
Keywords: تقاضای اکسیژن شیمیایی; C; carbohydrates; COD; chemical oxygen demand; EPS; extracellular polymeric substances; F/M; food to microorganisms ratio; HS; humic substances; IR; internal recycle; Lp; permeability; MLSS; mixed liquor suspended solids; MLVSS; mixed liquor volatile susp