摘要
研制了海藻酸钠包埋壳聚糖凝胶小球和海藻酸钠/聚乙二醇4000复合包埋纳米过氧化钙缓释凝胶小球复配处理剂,考察其对水体中磷和有机物的去除效果及机理,采用X射线衍射、扫描电镜、元素能谱仪技术表征材料物化及形貌特征。该处理剂能够高效去除水中单一的磷和有机污染物,且对磷和甲基橙复合污染也具有较高的去除率;在实际河道水体中,该处理剂对高浓度的磷也具有较强的吸附能力,其缓慢释氧作用可保持水体溶解氧质量浓度在4.5 mg/L以上,为泥水界面处的好氧微生物提供了良好的好氧条件,可提高水体自净能力。
The water treatment agent composited by the sodium alginate encapsulated chitosan gel beads and the nano calcium peroxide gel beads coated with sodium alginate/polyethylene glycol 4000 were prepared to investigate its performance and mechanisms in the removal of phosphorus and organic matters in water.The physicochemical properties and morphology of the agent were characterized by X-ray diffraction,scanning electron microscope and elemental energy dispersive spectrometer.This composited water treatment agent can effectively remove single phosphorus or organic matters in water,and also has high removal efficiency for the complex phosphorus and methyl orange pollutants.The water treatment agent has higher adsorptive ability for phosphorus at high concentrationa real river.The slow release of oxygen can maintain the mass concentration of dissolved oxygen above 4.5 mg/L,therefore providing better aerobic condition for microorganisms in muddy-water interface and elevating the ability of self-purification of water.
作者
夏德春
郑翔
吕树光
郑立新
XIA Dechun;ZHENG Xiang;LYU Shuguang;ZHENG Lixin(Institute of Construction Science,Sinohydro Bureau 12 Co.,Ltd.,Hangzhou 330103,China;School of Resources and Environmental Engineering,East China University of Science and Technology,Shanghai 200237,China)
出处
《水利水电科技进展》
CSCD
北大核心
2021年第1期41-48,共8页
Advances in Science and Technology of Water Resources
关键词
海藻酸钠
壳聚糖
过氧化钙
除磷
富营养化
sodium alginate
chitosan
calcium peroxide
phosphorus removal
eutrophication
