ABSTRACT
ABSTRACT: This is a small pilot study about sewage treatment plant in Shaanxi Fengxiang A2O sewage treatment process. The raw water COD was up to 608.00 mg / l, TN 110.75 mg / l, total phosphorus 3.59 mg / l, SS was 302.60 mg / l. By adding Sujing ecient denitrification filler in oxic tank, COD of euent water quality packing down 80 mg / l or less, ammonia down to 5 mg / l or less, which can eciently remove nitrogen and packing of organic pollutants in sewage. With ammonia as a standard method, we get the apparent growth rate is 0.079, and calculating the apparent growth factor activated sludge micro-organisms Yobss and the apparent growth factor biofilm microorganisms Yobsb, respectively, were 0.023 and 0.093. COD as a standard the apparent growth rate was 0.073, Yobss and Yobsb were 0.022, 0.223.
