排序方式： 共有17条查询结果，搜索用时 31 毫秒
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文章以6000m3/ d 的洗漂废水处理厂为例,阐述了运用生物膜法处理工程的设计与运行. 说明了生物膜法对洗漂废水的处理是非常成功的. 采用此方法,具有处理效果稳定,挂膜时间短等特点. [1 ] 相似文献
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反应器形式及污泥形态对厌氧氨氧化菌群落结构的影响 总被引：1，自引：0，他引：1
通过构建克隆文库,对反应器类型和污泥形态对厌氧氨氧化（anammox）细菌的群落结构的影响进行探索. 研究发现,反应器类型对anammox细菌群落结构影响不大,但其种泥来源对功能细菌的群落结构有一定影响. 污泥形态对anammox细菌群落结构有着重要影响,絮体污泥中的anammox细菌以Candidatus Kuenenia为主;聚集态污泥中的anammox细菌则以Candidatus Brocadia为优势菌;在同时存在絮体污泥和生物膜的复合式反应器中,不同污泥形态中anammox细菌在接触时会发生迁移,但其优势菌种不发生变化. 相似文献
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阐述了耗散结构的基本理论及其在体育科学中的应用。包括耗散结构与热力学的辩证关系、耗散理论与非平衡态生物膜、运动训练过程的自组织特征、从耗散结构看运动员竞技能力的发展等。 相似文献
4.
设计了一种颗粒厌氧污泥-生物膜一体化反应装置,并对其动力学模型进行了研究,建立了反应装置的基质降解动力学模型和增长动力学模型,为提高北方地区低温条件下厌氧生物处理技术处理低浓度生活污水的效果进行了理论上的探索. 相似文献
5.
Slađana Popović Nikola Unković Gordana Subakov Simić Milica Ljaljević Grbić 《文物保护研究》2018,63(5):292-302
The presence of biofilms on stone monuments can lead to biodeterioration processes that significantly lower not only the aesthetic value of cultural heritage sites but also cause considerable physical and chemical damage to stone surfaces. In terrestrial environments, cyanobacteria have a significant role in biofilm formation on a variety of natural and artificial stone substrata, including granite, sandstone, limestone, lime mortar, etc. Studies on cyanobacterial diversity and estimation of biodeteriorative activity on stone cultural heritage objects can be very important for conservators and restorers, and cyanobacteria removal from stone monuments is currently a great challenge for conservation science. In that sense, the diversity of terrestrial cyanobacteria was investigated at six localities in Serbia. Samples for cyanobacterial analyses were taken from surface biofilms covering different substrata: granite and lime mortar (The Monument to the Unknown Hero), sandstone (Branko's Bridge, Eiffel’s Lock) and carbonate rock (Medieval tombstones from Mramorje and Rasti?te, Gradac Monastery). A total of 18 cyanobacterial taxa were identified. The highest diversity was found on carbonate rock, followed by sandstone. Cyanobacteria were also recorded on an artificial substratum – lime mortar, while cyanobacteria were not found on granite. All detected cyanobacteria seriously impaired the structural and aesthetic integrity of the studied monuments via mechanical and chemical actions, so their presence must not be overlooked. 相似文献
6.
Aiming at the defects in previous research and based on porous pelletmodel,the kinetics model of organic matter degradation in FBBR has been estab-lished.By means of synthesis phenolic wastewater treatment experiment,the reliabil-ity of the model is tested and the result shows that the precision is satistactory.De-pending on the model,the paper analyses in detail the mechanism of organic matterdegradation and the effect of biofilm thickness on reactor performance in FBBR.Theresearch result indicates that high efficiency of FBBR lies in high value of ηX and thebiofilm thickness is a significant factor affecting η,X and reactor performance. 相似文献
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The Bacillus firmus was immobilized into Ca-alginate beads according to the different initial biomass concentration, calcification time and activation time.Three types of immobilized Bacillus firmus beads were packed respectively in trickling biofilter to purify xylene contained waste gases,and the performance of immobilized-cell biofilter was compared with traditional biofilm attached biofilter packed with two types of ceramic pellets.The results showed that three types of immobilized beads had different capabilities for removing xylene and life-spans.Higher initial biomass in immobilized beads resulted in better performance but shorter life-span.Activation process can remarkably enhance the activity of bacteria,and the removal efficiency of xylene can substantially be improved.Calcification time had influence on life-span of immobilized beads.Without acclimation,the cell-entrapped biofilter can obtain the maximum elimination capacity of 92.4 g/(m~3·h).However,compared with biofilm attached biofilter,it has a poorer intrinsic drawback in volatile organic compounds (VOCs) removal due to the existence of excess mass transfer resistance. 相似文献
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[目的]研究表皮葡萄球菌的生物膜形成与其相关基因间的关系.[方法]用96孔聚乙烯板进行生物膜形成试验,以PCR法、RT-PCR法检测与生物膜形成相关的基因及其表达.[结果]aap是生物膜形成过程中的必须基因;bhp的编码表达与葡萄糖的存在有一定的关系;ica操纵子在合成PIA时不受葡萄糖添加的影响.[结论]ica操纵子、aap、bhp基因参与表皮葡萄球菌生物膜形成过程. 相似文献
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聚合物水泥是一种常用的建筑材料,采用聚合物水泥对有机材质滤料进行包覆改性,通过对其表面性能的改善,进而增强有机滤料的亲水性以及生物亲和性。实验结果表明,聚合物水泥基滤料在机械特性、水力学特性及生物学方面都占有优势,这种滤料制造工艺简单,费用低,原料来源广,节能环保,在污水处理领域中具有很广阔的发展潜力。 相似文献
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对循环移动载体生物膜反应器工艺性能进行了研究,通过实验确定了反应器构造、填料填充比,考察了曝气充氧性能,研究结果认为该反应器内的水流状态大致符合理想全混合反应器的流态,并具有较好的节能效果。 相似文献