Investigation and Analysis on Present Condition of Livestock Excrement and Urine Pollution in Hunan Province

Average emissions of animal feces and urine from 2000 to 2008 were calculated based on the amount of livestock and poultry in Hunan Province. Take the polluted water collected from livestock farm as samples to analysis the contents of Hg, As, Cu, Zn or e-coli, suspended matter, pH, for measuring the quality of wastewater. It showed that: average emissions of animal feces and urine from 2000 to 2008 was 1.23×108t, the value of chemical oxygen demand (COD), biochemical oxygen demand (BOD), NH3-N, total nitrogen (TN) and total phosphorus (TP), respectively is 2.95×106t, 2.64×106t, 2.75×105t, 1.85×105t and 6.54×105t. Loss amount of COD, BOD,