Experimental study of garden waste and vegetable waste co-composting

摘要

Three kinds of aeration modes were carried out in windrow, to investigate the effects of aeration modes on the co-composting of garden waste and vegetable waste. The composting parameters such as temperature, oxygen concentration, volatile organic compounds, ratio of organic carbon to total nitrogen (C/N) and oxygen concentration showed that oxygen-dependent and intermittent ventilation composting products were stabilized after 42 days of co-composting. And the days of temperature above 55□ were 7d, 9d, respectively, meeting the requirements to kill pathogens. However, the index results of natural ventilation showed that the compost is not fully maturity. This shows that co-composting of garden waste and vegetable waste by aerobic composting of ventilation control in windrow can get quality compost by optimizing composting process during 42 days. Composting can decrease non-point resource of organic solid waste by recycling nutrition to soil and improve fertility of soil.