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助凝

助凝的相关文献在1995年到2022年内共计110篇,主要集中在建筑科学、废物处理与综合利用、化学工业 等领域,其中期刊论文76篇、会议论文2篇、专利文献36974篇;相关期刊49种,包括城市建设理论研究(电子版)、哈尔滨建筑大学学报、沈阳建筑大学学报(自然科学版)等; 相关会议2种,包括全国自来水厂、污水处理厂技术改造研讨会、2002全国水处理技术研讨会等;助凝的相关文献由307位作者贡献,包括马军、李圭白、李星等。

助凝—发文量

期刊论文>

论文:76 占比:0.21%

会议论文>

论文:2 占比:0.01%

专利文献>

论文:36974 占比:99.79%

总计:37052篇

助凝—发文趋势图

助凝

-研究学者

  • 马军
  • 李圭白
  • 李星
  • 任毅
  • 张金松
  • 杨艳玲
  • 王晓昌
  • 蒋福春
  • 金鹏康
  • 何文杰
  • 期刊论文
  • 会议论文
  • 专利文献

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    • 尹翠琴; 方雯萱; 谢宇; 朱奇奇
    • 摘要: 本文在水厂投产前期,利用生产性试验研究了次氯酸钠和臭氧(投加量为0.8~1.0mg/L)两种不同的预氧化方式的运行效果。对比分析了预臭氧接触池、沉淀池和出厂水水质以及絮凝剂的投加量,研究结果表明:臭氧对耗氧量、藻类、铁和锰的预氧化效果明显优于次氯酸钠;预臭氧化的絮凝剂的投加量比预氯化的降低约20.4%;预臭氧化的出厂水浊度比预氯化的降低约29%。研究思路可为其他自来水厂的预氧化方式提供参考。
    • 苏碧云; 刘博; 黄力; 潘丹丹; 孟祖超; 丁丽芹; 李谦定
    • 摘要: 针对长庆油田某天然气处理厂含醇污水在预处理中存在的含油量高、透光率低等问题,选取壳聚糖作为聚合氯化铝的助凝剂处理该含醇污水.主要研究了在壳聚糖助凝作用下含醇污水的透光和除油效果,实验表明,在壳聚糖的助凝作用下含醇污水絮凝效果显著,对含醇污水的透光率和除油率分别达到95.6%、96.8%.
    • 解帅帅; 刘明午; 聂素双
    • 摘要: 选择几种有代表性的微粒作为絮凝助剂,通过对通用洗衣粉、强力洗衣粉、皂化液、乳化剂及其混合物进行絮凝,探讨微粒的粒径、种类对洗涤剂絮凝效果的影响.结果表明:对于离子型洗涤剂的絮凝,300目活性炭的助凝效果较好;对于非离子型洗涤剂的絮凝,淀粉微粒助凝效果较好.各种微粒作为助凝剂都能够改善这些洗涤剂及其混合物的絮凝效果,并在保证出水水质的前提下,絮凝同样的洗涤剂能减少絮凝剂的用量.
    • 黄金阳; 王伟艺
    • 摘要: 通过混凝沉淀试验,本文研究了废纸纤维对聚合氯化铝铁(PAFC)的助凝效果.试验结果表明,当原水浊度为21.8 NTU,PAFC投加量为10 mg/L,废纸纤维投加量为30 mg/L时,出水浊度为1.45 NTU,浊度去除率可达93.35%.使用时,废纸纤维宜在快速搅拌前投加,并采用100 r/min的速度进行中速搅拌,与PAFC配合使用,适宜处理不同浊度的原水,且近中性偏碱性条件下处理效果较好.
    • 郑帼; 王彩林; 孙玉
    • 摘要: 为解决废弃钻井泥浆固-液两相难分离的问题,利用具有高黏度的高分子凝聚剂对泥浆体系进行胶体化处理,使泥浆由流体转化为冻状胶态,通过化学胶体的破胶与聚沉作用、酸化破胶及无机助凝的过程,实现废弃泥浆的固液分离.通过场发射扫描电子显微镜对泥饼的表面形貌进行了分析.结果表明:泥浆分离效果由凝聚剂、酸化剂以及助凝剂的类型与投加量决定,当有机成胶剂为A-PA、破胶剂为H20、无机助凝剂为Ca(OH)2,且投加量分别为0.375 g、0.5 g和15.0 g时,钻井泥浆固液分离效果最好,泥饼的固相质量分数(固含量)由44.5%提高到80.5%.%To solve difficult separation problem of the solid-liquid two-phase waste drilling mud, the slurry system was converted to colloid from fluid with the colloidization of high polymer coagulants with high viscosity. The solid-liquid separation of the waste slurry was realized by the process of chemical colloidal gel breaking, coagulation function, acidification gelout and inorganic coagulation. In addition, the surface morphology of slurry cake was investigated by using Field emission scanning electron microscope (FE-SEM). The results indicate that mud separation effect is decided on the type of flocculants, gel breaker and coagulant aid. The solid content of mud cake increases from 44.5% to 80.5% when A-PA, H20 and Ca(OH)2 are employed as the flocculants, gel breaker and coagulant added with the dosage of 0.375 g, 0.5 g and 15.0 g respectively.
    • 雷绍民; 谢飞翔; 林敏; 刘园圆; 叶昭
