排序方式: 共有87条查询结果,搜索用时 15 毫秒
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混凝-MBBR法处理造纸中段废水 总被引:4,自引:0,他引:4
采用混凝-MBBR法对某厂造纸中段废水进行了处理,探讨了在混凝处理中PAFC、黄土加入量和pH值对COD、SS去除率的影响,并对MBBR法处理废水的条件进行了优化,结果表明,水力停留时间8 h,曝气气水比为4∶1,CODCr容积负荷为2.7 kg/(m2.d)时,经强化混凝-MBBR法处理的废水CODCr和SS的去除率分别可达92.1%和93.3%,出水水质达到GB3544—2001所规定的排放标准。 相似文献
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青岛李村河污水厂升级改造工程设计及运行 总被引:5,自引:1,他引:4
青岛李村河污水处理厂一、二期总处理规模为17×104m3/d,改造前出水水质执行<城镇污水处理厂污染物排放标准>(GB 18918-2002)的二级标准.升级改造工艺在原VIP工艺(一期)及改良A/A/O工艺(二期)基础上增加MBBR强化硝化与反硝化以提高生物脱氮效率,深度处理采用混凝沉淀/滤布滤池工艺,通过冬季两个多月的试运行,脱氮除磷效果显著提高,出水水质达到了<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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针对工业废水的处理问题,采用移动床生物膜反应器(Moving Bed Biofilm Reac-tor,MBBR)法,有效去除了工业废水中S2-、NH3和N2,使出水化学耗氧量(Chemical OxygenDemand,COD)达标,提高了反应器的废水处理效率。研究结果表明:MBBR法可达到较好的污水处理效果,MBBR法与厌氧好氧工艺及生物膜-活性污泥工艺等不同工艺组合,将为今后污水处理提供更多的途径。 相似文献
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Bijan Bina Farzaneh Mohammadi Mohammad Mehdi Amin Hamid Reza Pourzamani Zeynab Yavari 《中国化学工程学报》2018,26(4):822-829
The presence of AlkylPhenols (APs) in aquatic systems is considered as one of the environmental concerns in recent decades which are generally used as surfactants. APs are endocrine disruptors and estrogen-mimicking, causing harmful effects such as feminization and carcinogenesis on aquatic environment and human health. The most commercially important APs are 4-NonylPhenol (4-NP) and 4-tert-OctylPhenol (4-t-OP). Moving bed biofilm reactor (MBBR), which combined attached and suspended growth advantages, is an advanced biological treatment process for municipal and industrial wastewaters that has drawn considerable attention from many researchers to remove toxic pollutants from wastewater. The aim of this research was to evaluate Bacterial activities and kinetic coefficients in the presence of APs. This study was carried out using laboratory-scale MBBR fed with synthetic wastewater containing 4-NP and 4-t-OP. The reactor was operated at different loads of chemical oxygen demand (COD) and APs and different hydraulic retention time (HRT). The respirometric technique was applied to investigate the effect of APs on heterotrophic and autotrophic activity and kinetic coefficients in biomass obtained from MBBR. Respirometric technique demonstrates a reliable tool in order to assess the biofilm kinetic coefficients and biomass viability to insert in the mathematical models. The calculated kinetic parameters were in the range of conventional and extended aeration activated sludge processes. The results demonstrate that APs have significant inhibitory effects on activity and growth rate of heterotrophic and autotrophic bacteria, heterotrophs have been less affected by the presence of 4-NP and 4-t-OP, and these compounds had greater inhibitory effects on autotrophic bacteria. 相似文献
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移动床生物膜反应器脱氮除磷技术 总被引:10,自引:0,他引:10
本文简要介绍了移动床生物膜反应器的特点,总结了移动床生物膜反应器脱氮和除磷的影响因素,指出序批式的运行方式可以同时达到脱氮和除磷的效果。 相似文献
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胜利油田某注水站建立了处理能力为200 m~3/d的生化-超滤污水处理流程,处理后用于低渗透油层回注,其中生化工艺采用的是移动床生物膜(MBBR)工艺,超滤采用的管式中空纤维膜。从水质分析、流程启动、初期调试、不同节点水的水质跟踪检测几方面进行了深入研究,从2018年6月投产至今运行正常,超滤压力跨膜压差由0.018 MPa升高到0.028 MPa,污水含油质量浓度由12~659 mg/L降至0.0~0.3 mg/L,悬浮物质量浓度由15~255 mg/L降至0.1~0.3 mg/L,SRB数量由25~60个/mL降至0,粒径中值降至0.86~1.00μm,COD值由216~505 mg/L降至73~123 mg/L,优于SY/T 5329-2012的一类水指标。 相似文献
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对外表面载体紊动床生物膜反应器进行了不同填充率条件下的平行试验,研究了填充率对紊动床生物膜反应器处理效果、附着性能及悬浮生物量的影响。结果表明:当反应器中填充率从10%增高至20%时,系统对COD和氨氮的去除效率提高,且COD的比降解速率提高了2、85倍、生物膜胞外蛋白质含量较10%填充率时稳定,后者悬浮生物量浓度为前者的1.67倍以上,而单位载体上的生物膜量则减至前者的65%以下。因此,外表面载体的紊动床生物膜反应器中填充率越高,生物膜脱附量越大,悬浮微生物浓度越大,生物膜活性越高。 相似文献