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影响MBR处理效果及膜通量的因素研究 总被引:12,自引:0,他引:12
采用处理规模为10m^3/d的厌氧/好氧膜生物反应器(A/O MBR)处理毛纺印染废水,试验结果表明:当原子COD、BOD5、色度、浊度分别为256.5mg/L,94.8mg/L,64倍,45.65NTU时,相应的出水指标分别为20.2mg/L,1.6mg/L,25倍,0.51NTU,其水质达到《生活杂用水水质标准》(CJ25.1-89);溶解氧是影响处理效果的一个关键因素;随着运行时间的延长、膜污染的增加,温度对膜通量的影响降低;膜面流速较高时,污泥浓度对膜通量没有显著影响。 相似文献
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印染废水水量大、污染物种类多、成分复杂,采用清浊分流、分质处理,可充分发挥各段工艺优势。以双膜法(MBR+RO)为核心,采用物化+生化+膜工艺深度处理印染废水,在系统平均进水COD、氨氮、电导率分别为2 310.35 mg/L、121.20 mg/L、3 420μS/cm的情况下,系统平均产水COD、氨氮、电导率分别为6.28 mg/L、15.87 mg/L、73.70μS/cm,RO产水浊度、色度平均值分别为0.11 NTU、4.47倍,满足印染工艺回用标准。 相似文献
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水解/接触氧化/气浮工艺处理印染废水 总被引:2,自引:0,他引:2
以青岛市某印染废水处理工程为例,介绍了水解/接触氧化/气浮工艺处理印染废水的工艺设计参数、处理效果、工程投资和运行成本.该工程处理水量为300m3/d,进水COD、BOD5和色度分别为644mg/L、151 mg/L和688倍.运行结果表明,对COD、BOD5和色度的去除率分别为88%、92%和95%,相应的出水水质分别为78 mg/L、12 mg/L和31倍,达到<纺织染整工业水污染物排放标准>(GB 4287-1992)的一级排放标准,处理费用为1.01元/m3.该工艺具有运行费用低、处理效果好、操作管理方便等优点. 相似文献
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受某高校基建处的委托,采用曝气生物滤池工艺对该校的洗浴污水进行回用试验研究。结论:结果表明,该工艺出水水质COD〈25mg/L,NH3-N〈115mg/L,BOD5〈10mg/L,浊度〈013NTU,无臭无色。出水符合建设部颁布的《生活杂用水回用水质标准》。实验过程中,BAF工艺的连续运行,出水水质稳定,曝气生物滤池的运行的反冲洗周期可定为6d-7d。 相似文献
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杭州市南星水厂O3/BAC工艺的运行效果分析 总被引:2,自引:0,他引:2
杭州市南星水厂深度处理一期工程采用预臭氧、常规处理、后臭氧、生物活性炭工艺。结合生产性试验确定了预臭氧及后臭氧段的臭氧投量分别为0.30~0.60mg/L和1.50~1.70mg/L。工程投产后的运行结果表明:O、/BAC工艺对微污染源水的处理效果良好,对浊度、CODM。NH4^+-N、NO2^--N的去除率分别为99.2%、(57%~77%)、(61%~99.7%)、(-25%~99.74%),出水浊度〈0.2NTU、色度〈3倍,CODMn、NH4^+-N、NO2^-N分别为0.48~1.57mg/L及0.237、0.053mg/L以下;季节对O3/BAC工艺的净化效果影响较大,春、夏、秋季的除污效果较好,冬季的相对较差。深度处理工艺的制水成本为0.561元/m^3,较常规工艺的(0.447元/m^3)仅增加约0.114元/m^3。 相似文献
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Nigel Coates 《Architectural Design》2006,76(6):44-49
‘Fabric is the perfect mediator between the firm and the flowing.’ Nigel Coates celebrates the textile's rediscovery as a metaphor for the architectural envelope, liberating it from its reputation as having only a supporting, ‘comfort role’ in the interior. He describes his own experiments with textiles at Branson Coates Architecture and the Royal College of Art (RCA), in which they alternately become skin, weave and pattern operating at every scale from the individual body to the urban plan. Copyright © 2006 John Wiley & Sons, Ltd. 相似文献
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Jori Erdman Robert Weddle Thomas Mical Jeffery S. Poss Kevin Hinders Ken McCown Chris Taylor 《Journal of Architectural Education》2002,55(3):174-179
Design-build has been receiving much attention from both the profession and academia in recent years. However, there seems to be many differences in the way that the term is interpreted and applied. This paper reflects upon the results of a conference entitled "Designing/Building/Learning" that sought to explore the issues surrounding this topic through paper sessions, workshops, keynote addresses, and panel discussions. Hands-on approaches to pedagogy in the form of full-scale construction exercises have emerged in schools across the country, but these activities continue to resist theorizing. The Designing/Building/Learning Conference demonstrates this resistance, as well as the compelling role of design-build in education. 相似文献
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采用絮凝沉淀/IC/水解酸化/CASS法处理高浓度制药废水,工程设计规模为830m3/h,该废水具有水量不稳定、氨氮浓度较高、有机物浓度高、生物毒性大等特点。该工程自2012年3月投产至今处理效果稳定,各项出水指标均达到《污水综合排放标准》(GB 8978—1996)的二级标准。 相似文献
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采用UASB/吹脱塔/SBR/纳滤工艺处理垃圾渗滤液,处理规模为800m3/d,垃圾渗滤液COD为8 000~12 000mg/L、BOD5为3000~5 500mg/L、SS为500~800mg/L、NH3-N为1 000~2 000 mg/L,出水COD≤l00mg/L、BOD5≤30 mg/L、SS≤30 mg/L、NH3-N≤25 mg/L,达到国家新建<生活垃圾填埋场污染控制标准>(GB 16889-2008).运行结果表明,该工艺运行稳定,处理效果好. 相似文献
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While attention was riveted on the results of an international design competition for a site over the 34th Street rail yards west of Pennsylvannia Railroad Station, another study was taking place. Working with the community, local multidisciplinary design teams explored an adjacent site through a different process. This process, and its findings, are illuminating. 相似文献