摘要
在单因素法考察絮凝剂稳定性和絮凝性能的基础上,采用响应曲面法建立Box-Behnken Design(BBD)数学模型,优化聚硅酸铝铁-聚二甲基二烯丙基氯化铵(PSAF-PD)絮凝剂制备条件。结果表明,对响应值的影响顺序为:铝铁摩尔比[n(Al)/n(Fe)]>PD质量分数[ω(PD)]>反应温度(T),最佳制备条件为n(Al)/n(Fe)=2.33,ω(PD)=0.44%,T=41.12℃。PSAF-PD投加量为0.04 m L/m L时,模拟液浊度、色度、木质素磺酸钠的去除率分别为96.89%、97.70%、89.02%。造纸废水絮凝实验表明,PSAF-PD投加量为0.8 m L/m L,其化学需氧量(COD)、色度、浊度、UV_(254)的去除率分别为78.88%、92.06%、96.07%、79.12%。PSAF-PD比某商品PSAF的投加量少,反应速率快,絮体紧凑,处理效果好。
The coagulant stability and performance of a novel double machine coagulant polyaluminum silicate ironpolydimethyldiallylammonium chloride（ PSAF-PD） is studied by using single factor analysis method. Then the BoxBehnken Design（ BBD） mathematical model is used to optimize the preparation conditions of PSAF-PD. The influence of the conditions on the response value is： n（ Al） ∶ n（ Fe） ω（ PD） T. The optimum preparation conditions are： 2. 33 of n（ Al） ∶ n（ Fe）,0. 44% of ω（ PD） and 41. 12℃ of reaction temperature. The removal rate of COD,chromaticity,turbidity,UV_（254） from papermaking wastewater are 78. 88%,92. 06%,96. 07% and 79. 12%,respectively,by using 0. 8m L / m L of PSAF-PD as coagulation agent. In comparison with the commercial PSAF,PSAF-PD exhibits higher coagulation efficiency.
出处
《现代化工》
CAS
CSCD
北大核心
2016年第9期104-108,共5页
Modern Chemical Industry
基金
国家科技支撑计划,造纸达标尾水膜法处理工艺包设计与应用示范(2013BAE11B03)
关键词
复合絮凝剂
响应曲面法
PSAF-PD
造纸废水
composite coagulant
response surface methodology
PSAF-PD
papermaking wastewater
