}}
[[Image:Co-composting.PNG|thumb|right|150px|[[Co-composting |Co-composting]], in Yemen (for credits, click the picture)]]
[[Image:Icon_co-composting.png |right|95px]]
'''Co-Composting is the controlled aerobic degradation of organics using more than one materials (Faecal sludge and Organic solid waste). Faecal sludge has a high moisture and nitrogen content while biodegradable solid waste is high in organic carbon and has good bulking properties (i.e. it allows air to flow and circulate). By combining the two, the benefits of each can be used to optimize the process and the product. For dewatered sludges, a ratio of 1:2 to 1:3 of dewatered sludge to solid waste should be used. Liquid sludges should be used at a ratio of 1:5 to 1:10 of liquid sludge to solid waste.'''
'''[[Image:Co-Composting is the controlled aerobic degradation of organics using more than one materials (Faecal sludge and Organic solid waste)composting. Faecal sludge has a high moisture and nitrogen content while biodegradable solid waste is high PNG|thumb|right|150px|[[Co-composting |Co-composting]], in organic carbon and has good bulking properties Yemen (i.e. it allows air to flow and circulate). By combining the twofor credits, click the benefits of each can be used to optimize the process and the product. For dewatered sludges, a ratio of 1:2 to 1:3 of dewatered sludge to solid waste should be used. Liquid sludges should be used at a ratio of 1:5 to 1:10 of liquid sludge to solid waste.'''picture)]]
===Open co-composting===
