| 双级曝气生物滤池处理生活污水的工艺参数 |
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| 引用本文： | 王昆.双级曝气生物滤池处理生活污水的工艺参数[J].河北能源职业技术学院学报,2009,9(4):62-64,70. |
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| 作者姓名： | 王昆 |
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| 作者单位： | 河北理工大学,河北,唐山,063000 |
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| 摘 要： | 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。
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| 关 键 词： | 曝气生物滤 脱碳硝化原理 气水比 水力负荷 容积负荷 |
Parameters of Two-stage Biological Aerated Filter Sewage Treatment |
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| WANG Kun.Parameters of Two-stage Biological Aerated Filter Sewage Treatment[J].Journal of Hebei Energy Institute of Vocation and Technology,2009,9(4):62-64,70. |
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| Authors: | WANG Kun |
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| Institution: | WANG Kun (Hebei Polytechnic University, Tangshan, Hebei 063000, China) |
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| Abstract: | The study focused on decarburization and nitrification theory and parameters of two - stage bio - logical berated filter techniques. The impact of COD and NH3 - H removal performance were establish considering forming bio - film ＆ setting - up methods, ratio of gas - to - liquid, hydraulic loading and substrate loading. Technique cost 12 - 19d to accomplished the forming bio -film and 1 -2d for the settingup. Filtering period shrank from 65h at hydraulic loading 2.6m3/（ m2·h） to 46h at hydraulic loadin5. 2m3/（m2·h） ,and the efflux degraded at hydraulic loading 7.8ma/（m2·h）. Owing to the little ratio, the deficiency of DO restricted microbe activity and impacted the contamination oxygenolysis ; owing to too much ratio, overabundance bubbles limited the inside section area, curtailed HRT and influenced treatment effect. Efflux suffice the reused demand when hydraulic loading under 5.2m3/（m2·h） with the two filter ratios 2：1 and 1.3：1 respectively. Efflux concentration increased following substrate loadingg raising less influence with hydraulic loading. Efflux though the two -stage BAF treatment met the integrate wastewater discharge standard well within the filtering period when hydraulic loading under 2kgCOD/（m3·b） and 0. 6kgNH3 - N/（m3·b）. |
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| Keywords: | two - stage biological aerated filter decarbur/zation and nitrification theory ratio of gas - to -liquid hydraulic loading substrate loading |
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