共查询到19条相似文献,搜索用时 125 毫秒
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膜生物反应器是近年来发展的一种新型的水处理技术。本文主要介绍了膜生物反应器在印染废水、造纸废水和垃圾渗滤液等难降解废水处理中的应用以及近年来国内一些研究成果,并指出今后膜生物反应器在废水处理方面的研究方向。 相似文献
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根据当前我国医院废水处理存在的问题,介绍了一种新型的废水处理技术—膜生物反应器(MBR)的研究情况,包括膜生物反应器的分类,与医院传统消毒工艺对比的优势,当前在医院废水处理过程中存在的问题以及该技术处理医院废水的研究进展,并对膜生物反应器的发展前景进行了展望。 相似文献
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膜生物反应器在环境工程中的应用前景及研究发展方向 总被引:2,自引:0,他引:2
膜生物反应器作为膜技术和污水生物处理技术有机结合产生的废水处理新工艺,具有良好的发展前景。文章介绍了膜生物反应器的典型工艺及组成,简述了其优点及与其它处理工艺之间的区别,分析了目前限制膜生物反应器应用的几个瓶颈问题,讨论了膜生物反应器在废水处理运行中膜污染的机理与防治措施,指出通过开展污染机理和新型膜材料的研究是解决膜生物反应器大规模应用的关键,并对其发展前景进行了展望。 相似文献
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膜生物反应器作为一种新兴的污水处理技术与工艺,其研究与应用受到了社会各界的广泛关注。文章综述了高氨氮废水的特点、危害,简要介绍了膜生物反应器的特点及各国学者将其应用在废水处理中的研究成果,指出了膜生物反应器的不足和应对策略,展望了未来膜生物反应技术在我国的发展前景。 相似文献
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以某钢厂冷轧厂废水处理站的中型膜生物反应器为背景,介绍采用PLC和Win CC设计膜生物反应器废水处理监控系统的方案。给出其硬件结构、软件流程和监控界面。 相似文献
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膜生物反应器(MBR)在污水处理领域的应用日益广泛,填料的投加对MBR污水处理效率和膜污染进程有一定的影响。本文分别向MBR中投加不同量的软性和硬性悬浮填料,研究了悬浮填料对MBR运行效率及膜污染的影响。结果表明,投加填料后MBR对COD、氨氮和总磷等污染物的处理效率有所提高,明显减缓了膜污染的进程。软性填料对MBR的改善效果优于硬性填料,投加20%的软性填料时,系统对COD、氨氮和总磷的去除率分别可达96.53%、98.21%和52.75%,系统运行30天时的膜污染情况比未投加填料的系统减缓了41.43%。通过对比发现软性填料能够为微生物提供更大的生存空间,提高反应器内的微生物量,从而提高MBR对污水的处理效率同时改善膜污染,是一种加强MBR系统的适宜填料,最佳投加量为反应器有效体积的20%。 相似文献
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Exploration of two major commercialized flat-sheet and hollow-fiber membranes in a submerged membrane fungi reactor fed with a synthetic textile wastewater revealed striking differences in the extent and mechanism of fouling between the two types, indicating a case-specific scope of choice between the two for industrial wastewater treatment. The hollow-fiber membrane exhibited fouling with a cake layer composed of fungi and starch, intensity being proportional to the operating flux (0.05–0.3 m/d). Conversely, the flat-sheet membrane suffered from immediate internal pore blocking beyond a critical flux of 0.2 m/d. During the experiment with major constituents of the synthetic wastewater separately, while media containing only starch and only dye induced negligible fouling, flux-dependent pore blocking was evident for both the hollow-fiber (0.288 m/d) and flat-sheet membranes (1.3 m/d) for the mixture of starch and dye. Despite a remarkable 99% color and 97% TOC removal achieved by both membranes, fouling with different modes and intensity for the two types under similar conditions and for the same type of membrane under different exposure conditions warrants development of suitable modules for such recalcitrant wastewater. 相似文献
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厌氧膜生物反应器在污水处理中的研究进展 总被引:1,自引:0,他引:1
综述了厌氧膜生物反应器中的微生物种群与分布特点、厌氧膜生物反应器在污水处理中的应用情况,讨论了影响厌氧膜生物反应器性能的主要参数、膜的污染预防与控制等,最后探讨和展望了厌氧膜生物反应器的应用前景,并指出了该领域今后的研究方向。 相似文献
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A review on the forward osmosis applications and fouling control strategies for wastewater treatment
Linwei Zhu Chun Ding Tengyang Zhu Yan Wang 《Frontiers of Chemical Science and Engineering》2022,16(5):661
During the last decades, the utilization of osmotic pressure-driven forward osmosis technology for wastewater treatment has drawn great interest, due to its high separation efficiency, low membrane fouling propensity, high water recovery and relatively low energy consumption. This review paper summarizes the implementation of forward osmosis technology for various wastewater treatment including municipal sewage, landfill leachate, oil/gas exploitation wastewater, textile wastewater, mine wastewater, and radioactive wastewater. However, membrane fouling is still a critical issue, which affects water flux stability, membrane life and operating cost. Different membrane fouling types and corresponding fouling mechanisms, including organic fouling, inorganic fouling, biofouling and combined fouling are therefore further discussed. The fouling control strategies including feed pre-treatment, operation condition optimization, membrane selection and modification, membrane cleaning and tailoring the chemistry of draw solution are also reviewed comprehensively. At the end of paper, some recommendations are proposed. 相似文献
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Bui Xuan Thanh Christelle Guigui Roger Ben Aim Junfeng Wan Chettiyapan Visvanathan 《Desalination》2010,250(2):850-854
This study investigates the sludge and effluent characteristics of a new process of coupling an aerobic granular sludge bioreactor with a membrane filtration. The effluent and mixed liquor of sequencing batch airlift reactor (SBAR) were analyzed at various aeration shear stresses when fed with high nitrate containing wastewater. The presence of nitrate nitrogen and aerobic/anoxic condition was able to improve the sludge characteristics in terms of biomass retention, density and settling ability in SBAR. MLSS and SVI could reach 9 g/L and 44 mL/g respectively at the aeration rate of 0.6 cm/s. The presence of nitrate and the denitrification process could minimize the fouling potential. The membrane fouling can be better correlated to SBAR sludge characteristics than biomass concentration. The high aeration rate in the reactor increased the fouling resistance due to production of large MW soluble microbial products (30-50 kDa). The soluble fraction of SBAR effluent contained mainly hydrophilic substances when nitrate is present in the wastewater. 相似文献