排序方式: 共有24条查询结果,搜索用时 234 毫秒
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聚丙烯酰胺-膨润土复合物的制备及其性能研究 总被引:3,自引:0,他引:3
采用盐酸对膨润土(BNT)进行酸活化改性,改性BNT再与氯化乙醇胺(EACl)进行阳离子交换反应,引入功能基团,得到胺化产物(ABNT-EACl).利用ABNT-EACl作为还原剂与Ce4 组成氧化还原引发体系,引发了丙烯酰胺(AM)单体的插层聚合得到了改性膨润土/聚丙烯酰胺无机/有机杂化物(ABNT/PAM).采用1H-NMR和FTIR对杂化物进行了结构表征,结果表明,杂化物中存在离子键合作用.通过实验对比研究了不同条件下的杂化物ABNT/PAM与普通絮凝剂处理工业印染废水的脱色效果,发现ABNT/PAM杂化物的效果优于普通絮凝剂. 相似文献
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Zuo Xu Nie Jianxin Jiang Beier Jiang Aijun Zou Shiyang Wu Junrong Ding Bingquan Wang Xue hui Liu Yang 《Environmental science and pollution research international》2022,29(50):75597-75608
Environmental Science and Pollution Research - Advanced oxidation processes (AOPs) are efficient methods for water purification. However, there are few studies on using peroxymonosulfate (PMS) to... 相似文献
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Yuqiang Liu Ruidong Peng Ya Xu Changxin Nai Lu Dong Junrong Ren 《Journal of Material Cycles and Waste Management》2014,16(4):597-607
The stability of hazardous waste (HW) landfill is a major security risk to the landfill environmental safety. The mechanical behavior of waste controls many aspects of landfill design and operation, including stability and settlement issues and the integrity of geosynthetic and liner components. This study presents the results of a laboratory experiment to learn the mechanical properties of HW collected from the Hangzhou HW landfill. Measured mechanical behavior was compared with results for municipal solid waste (MSW) to assess their discrepancies. The particle size of HW was analyzed by the sieving and hydrometer methods. Because HW comes primarily from industrial plants in the form of sludge or slag, their particle sizes are generally smaller than those of MSW. This study indicates that the shear strength parameters of HW are more sensitive to the methods of testing and calculation than those of MSW. Numerical simulations demonstrate that the safety factor of a landfill is affected by the mechanical properties of HW, especially cohesion and friction angle. Because of the lower particle size and wider compression ratio, compared to MSW, an HW landfill should be taken more care in its operational procedures so as to increase its stability. 相似文献
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垃圾渗滤液水质十分复杂,不仅含有耗氧有机污染物,还含有各类金属离子和植物营养素(氨氮等),工业垃圾渗滤液中还会含有有毒有害的污染物;其中有难以生物降解的萘、菲等非氯化芳香组化合物、氯化芳香组化合物、磷酸酯、邻苯二甲酸酯、酚类化合物和苯胺类化合物等;垃圾渗滤液中含有十多种金属离子,其中的重金属离子会对微生物产生抑制作用;氨氮含量高,C/N比例失调,磷元素缺乏,给生物处理带来一定的难度.本文开发了UASB-GAIA-BAF一体化生化处理工艺,以节约成本,提高垃圾渗滤液中有机物去除率,加快反应速率为目的,对厌氧生物处理、高级氧化处理、固定化生物滤池组合工艺降解垃圾渗滤液进行了初步设计和工程应用.处理工艺具有工艺成熟、投资省、运行费用低、污泥产生量小的优点. 相似文献
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讨论了烟气格曼数与监测时间选择和计算取值方面存在的问题。认为在一个加煤燃烧周期内按一定间隔时间取值,然后取量大值与平均值之和和1/2作为监测结果有一定意义。并提出了一个表达方式,时时-林格曼数B=1/TΣ(n,i=1)。 相似文献
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文章从环境监测结果的代表性、完整性、精密性、准确性、可比性等方面论述了监测分析工作的质量要求,并从有效数字的记录和计算、计量单位、记录中常见错误、数据之间的合理性关系审核等方面进行了探讨,为获得质量可靠的监测结果提供科学参考. 相似文献
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