additionally, only a few residents have engaged in any FS-RRR practices. We conclude that to increase local acceptance of FS-RRR will require significant efforts by a multitude of actors, not least to dispel myths linked to human waste, but also to raise awareness and demonstrate the benefits and safety of FS-derived products. The Tanzanian government must take the lead in this process and should start by prioritizing the improvement of FSM to enable such a shift.


Wastewater ◽  
2015 ◽  
pp. 113-136 ◽  
Author(s):  
Munir A. Hanjra ◽  
Pay Drechsel ◽  
Javier Mateo-Sagasta ◽  
Miriam Otoo ◽  
Francesc Hernández-Sancho

2011 ◽  
Vol 64 (10) ◽  
pp. 1987-1992 ◽  
Author(s):  
Grietje Zeeman ◽  
Katarzyna Kujawa-Roeleveld

A major fraction of nutrients emitted from households are originally present in only 1% of total wastewater volume. New sanitation concepts enable the recovery and reuse of these nutrients from feces and urine. Two possible sanitation concepts are presented, with varying degree of source separation leading to various recovery products. Separate vacuum collection and transport followed by anaerobic treatment of concentrated black water (BW) demonstrated on a scale of 32 houses preserve 7.6 g/N/p/d and 0.63 gP/p/d amounting to respectively 69 and 48% of the theoretically produced N and P in the household, and 95% of the retained P was shown to be recoverable via struvite precipitation. Reuse of the anaerobic sludge in agriculture can substantially increase the P recovery. Energy recovery in the form of biogas from anaerobic digestion of concentrated BW, fits well in new concepts of sustainable, zero energy buildings. Nutrient recovery from separately collected urine lowers the percentage of nutrient recovery in comparison with BW but can, on the other hand, often be implemented in existing sanitation concepts. Theoretically 11gN/p/d and 1.0 g P/p/d are produced with urine, of which 38–63 and 34–61% were recovered in practice on a scale of 8–160 inhabitants in Sweden. New sanitation concepts with resource recovery and reuse are being demonstrated worldwide and more and more experience is being gained.


2019 ◽  
Vol 53 (23) ◽  
pp. 13547-13548 ◽  
Author(s):  
Haiqing Chang ◽  
Baicang Liu ◽  
John C. Crittenden ◽  
Radisav D. Vidic

2013 ◽  
Vol 781-784 ◽  
pp. 1998-2002
Author(s):  
Peng Wang ◽  
Xiao An Wei ◽  
Wei Dong He ◽  
Yan Long Shi

As a kind of particular hazardous materials, waste or expired gun propellants must be properly disposed. The applications of reusing waste gun propellants in the industry of china were summarized. Some disposal technologies were also introduced. Waste gun propellants were not only transformed into some chemical products and civil special energies, but also they were reused as ingredients in different kinds of industrial explosives. Among those the incorporation of propellants into industry explosives offers the most economically effective, safe and environmentally friendly method. This paper also suggests that the trend for disposing energetic materials is resource, recovery and reuse (R3) technology.


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