瓜环对污水厂二级处理出水中有机污染物的混凝性能  

Coagulation performance of cucurbituril on the removal of organic pollutants in effluent from a secondary wastewater treatment plant

作　　者：王文[1] 王文东[1,2] 范庆海 岳强[1] 杨琴[3] 

机构地区：[1]西安建筑科技大学环境与市政工程学院,西安710055 [2]浙江清华长三角研究院生态环境研究所,嘉兴314006 [3]西安建筑科技大学理学院,西安710055

出　　处：《环境工程学报》2015年第11期5213-5218,共6页Chinese Journal of Environmental Engineering

基　　金：国家自然科学基金资助项目(21007050);国家"水体污染控制与治理"科技重大专项(2012ZX07308-001-08);浙江省水质科学与技术重点实验室开放基金项目

摘　　要：采用扫描电子显微镜和傅里叶红外光谱技术考察了瓜环的物化性能,以及溶液pH和瓜环投加量对其混凝效果的影响。结果表明,盐酸对瓜环的助溶效果最佳,混凝后絮体颗粒呈密实的团状。红外光谱中无新吸收峰出现,说明瓜环与污水中有机物的混凝去除以物理作用为主,无化学键的形成。当投药量大于400mg/L时,瓜环对初始有机物浓度为6.0mg/L和9.2mg/L的污水厂二级处理出水的TOC去除率分别在20%和25%以上。与明矾和聚合氯化铝等传统混凝剂相比,瓜环的混凝性能明显优于传统混凝剂且受pH值的影响较小,作为新型水处理材料具有一定的研究价值和应用前景。In this study,the physical and chemical properties of cucurbituril were assessed using scanning electron microscopy（ SEM） and Fourier transform infrared（ FT-IR） spectroscopy techniques,and the effects of solution p H and cucurbituril dosage on the coagulation performances on the sewages with different initial organic contents were investigated. Experimental results showed that hydrochloric acid showed notable promoting effect on the solubility of cucurbituril,and the flocs formed after coagulation were dense dough in shape particles. No new peaks were observed in the FT-IR spectrum of the flocs formed during coagulation,indicating that the coagulation of cucurbituril on the organic matters was mainly a physical process,without chemical bond formation.When the coagulant dosage was above 400 mg / L,the TOC removal rates of the secondary treated sewages with6. 0 mg / L and 9. 2 mg / L were above 20% and 25%,respectively. Compared with conventional coagulants,such as alum and PACl,the coagulation performance of cucurbituril were notable higher and less affected by solution p H. As a novel water treatment material,cucurbituril showed great research and application potentials.

关 键 词：瓜环 污水 混凝 有机污染物 

分 类 号：X703[环境科学与工程—环境工程]