共查询到17条相似文献，搜索用时 171 毫秒
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采用循环式生物曝气滤池工艺（CBAF）,对炼油碱性污水硫化物进行了预处理实验研究,初步探讨其去除机理。研究了不同水力停留时间（HRT）、溶解氧（DO）、pH等对污水中硫化物的影响。当水力停留时间为32h,溶解氧不小于2mg·L^-1,pH范围在5～8时,硫化物平均去除率达到99．5％,且循环式生物曝气滤池工艺处理效果好．运行稳定。 相似文献
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王昆 《河北能源职业技术学院学报》2009,9(4):62-64,70
目的研究双级上流式曝气生物滤池（BAF）工艺脱碳硝化原理,确定该工艺运行参数．方法通过实验对比气水比、水力负荷、容积负荷等参数的变化对处理效果的影响．结果接种挂膜需要12—19d,常速启动、加载启动均需1-2d．过滤周期由水力负荷2．6m3／（m3·h）时的65h缩短到水力负荷5．2m3／（m2·h）时的46h;当水力负荷进一步提高到7．8m3／（m3·h）时,出水明显恶化．结论气水比过小,溶解氧不足将抑制好氧微生物活性,影响污染物的氧化分解;气水比过大,富余气泡将减少过水断面面积,缩短水力停留时间,影响处理效果．一级滤池、二级滤池气水比宜分别采用2：1和1．3：1,当水力负荷〈5．2m3／（m2·h）,出水水质满足杂用水需要．出水底物质量浓度随容积负荷的升高而上升,受水力负荷的影响较小COD容积负荷〈2．0kg／（m3·d）和NH3-N容积负荷〈0．6kg／（m3·d）时,经两级BAF处理出水在运行周期内能满足排放标准。 相似文献
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文章介绍了生物接触氧化法在国内外的研究现状,阐述了生物接触氧化法处理效果的影响因素,展望了生物接触氧化法研究和发展的方向.文中以高县县医院污水为例,选择水力停留时间这一项至关重要的参数进行试验.通过改变水力停留时间测试最终处理水质与水力停留时间的关系.结果表明:COD Cr及BOD5的去除率随水力停留时间的延长而逐渐增大.当水力停留时间大于4 h,出水COD Cr及BOD5均达到《医疗机构水污染物排放标准》GB 18466-2006的排放要求;验证了医院污水处理设备化的可行性.4 h为本试验条件下最为经济的水力停留时间,为设备设计提供了可选参数. 相似文献
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文章介绍了生物接触氧化法在国内外的研究现状,阐述了生物接触氧化法处理效果的影响因素,展望了生物接触氧化法研究和发展的方向．文中以高县县医院污水为例,选择水力停留时间这一项至关重要的参数进行试验．通过改变水力停留时间测试最终处理水质与水力停留时间的关系．结果表明：CODcr及BOD5的去除率随水力停留时间的延长而逐渐增大．当水力停留时间大于4h,出水CODcr及BOD5均达到《医疗机构水污染物排放标准》GB18466—2006的排放要求;验证了医院污水处理设备化的可行性．4h为本试验条件下最为经济的水力停留时间,为设备设计提供了可选参数． 相似文献
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通过中试研究,考察了生物强化活性滤池工艺对黄浦江原水中微量有机污染物的去除机理及去除效果。实验结果表明,该工艺对分子量小于1 000 D和3 000～10 000 D范围内的有机物可有效去除;生物强化滤池表面吸附生物量可达100 nmolP/g,为普通石英砂的5～10倍;有机物及氨氮的去除效果明显高于普通砂滤池,在10 min空床停留时间下,对模拟沉淀出水氨氮的去除率可达57%～67%。 相似文献
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试验以实验室自配的污水模拟小城镇生活污水,基于悬挂填料AmOn一体化反应器,通过调节蠕动泵转速和气体流量计考察水力停留时间和曝气量对COD(Cr)、NH4+-N、TN、TP去除率的影响。试验结果显示,当HRT=14h时,各污染物去除率分别为89.15%、99.02%、48.59%、32.47%;当曝气量为600 L/h,为89.87%、99.74%、81.3%、35.04%。最终采用层次分析法,从污染物去除效率、处理效率、运行成本三个角度进行综合评价,得出水力停留时间14h、曝气量600L/h的工况为试验的最优工况。 相似文献
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本文在以复合式膜生物反应器系统为基础,以模拟城市污水为处理对象。通过运行条件优化研究,综合脱氮除磷效果及经济因素,将复合区水力停留时间控制在7h左右。此时系统总去除率为:CODcr≧96.28%、NH3-N≧97.54%、TN≧74.87%、TP≧74.34%,出水可以稳定保证在CODcr≦14.35mg/L、NH3-N≦0.74mg/L、TN≦9.02mg/L、TP≦1.05mg/L。效果较好。 相似文献
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HE Qiang ZHANG Yu-ping XU Jian-bin 《重庆大学学报(英文版)》2005,4(4):208-212
In this paper, the characteristics of integrated biological aerated filter （IBAF） applied to municipal wastewater treatment were studied in a pilot scale experiment. The experimental results showed that IBAF has high efficiencies in removing organic pollutants, such as CODCr and SS, in municipal wastewater. The removal rates of CODCr and SS can reach over 90% and 80%, respectively, when COD and SS in the influent are 234 mg L^-1 and 112 mg L^-1, hydraulic retention time （HRT） is 8 h, and the aerated intensity is in the range of （0.5 to 0.6） L m^-2 s^-1. 相似文献
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ZHANG Hong-jing LONG Teng-rui CAO Yan-xiao 《重庆大学学报(英文版)》2006,5(3):152-156
