摘要
[目的]探讨淀粉基复合絮凝剂的最佳制备条件及其絮凝效果。[方法]以淀粉、硫酸铝与硫酸亚铁为主要原料,制备了淀粉基复合絮凝剂。采取正交试验设计方法,以CODCr去除率和色度去除率为指标,研究了pH、Fe/淀粉(质量比)、Al/淀粉(质量比)3种因子对复合絮凝剂处理印染废水效果的影响。[结果]从CODCr去除效率考虑,复合絮凝剂的最优制备条件:pH为2.5,Fe/淀粉(质量比)为0.35/1、Al/淀粉(质量比)为1.8/1。从色度去除效率考虑,复合絮凝剂的最优制备条件:pH为2.5,Fe/淀粉(质量比)为0.30/1、Al/淀粉(质量比)为1.8/1。[结论]在实际应用该复合絮凝剂时,应根据去除CODCr与色度的具体目的选择优化制备条件。
[Objective] The research aimed to discuss the best preparation condition and flocculation effect of starch-based complex flocculant.[Method]Starch,aluminum sulphate and ferrous sulfate as main materials,starch-based complex flocculant was prepared.By using orthogonal design,removal rates of the COD Cr and chroma as indicators,influences of the pH,Fe / starch（mass ratio） and Al / starch（mass ratio） on treatment effect of the dyeing wastewater by complex flocculant were studied.[Result] Considering from removal efficiency of the COD Cr,the optimal preparation condition of complex flocculant was that pH was 2.5,Fe/starch（mass ratio） was 0.35/1,and Al/starch（mass ratio） was 1.8/1.Considering from removal efficiency of the chroma,the optimal preparation condition of complex flocculant was that pH was 2.5,Fe / starch（mass ratio） was 0.30 /1,and Al / starch（mass ratio） was 1.8 /1.[Conclusion]When using the complex flocculant in practical engineering,the optimal preparation condition should be selected according to concrete objective of the removing COD Cr and chroma.
出处
《安徽农业科学》
CAS
2013年第6期2613-2614,2617,共3页
Journal of Anhui Agricultural Sciences
基金
广东省部产学研项目(2011B090400255
2010B090400418)
粤港关键领域重点突破项目(佛山专项)(2010Z52104)
佛山市科技发展专项(200606007)
