摘要
制备无机-无机多元复合型絮凝剂聚硅酸铁钛,通过正交试验考察Fe∶Ti、(Fe+Ti)∶Si以及碱化度对混凝能力的影响,将其应用于焦化废水生化出水的混凝处理,并研究其对焦化废水中有机物的特性去除以及混凝过程中絮体粒径变化趋势。研究结果表明:配比为Fe∶Ti=7∶1、(Fe+Ti)∶Si=6∶1、碱化度=0.8的絮凝剂混凝能力较优;投加量为600 mg/L时,对焦化废水生化出水中浊度、DOC、COD_(Cr)和UV_(254)的去除率可以分别达到95.7%、24%、46.4%、36.1%,并且对其中长链羧酸、长链酰胺类以及类富里酸与酪氨酸类芳香性蛋白质有机物去除效果明显。
Preparation of inorganic-inorganic multi-element composite flocculant polyferric titanium silicate was introduced.The influence of Fe/Ti,(Fe+Ti)∶Si and the basicity(B)on the coagulation ability was investigated through orthogonal experiment.During the coagulation process,the removal characteristics of organic matter in coking wastewater and the changing trend of floc size were studied.The results showed that the flocculant with a ratio of Fe/Ti=7∶1,(Fe+Ti)∶Si=6∶1,and B=0.8 have better coagulation ability;The removal rates of turbidity,DOC,CODCr and UV254 in biotreated coking wastewater could reach 95.7%,24%,46.4%and 36.1%,when the dosage was 600 mg/L.It has obvious effect on long-chain carboxylic acids,long-chain amides,fulvic acid and aromatic proteins removal.
作者
齐文豪
王淑军
王旭明
杜志平
QI Wenhao;WANG Shujun;WANG Xuming;DU Zhiping(Institute of Resources and Environmental Engineering,Shanxi University,Taiyuan 030006,China;The University of Utah,Salt Lake City 84112,USA)
出处
《净水技术》
CAS
2021年第4期101-105,120,共6页
Water Purification Technology
基金
NSFC-山西煤基低碳联合基金重点支持项目-焦化废水资源化处理耦合新过程及调控机制(U1610222)。