Soil Rehabilitation Potential of Co-Compost Pellets Made from Municipal Solid Waste and Dewatered Faecal Sludge as Feedstock
AWS Pushpa Kumara1, Felix Thiel2, Jayantha Weerakkody1, Bandula Ranaweera1
1Wayamba University of Sri Lanka, Fac. of Agriculture and Plantation Management, Sri Lanka
Solid waste management challenges are felt most keenly in the developing countries as a major consequence of development and modernisation. Sri Lanka as a developing country faces severe issues in managing the daily generated liquid and solid waste. Organic fractions of these waste takes a higher percentage. The organic portions of municipal solid waste (MSW) and co-composting of dewatered faecal sludge (DFS) is a feasible low-cost technology which enhances sanitation and waste management. The aim of this research was to evaluate the effect of MSW and DFS co-compost pellets produced with the addition of mineral fertiliser and biochar on soil chemical and biological properties. Trapezoidal windrow type co-compost piles were prepared with 18m3 volume and 70% MSW and 30% DFS. Temperature measurements, watering and turning were done as necessary. Weekly samples were collected for chemical analysis. Resulted co-compost was mechanically pelletized using biochar and mineral fertiliser as additives and used in maize cultivation.
Keywords: Biochar, co-compost, dewatered faecal sludge, municipal solid waste
Contact Address: Felix Thiel, Ruhr University Bochum / International Water Management Institute, Inst. of Geography / Rural Urban Linkages, Universitäts str 150, 11222 Bochum, Germany, e-mail: leifgraugmail.com