Key Lab of Northwest Water Resource Environment and Ecology Ministry of Education of China Xi’an University of Architecture and Technology Xi’an 710055 ChinaDepartment of Geo-science and Environmental Engineering Baoji University of Arts&Sciences Baoji 721007 China;
Key Lab of Northwest Water Resource Environment and Ecology Ministry of Education of China Xi’an University of Architecture and Technology Xi’an 710055 China;
nitrogen retention; composting reactor; human feces; aerobic; thermophilic; fertilizer;