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Integrating agriculture in designing on-site, low cost sanitation technologies in social housing schemes
Expanded Title:The aim of this project was to generate information on recycling of nutrients from DEWATS technology and other human excreta-derived materials (HEDM) that will inform policymakers and town planners in the design of new social housing developments that include an agricultural component. The specific objectives were: 1. To identify suitable agricultural areas in terms of liquid loading capacity, soil and climatic variables. 2. To evaluate the effect of wastewater use on soils and crop production including risks of microbial contamination. 3. To assess the quality of wastewater and its effects on the environment. 4. To generate information that could be used to develop protocols that integrates agriculture in social housing development schemes. These objectives were achieved through field, tunnel and laboratory activities that focused on the “nutrient uptake” aspect with some attempt at achieving nutrient balances and thus estimate of nutrient loss. The soil processes that govern the two most critical elements in human waste for both plant growth and possible environmental problems, namely nitrogen (N) and phosphorus (P), were the main focus. This involved their behaviour when applied in liquid (effluent) and solid (HEDM) form. Effluent application considered both the nutrient and water demands of the crops as opposed to the solid waste which concentrated on the former aspect. Other critical aspects of these materials examined were their pathogen content and their behaviour in soil as well as their acceptability for use by the target communities.
Date Published:12/09/2018
Document Type:Research Report
Document Subjects:Sanitation - On site sanitation
Document Format:Report
Document File Type:pdf
Research Report Type:Technical
WRC Report No:TT 700/18
ISBN No:978-1-4312-0866-1
Authors:Odindo AO; Bame IB; Musazura W; Hughes JC; Buckley CA
Project No:K5/2220
Document Size:6 991 KB
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