    • 摘要: 采用氯化钙化学沉淀,聚合氯化铝混凝,聚丙烯酰胺助凝,净化石英提纯工业废水中的氟离子.试验结果表明:pH值、药剂用量、添加顺序、反应时间等条件对净化效果有明显影响.在模拟选矿废水条件下可将氟离子质量浓度从100 mg/L降至8 mg/L,用优化后的反应条件净化石英提纯工业含氟废水,净化排水中氟离子质量浓度符合国家工业废水氟化物一级排放标准,为石英提纯工业含氟废水的净化提供技术支持.%The fluoride ions of quartz industrial wastewater were purified by chemical precipitation, coagulation and auxiliary coagulation using calcium chloride, polymeric aluminum chloride and polyacrylamide respectively. The results showed that the effects had been obviously affected by pH, dosage of reagent, adding order and reaction time. The fluoride ion concentration of wastewater were degraded from 100 mg/L to 8 mg/L under the condition of simulating mineral processing wastewater. Optimized conditions were used to deal with the fluoride ions of quartz industrial wastewater, and it meet the criteria of the nation first grade standard. It will provide a technical support for purification of industrial wastewater containing fluoride.
    • 仲米贵; 王郑; 黄雷; 薛侨; 陈萌萌; 张友宏
    • 摘要: Chitosan(CTS) was used to enhance the flocculation effect of poly-aluminum chloride(PAC) coagulation on natural water samples,the CTS dosage,stirring speed and water pH on the effect of flocculation effluent CODMn and turbidity were studied,using Zeta potential analyse the coagulation mechanism.Result showed that in the range of neutral and weak alkaline pH,PAC concentration was 30 mg/L,CTS dosage was 0.2 mg/L,the effect of flocculation aid was best;floc became looser and smaller with the stirring speed increased,which is bad to gather the flocs and settlement;and the coagulation mechanism of CTS is mainly adsorption bridging rather than electrical neutralization.%以壳聚糖(CTS)作为水厂常用絮凝剂聚合氯化铝(PAC)的助凝剂,以实际水体为实验水样,考察了CTS投加量、搅拌速度和水样pH值对絮凝出水CODMn和浊度的影响,并结合Zeta电位分析助凝机理.结果表明,pH为中性及弱碱性,PAC浓度30 mg/L,CTS投加0.2 mg/L时,助凝效果最佳;搅拌速度越快,形成絮体越松散细小,不利于聚集沉降.CTS的助凝机理以桥联作用为主,电性中和作用次之.
    • 任毅
    • 摘要: 以聚合氯化铝(PAC)为主混凝剂,粉末活性炭为助凝剂,对含氨氮微污染的珠江广州某河段原水进行混凝沉降试验。结果表明:(1)单独投加PAC,浊度去除率最高可达90%,氨氮去除率不足20%;(2)单独投加粉末活性炭,氨氮去除率可达40%,浊度去除率不足15%;(3)PAC与粉末活性炭同时投加,浊度去除率可达90%,氨氮去除率提升至45%;(4)粉末活性炭适宜在主混凝剂PAC之前投加,投加时间点靠前,助凝效果相对最佳;(5)偏酸性环境有利于氨氮去除,中性与碱性条件下对浊度去除效果好;当p H=5时,氨氮去除率可达62%;当p H=10时,剩余浊度去除率可达95%。
    • 赵瑾; 王文华; 姜天翔; 王树勋; 王静; 张雨山
    • 摘要: 将PAC与PDMDAAC协同使用处理近岸海水,考察其对海水中污染物的混凝效能,监测絮体厚度的变化过程,并分析稳定动力学规律。结果表明,与单独投加PAC相比,PAC与PDMDAAC协同作用下的絮凝效果较好,对海水中浊度和磷酸盐的去除率可分别提高22.3%、22.0%,生成的絮体厚度较大,絮凝持续时间较短,说明PDMDAAC有显著的助凝作用。从体系稳定性角度分析絮凝机理,投加PDMDAAC的海水体系具有较大的稳定动力学参数,使海水更易脱稳。%PAC and PDMDAAC have been used synergistically for treating seawater from nearshore. The coagula-tion effect of flocculants on the pollutants in seawater is investigated ,the changing process of the thickness of the flocs is monitored,and the rule of stability kinetics is analyzed. The results show that compared with using PAC singly,using PAC and PDMDAAC synergistically has better flocculation effect. The removing rates of turbidity and phosphate are increased by 22.3%and 22.0%. The thickness of the generated flocs is higher and the duration of floc-culation is shorter. It indicates that PDMDAAC has obvious flocculation aid function. In addition ,the mechanism of flocculation is analyzed at an angle of system stability. Seawater system added with PDMDAAC has large stability kinetics parameters,so that the seawater is apt to be destabilized.
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