| 1. |
- Ferrans, Laura, et al.
(författare)
-
Selecting sustainable sewage sludge reuse options through a systematic assessment framework : Methodology and case study in Latin America
- 2020
-
Ingår i: Journal of Cleaner Production. - : Elsevier. - 0959-6526 .- 1879-1786. ; 242, s. 1-12
-
Tidskriftsartikel (refereegranskat)abstract
- Sewage sludge is a by-product of wastewater treatment and has a complex composition including organic matter and nutrients. The recovery of the useful components can partially buffer the continuous depletion of natural resources. However, due to a range of many complex variables, such as concerns on safe-use practices and lack of technical capacities, sludge recovery is classified as a wicked problem. To facilitate the decision-making process, this study intends to provide a decision support framework (DSF) to guide decision making towards selecting sustainable options to handle sewage sludge in Latin America. The framework was tested and refined through a case study in Panajachel, Lake Atitlan, Guatemala. Sludge disposal solutions are missing in the municipality and the pathogen content highly exceeds national and international standards. The framework was used to evaluate possible recovery scenarios. The results show that the most sustainable ways to use sewage sludge in Panajachel are through agricultural use and soil conditioning. Composting is suggested as a conversion process to eliminate pathogens and obtain stable fertilisers.
|
|
| 2. |
- Sachpazidou, Varvara, et al.
(författare)
-
On The Road to Recovery of Organic Waste into a Growth Substrate - Öland Case Study
- 2020
-
Ingår i: 17th International Youth Science and Environmental Baltic Region Countries Forum, ECOBALTICA. - : Institute of Physics Publishing (IOPP).
-
Konferensbidrag (refereegranskat)abstract
- The CONTRA- Baltic Beach Wrack- Conversion of Nuisance to a Resource and Asset project aims to transform Beach Wrack into a Resource. In collaboration with CONTRA project, the Environmental Science and Engineering Group (ESEG) aims to demonstrate the technological and economic feasibility of using beach wrack raw materials for energy production and bio-based compost as practical approaches towards the circular economy. In the present study, the purpose is to concentrate the nutrients from four different biological materials (beach wrack, sawdust or wood chips, degraded sediments and Coffee powder), through the composting process.
|
|
