厌氧塘强化手段对造纸废水难降解部分的影响

研究氮、磷、填料三因素对厌氧塘处理制浆造纸废水效果的影响．实验采用三因素二次最优饱和设计，目的是找出厌氧塘出水中难降解物质和出水可生物降解性与添加氮水平、磷水平、以及填料水平组合的关系．分别建立了厌氧塘出水吸光值、吸光值与COD的比值与氮、磷、填料的回归方程，并找出了最优处理效果的氮水平、磷水平．结果显示出水吸光值与氮二次项正相关，与磷二次项正相关，与磷一次项负相关．吸光值与COD的比值与磷二次项正相关，与磷一次项负相关．

Study on effect of optimizing enhanced measure of anaerobic pond for treating pulp wastewater on slowly biodegradable portion

Studied the effect of nitrogen phosphorus and stuffing on the slowly biodegradable potion of anaerobic pond effluent. The experiment adopts three factors quadratic saturated design. The main object is to find out the relationship between combination level of the three factors and slowly biodegradable potion and biotreatability of effluent . Two series of regression equations are formulated to express: A) relationship between the effluent spectrophotometric values and nitrogen and phosphorus levels, and B) relationship between the ratio of spectrophotometric values to COD and nitrogen and phosphorus levels. From the equation we can get the optimized nitrogen and phosphorus levels. Results showed:A) the value of effluent spectrophotometric values is in positive relationship to the second power of nitrogen and phosphorus levels, and is in negative relationship to the first power of phosphorus level,and B)the ratio of spectrophotometric values to COD is in positive relationship to the second power of phosphorus level and is in negative relationship to the first power of phosphorus level. The output will be used to run the stabilization pond of Huaxin pulp.