橡胶企业生化尾水深度处理剂的研制与评价

Development and evaluation of biochemical wastewater treatment agents for rubber enterprises

本文采用2499型PVA、HEDP、聚合氯化铝、KMnO_(4)为原料制备橡胶企业生化尾水深度处理剂;通过单因素实验筛选出最佳氧化剂类型与加量;设计两组正交实验,优化出最佳反应条件并筛选出最佳反应物配比。实验结果表明,以COD为考察因素,制备处理剂的最佳反应条件为反应温度为60℃、反应时间为5h、体系p H值为7、机械搅拌速度为600r·min^(-1);以COD、SS、BOD以及NH_(3)-N为考察因素,优化出KMnO_(4)为最佳氧化剂,最优加量为9%;反应物的最佳配比为14%PVA+10%聚合氯化铝+10%HEDP+9%KMnO_(4);参照GB 27632-2011《橡胶制品工业污染物排放标准》优化出处理剂最佳加量为150 mg·L^(-1),动态连续处理工艺中最佳的进液流量应为100 L·h^(-1)。

The paper uses 2499 type PVA,HEDP,polyaluminum chloride,and potassium permanganate as raw materials to prepare biochemical wastewater deep treatment agents for rubber enterprises;Screen the optimal type and dosage of oxidant through single factor experiments;Design two sets of orthogonal experiments to optimize the optimal reaction conditions and screen out the optimal reactant ratio.The experimental results showed that the optimal reaction conditions for preparing the treatment agent were reaction temperature of 60℃,reaction time of 5 hours,system pH value of 7,and mechanical stirring speed of 600 r·min^(-1),with COD as the investigation factor;Taking COD,SS,BOD,and NH_(3)-N as the investigation factors,potassium permanganate was optimized as the optimal oxidant,with an optimal dosage of 9%;The optimal ratio of reactants is 14%PVA+10%polyaluminum chloride+10%HEDP+9%potassium permanganate;According to GB 27632-2011"Emission Standards for Industrial Pollutants from Rubber Products",the optimal dosage of the treatment agent is optimized to be 150mg·L^(-1),and the optimal inlet flow rate in the dynamic continuous treatment process should be 100L·h^(-1).