Key Caboratory of Chinese Ministry of Education of northwest Water Resource and Environmental ecolog School of environmental and Municipal Engineering 声建墨群骨 xi'an University of Architecture and Technology Phosphorus in domestic wastewater 8.0 口 Dissolved TP 」6.0 口 Suspended TP 4.0 2.0 0.0 10 13 25 Sampling Number Dissolved average 525% Suspended average 47.5%Key Laboratory of Chinese Ministry of Education of Northwest Water Resource and Environmental Ecology School of Environmental and Municipal Engineering Xi’an University of Architecture and Technology