共查询到19条相似文献,搜索用时 62 毫秒
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微生物絮凝剂及其在污水处理中的应用 总被引:10,自引:0,他引:10
综述了微生物絮凝的种类,性质,产生条件。讨论了影响微生物絮凝剂絮凝活性的主要因素和絮凝机理的多样性;列举了徽生物絮凝剂在水处理中的应用;最后,展望了微生物絮凝剂的研究发展方向。 相似文献
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微生物絮凝剂的研究现状与发展趋势 总被引:5,自引:0,他引:5
相对于传统絮凝剂而言,微生物絮凝剂具有絮凝效果好、应用范围广、易生物降解、对环境安全、无二次污染的特点。文章综述了微生物絮凝剂的类型和特点,详细阐述了其絮凝机理,分析了影响微生物絮凝剂絮凝性能的因素以及微生物絮凝剂在水处理中的应用。指出了当前微生物絮凝剂研究存在的问题以及今后的发展趋势。 相似文献
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絮凝剂的开发及其应用进展 总被引:2,自引:1,他引:2
文章对无机絮凝剂、有机高分子絮凝剂、微生物絮凝剂(MBF)和其他絮凝剂进行了介绍,综述了絮凝剂的研究现状,对以上几种絮凝剂在废水处理等领域中的应用情况进行了阐述。比较了几种絮凝剂的特点,并对絮凝剂的发展趋势进行分析和展望。 相似文献
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从土壤中分离、筛选得到一株稳定高效的微生物絮凝剂产生菌,命名为B—27。考察了碳源、氮源、pH、温度、培养时间等多种因素对絮凝剂(命名MBF—27)絮凝效果的影响。实验结果表明,当碳源为葡萄糖、氮源为酵母膏、pH为7.0、温度为35℃、培养时间为72h时,絮凝剂MBF—27对高岭土悬浊液的絮凝率可达93.8%。红外光谱扫描分析表明,该絮凝剂的主要成分为多糖类物质。同时,生物絮凝剂MBF—27对气田废水的COD和色度去除率分别达到60.77%和86.1%,优于传统的絮凝剂聚乙烯丙胺(PAM)和三氯化铁(FeCl3)。 相似文献
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有机高分子絮凝剂的应用与研究进展 总被引:1,自引:0,他引:1
絮凝沉淀法是水处理中的有效方法,絮凝剂的选择是该方法中的关键因素,根据其化学成分的不同,一般分为无机、有机、微生物絮凝剂三种。有机高分子絮凝剂由于其用量小、絮凝速度快和受外界因素影响小等优势得到广泛的应用。本文详细介绍了有机高分子絮凝剂的种类、使用情况及研究进展,并对有机高分子絮凝剂的发展趋势进行了展望。 相似文献
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聚丙烯酰胺类絮凝剂的制备及应用研究 总被引:2,自引:0,他引:2
为了研究絮凝效果与絮凝剂分子结构的关系,实验中制备了聚丙烯酰胺(PAM)、阳离子化聚丙烯酰胺(CPAM)和部分水解聚丙烯酰胺(PHP),将其分别与FeCl3复配后处理钻井废水。实验探讨了絮凝剂的分子量、PHP的水解度及阳离子度对絮凝作用的影响。实验结果表明:PAM、CPAM、PHP与无机混凝剂复配使用处理钻井废水时,最佳分子量是500万,处理效果依次为PHP>PAM>CPAM。 相似文献
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Mrcia Gabriel Genesio Mario da Rosa Arci Dirceu Wastowski Jefferson Alves da Costa Fernanda Volpatto 《环境质量管理》2019,29(2):149-154
Separation of water for reuse is essential in an effluent treatment system, especially in activities with high water consumption, such as a pig production system. The objective of this work was to evaluate the efficiency of Tanfloc SG® coagulant tannin/organic flocculant used to treat effluent generated during the intensive rearing of swine. For the evaluation, laboratory and in situ tests (field test) were performed. The laboratory tests were performed to define the concentration (1 and 16%), dosage (0, 0.1, 0.2, 0.3, 0.4, 0.5, 1.0, 2.0, 4.0, 8.0, and 16.0 milliliters of the solution), and time (24, 48, 72, and 96 hours) of coagulation/flocculation treatment of the solid portion of the effluent. The parameters pH, turbidity, oxidation reduction potential, dissolved oxygen, and electroconductivity (in microsiemens per centimeter) were evaluated using a multiparameter probe and the parameters ammonia (NH3), nitrate (NO3), and nitrite (NO2) in the laboratory, in relation to the coagulation/flocculation time of the solid part of the effluent. The use of tannin as a coagulant/flocculant of plant origin in the treatment of swine effluents was effective in reducing turbidity and concentrations of ammonia, nitrite, and nitrate, and it allowed separation of the solid–liquid phase in approximately 68% as liquid phase. 相似文献
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生物吸附法处理水体中的重金属的现状与展望 总被引:5,自引:0,他引:5
对生物吸附法处理水体中的重金属进行了综述,得出微生物对重金属表现出良好的吸附性能,吸附机理比较复杂,与离子交换有密切关系,常用吸附等温线评价微生物对重金属的吸附能力。由于该研究历史比较短,生物吸附的工艺应用、机理分析、生物固定化等研究还不够深入,有待进一步的研究探索,使其应用于工业生产。 相似文献
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生物吸附法处理水体中的重金属的现状与展望 总被引:8,自引:0,他引:8
对生物吸附法处理水体中的重金属进行了综述,得出微生物对重金属表现出良好的吸附性能。吸附机理比较复杂,与离子交换有密切关系,常用吸附等温线评价微生物对重金属的吸附能力。由于研究的历史比较短,生物吸附的工艺应用、机理分析、生物固定化方面的研究还不够深入,有待进一步的研究,使其应用于工业生产。 相似文献
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Yao-Cheng Lee Yung-Chin Yang Wen-Tong Chong 《International Journal of Green Energy》2016,13(14):1501-1506
Microbial fuel cells (MFCs) are one of the bioreactors that produce electrons by metabolizing substrate from microorganisms, and have the ability to both degrade waste solution and produce electrons. Recently, the activity of microorganisms has limited the power performance of MFCs. Chaos has been used to stimulate activity of microorganisms, but it has not been used previously in MFCs. In this study, three types of acclimations – native acclimation (NA), MFC acclimation (MFCA), and MFC embedded with chaotic electric field acclimation (CMFCA) – are applied to realize their performance and chemical oxygen demand (COD) removal in MFCs, respectively. Results show that the current density and the power density of CMFCA were improved by 1.33 and 1.25 times than MFCA, and the COD removal of CMFCA reached 85% after five days. In addition, the acclimation stage at the condition of CMFCA appeared after 10 days, but was not found for the MFCA system. These observations would provide positive information for improving the performance of MCFs in the future. 相似文献
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