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 Methods of Characterizing Wastewater Basic consideration for the characterization According to bulk parameters suspended matter, organic matter, nutrients, bacteria etc According to its state dissolved, colloidal, particulate, gaseous etc According to its treatability settleable, coagulable, biodegradable etcKey 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