Potential of resource recovery in UASB/trickling filter systems treating domestic sewage in developing countries

This paper aims to present perspectives for energy (thermal and electric) and nutrient (N and S) recovery in domestic sewage treatment systems comprised of upflow anaerobic sludge blanket (UASB) reactors followed by sponge-bed trickling filters (SBTF) in developing countries. The resource recovery p...

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Bibliographic Details
Published in:Water science and technology 2017-04, Vol.75 (7-8), p.1659-1666
Main Authors: Bressani-Ribeiro, T, Brandt, E M F, Gutierrez, K G, Díaz, C A, Garcia, G B, Chernicharo, C A L
Format: Article
Language:English
Subjects:
Alternative energy sources
Anaerobic treatment
Anaerobiosis
Biogas
Bioreactors
Cities
Clusters
Colleges & universities
Developing Countries
Drying
Economic conditions
Efficiency
Effluents
Electric filters
Emissions
Energy
Energy recovery
Engineering
Environmental engineering
Hot Temperature
Household wastes
Inhabitants
Landfills
LDCs
Mineral nutrients
Nutrients
Population
Power plants
Reactors
Recovery
Residential energy
Resource recovery
Sanitation
Sewage
Sewage - chemistry
Sewage treatment
Sewage treatment plants
Sludge
Sulfur
Sustainability
Thermal energy
Trickling filters
Tropical climate
Upflow anaerobic sludge blanket reactors
Viability
Waste Disposal Facilities
Waste disposal sites
Waste Management - instrumentation
Waste Management - methods
Wastewater treatment
Wastewater treatment plants
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Summary:This paper aims to present perspectives for energy (thermal and electric) and nutrient (N and S) recovery in domestic sewage treatment systems comprised of upflow anaerobic sludge blanket (UASB) reactors followed by sponge-bed trickling filters (SBTF) in developing countries. The resource recovery potential was characterized, taking into account 114 countries and a corresponding population of 968.9 million inhabitants living in the tropical world, which were grouped into three desired ranges in terms of cities' size. For each of these clusters, a technological arrangement flow-sheet was proposed, depending on their technical and economic viability from our best experience. Considering the population living in cities over 100, 000 inhabitants, the potential of energy and nutrient recovery via the sewage treatment scheme would be sufficient to generate electricity for approximately 3.2 million residents, as well as thermal energy for drying purposes that could result in a 24% volume reduction of sludge to be transported and disposed of in landfills. The results show that UASB/SBTF systems can play a very important role in the sanitation and environmental sector towards more sustainable sewage treatment plants.
ISSN:0273-1223
1996-9732
DOI:10.2166/wst.2017.038