1 Introduction ? The biological aerated filter technique has developed rapidly since 1980s, and is widely used in municipal sewage treatment. It has been used in the primary and secondary treatment processes due to its desirable economical efficiency and … 相似文献
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Biological aerated filters have many advantages such as small volume and high treatment efficiency. This research focused on sewage treatment performance of integrated biological aerated filter (IBAF) under different conditions such as aeration, hydraulic retention time and the height of fillers layer, to identify the turn of marked affecting factor of removal performance through orthogonal experiments, optimize the function parameter of IBAF, reveal the regularity of sewage treatment of IBAF under different conditions, and adopt suitable measures to guarantee excess water quality of IBAF. 相似文献
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LONG Teng-rui CAO Yan-xiao ZHANG Hong-jing GAO Xiao-tao 《重庆大学学报(英文版)》2006,5(4):223-228
1 Introduction a Water eutrophication becomes increasingly serious owing to untreated or illegally discharged domestic as well as industrial wastewater. Hopefully, more strict requirements for nitrogen and phosphorus removal have been set in new wastewate… 相似文献
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Qing WEN Ying WU Li-xin ZHAO Qian SUN Fan-ying KONG 《Journal of Zhejiang University. Science. B》2010,11(2):87-93
A sequential anode-cathode double-chamber microbial fuel cell (MFC), in which the effluent of anode chamber was used as a continuous feed for an aerated cathode chamber, was constructed in this experiment to investigate the performance of brewery wastewater treatment in conjugation with electricity generation. Carbon fiber was used as anode and plain carbon felt with biofilm as cathode. When hydraulic retention time (HRT) was 14.7 h, a relatively high chemical oxygen demand (COD) removal efficiency of 91.7%–95.7% was achieved under long-term stable operation. The MFC displayed an open circuit voltage of 0.434 V and a maximum power density of 830 mW/m3 at an external resistance of 300 ?. To estimate the electrochemical performance of the MFC, electrochemical measurements were carried out and showed that polarization resistance of anode was the major limiting factor in the MFC. Since a high COD removal efficiency was achieved, we conclude that the sequential anode-cathode MFC constructed with bio-cathode in this experiment could provide a new approach for brewery wastewater treatment. 相似文献
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研究了组合工艺(高温55℃UASB反应器一常温三相好氧生物流化床)对含盐偶氮染料活性嫩黄X-6G的去除能效。试验结果表明:在水温为55℃,运行周期120d,水力停留时间18h的条件下,此工艺对于CODCr为600～1 000mg/L,含盐量为25～35g/L,活性嫩黄X-6G的浓度为40～50mg/L的染料废水,染料及CODCr的去除率可达80%～90%。 相似文献
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从怀化市及沅陵、中方、麻阳等县采集野生香菇子实体,通过分离、初筛、复筛和栽培试验,选育出一株较好的菌株香菇9907.香菇菌株9907属于低温结实型,菌丝体生长速度快,花菇率及生物学效率均较高,适合代料栽培. 相似文献