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A^2/O与混凝沉淀法处理垃圾渗滤液研究 总被引:19,自引:1,他引:18
采用厌氧-缺氧-好氧-混凝沉淀工艺处理垃圾填埋场渗滤液,当进行OCD为2000mg/L左右时,好氧出水COD可降至900mg/L,混凝沉淀出水COD可降至80mg/L,当时水氨氮浓度为1300mg/L左右,好氧出水氮氮<10mg/L。生物处理系统对总氮的去除率较低,仅为20%-30%,因而提高总氮的去除率应是今后研究的方向之一。 相似文献
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采用连续流的缺氧/厌氧/缺氧/好氧中试反应器处理深圳市布吉城镇河道污水,考察了不同季节时对COD、NH4+-N、TN和TP的去除效果,以期为处理布吉河道污水的新建污水处理厂提供运行参数。中试结果表明,在夏季降雨期,当进水COD为36.4~195.5 mg/L、总氮为13.7~29.5 mg/L时,出水值分别为(22.7~87.9)和(10.5~19.2)mg/L,平均去除率分别为72.1%和26.0%;在冬季枯水期,当进水COD为168.0~317.1 mg/L、总氮为33.0~41.0 mg/L时,出水值分别为(20.2~58.0)和(13.0~22.5)mg/L,平均去除率分别为84.7%和51.4%。当进水氨氮为9.38~39.02 mg/L时,出水值为0.01~8.01 mg/L,平均去除率为96.3%,在恢复运行期出水氨氮浓度达到稳定所需时间为COD和总氮的3倍左右。进水TP为1.04~5.58 mg/L,出水TP平均为0.97 mg/L。当聚合氯化铝投加量为15 mg/L时,出水总磷平均值进一步降低至0.30 mg/L,去除率为91.5%,达到了《城镇污水处理厂污染物排放标准》(GB 18918—2002)的一级A标准。 相似文献
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高效硝化耦合臭氧催化氧化深度处理石化废水中试 总被引:1,自引:0,他引:1
采用高效硝化(HENT)耦合臭氧催化氧化技术深度处理某石化公司丙烯腈废水。中试结果表明,HENT处理效果良好,在进水氨氮为88~286 mg/L的条件下,出水氨氮平均为0.53mg/L,去除率为99.72%。COD主要通过臭氧催化氧化和BAF来去除,在进水COD平均浓度为259 mg/L的条件下,出水平均浓度可降至57 mg/L,对COD的平均去除率达到了75.6%;随着BAF运行的稳定,当进水COD200 mg/L时,出水COD可降至40 mg/L以下。另外,高效硝化耦合臭氧催化氧化技术对总氰化物、SS、硫化物和总磷也有一定的去除效果。 相似文献
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分别采用2种不同填料的改良A2/O-MBBR中试装置处理深圳市布吉河道污水,考察了该工艺的启动和雨季运行特征。经过一个月的启动运行,2组系统K3和XD填料上附着的生物量分别为14.76和6.18 mg,工艺挂膜成功。雨季的进水SS为14~3 492 mg/L,平均为232mg/L,大量的泥沙进入中试装置导致污泥的MLVSS/MLSS值从0.40降至0.19,SVI从63 mL/g降至23 mL/g。通过减小污泥排放量提高MLSS至4 000~5 000 mg/L,当进水COD为42.1~215.0mg/L时,2组系统出水COD分别为2.7~80.9 mg/L和4.7~87.6 mg/L,平均去除率分别为81.8%和79.1%;当进水氨氮和总氮分别为1.58~20.88 mg/L和5.4~26.2 mg/L时,对氨氮的去除率在98.0%以上,对总氮的去除率均为23.7%。通过投加60 mg/L的甲醇作为外加碳源,可使出水总氮稳定在15 mg/L以下,达到一级A标准。当进水总磷为0.80~6.12 mg/L时,2组系统的出水值分别为0.24~0.92 mg/L和0.26~0.92 mg/L,平均去除率分别为63.6%和67.2%。 相似文献
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ABR/MBBR组合工艺处理草浆中段废水的中试研究 总被引:1,自引:0,他引:1
通过现场中试考察了ABR/MBBR组合工艺处理草浆中段废水的效果.结果表明,当ABR进水COD为1 339~2 948 mg/L、HRT为24~48 h时,其对COD的去除率约为50%;ABR出水流入MBBR.当MBBR的HRT为6~12 h时,其对COD的去除率约为60%,MBBR出水COD稳定在350 mg/L左右.在Fe2(SO4)3投量为1 250~1 750 mg/L的情况下,经混凝、沉淀处理后出水COD<100 mg/. 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