Experimental study of garden waste and vegetable waste co-composting

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.