共查询到18条相似文献,搜索用时 62 毫秒
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流化式反应器生物膜特性的研究 总被引:6,自引:0,他引:6
本文在采用流化式生物膜反应器进行连续流废水处理试验的同时,研究了探讨了生物膜特性,进一步为流化式生物膜废水处理法的应用与开发提供实验依据。 相似文献
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移动床生物膜反应器处理污水的研究应用进展 总被引:29,自引:0,他引:29
简单介绍了移动床生物膜反应器(MBBR)的工艺原理,这种反应器不同于其他生物膜反应器的工艺特点。综述了最近国内外应用这种处理方法在工业污水、生活污水以及生物脱氮除磷方面的研究和应用现状。MBBR是集传统活性污泥法和生物膜法优点的一种高效的污水处理方法,针对该项技术目前在国内外的研究应用中存在的问题.指出了它的发展趋势与应用方向。 相似文献
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简述了移动床生物膜反应器的工艺原理和特点,详细介绍了国内外移动床生物膜反应器的研究现状,最后提出移动床生物膜反应器在实际工程应用和理论研究中的发展趋势。 相似文献
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利用移动床生物膜反应器(MBBR)工艺处理干清粪工艺的奶牛场废水。试验结果表明,进水NH4+-N含量、气水比、水力停留时间(HRT)以及是否回流对MBBR的处理效果影响明显,回流比对MBBR的脱氮效果有一定的影响。当进水NH4+-N、TN的质量浓度和COD分别为134.4、156.7 mg/L和460.7 mg/L时,在HRT和气水体积比、回流体积比分别为18 h和30:1、2:1的条件下,NH4+-N、TN和COD的去除率分别为98.04%、62.38%和75.18%。MBBR工艺可以有效地处理干清粪条件下的奶牛场废水,适应性强且效果稳定可靠。 相似文献
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应用多孔轻质无机载体的紊动床生物膜反应器 总被引:1,自引:0,他引:1
开发了一种多孔轻质无机载体并将其应用于紊动床生物膜反应器,探讨应用该载体的紊动床生物膜反应器及生物膜特性。结果表明:当填充率为3o{6时,紊动床生物膜反应器完成启动仅需要18d;采用该载体形成的生物膜厚度较小(〉500μm);当反应器微生物浓度为2.022—3.226gVS/L时,反应器对有机场的去除能力最高可达11.685kgCOD/m^3.d。 相似文献
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Robert Almstrand Frank Persson Holger Daims Maria Ekenberg Magnus Christensson Britt-Marie Wilén Fred S?rensson Malte Hermansson 《International journal of molecular sciences》2014,15(2):2191-2206
Moving bed biofilm reactors (MBBRs) are increasingly used for nitrogen removal with nitritation-anaerobic ammonium oxidation (anammox) processes in wastewater treatment. Carriers provide protected surfaces where ammonia oxidizing bacteria (AOB) and anammox bacteria form complex biofilms. However, the knowledge about the organization of microbial communities in MBBR biofilms is sparse. We used new cryosectioning and imaging methods for fluorescence in situ hybridization (FISH) to study the structure of biofilms retrieved from carriers in a nitritation-anammox MBBR. The dimensions of the carrier compartments and the biofilm cryosections after FISH showed good correlation, indicating little disturbance of biofilm samples by the treatment. FISH showed that Nitrosomonas europaea/eutropha-related cells dominated the AOB and Candidatus Brocadia fulgida-related cells dominated the anammox guild. New carriers were initially colonized by AOB, followed by anammox bacteria proliferating in the deeper biofilm layers, probably in anaerobic microhabitats created by AOB activity. Mature biofilms showed a pronounced three-dimensional stratification where AOB dominated closer to the biofilm-water interface, whereas anammox were dominant deeper into the carrier space and towards the walls. Our results suggest that current mathematical models may be oversimplifying these three-dimensional systems and unless the multidimensionality of these systems is considered, models may result in suboptimal design of MBBR carriers. 相似文献
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简述了移动床生物膜反应器的工艺原理和特点,详细介绍了国内外移动床生物膜反应器在生活污水、工业废水和生物脱氮方面的研究现状。通过比较不同生物膜法对焦化废水的处理效果,指出移动床生物膜反应器是一种经济、高效的焦化废水处理方法,最后提出移动床生物膜反应器在实际工程应用和理论研究中的发展趋势。 相似文献
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以金氏菌Kingella H为菌种,在填充活性炭的玻璃柱中挂膜建立固定化生物膜反应器.分析和考察了碳源浓度、氮源浓度、染料浓度、处理时间、初始pH值、进水温度和曝气量等因素对生物膜反应器处理结晶紫(CV)模拟废水的影响.结果表明,较低浓度的碳源和氮源即可维持反应器的正常运行,达到理想的脱色效果;CV对生物膜的活性有一定的抑制作用,但反应器仍可使浓度高达500 mg·L-1的CV模拟废水在30 min内的脱色率达97%以上;反应器的最佳运行条件是:进水的pH值为7,温度为35℃,处理过程中的曝气量为180 L·min-1. 相似文献
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《分离科学与技术》2012,47(5):647-653
Different solid/liquid separation techniques for particle separation after a moving bed biofilm reactor are discussed. Conventional technologies such as sedimentation, floatation, and depth filtration are reviewed based on reports and articles in the literature. Optimal operating parameters that lead to satisfactory solids removal rates were given for each technology. Disc and membrane filtration are also discussed as relatively new technologies that offer advanced solids separation process. The potential of membrane separation, especially submerged membrane reactors (sMBR), were found and they are therefore proposed as a good alternative to conventional solid/liquid separation technologies. The nature and characteristics of the biofilm process also opens for a variety of possible configurations of submerged MBR that could be employed for advanced treatment of effluent from a moving bed biofilm process. 相似文献
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塑料在污水处理悬浮载体生物膜工艺中的应用 总被引:6,自引:0,他引:6
介绍了塑料在污水处理悬浮载体生物膜工艺(MBBR)中作为悬浮填料的应用情况,讨论了悬浮填料对塑料的要求,悬浮填料制品的形状及其对污水处理效果的影响,并对目前塑料悬浮填料所存在的问题和发展动向进行了探讨。 相似文献
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A flexible fibre biofilm reactor was developed for treatment of organic wastewaters. The hydrodynamic characteristics and mass transfer coefficients of oxygen were studied and compared with those of the conventional activated sludge processes. Tracer experiments were performed to obtain the residence time distributions of the reactors. The results indicated that both reactors could be treated as mixed flow reactors. The effects of flow rates of water and air on the overall mass transfer coefficient of oxygen were investigated, and the correlations between the mass transfer coefficient and the ratio of flow rates were obtained. Compared to the conventional activated sludge reactor, the mass transfer coefficients in the flexible fibre reactor were similar to but slightly lower, and less sensitive to the variation in the ratio of flow rates. It indicated that the fibre packing in the reactor hindered the oxygen transfer to some extent. 相似文献