[1]王宏伟,张国珍,武福平,等.两级A/O生物滤池与微絮凝过滤组合处理二级出水[J].中国给水排水,2022,38(5):65-69.
　WANGHong-wei,ZHANGGuo-zhen,WU Fu-ping,et al.Two?stage A/O Biofilter Combined with Micro-flocculation Filtration for Secondary Effluent Treatment[J].China Water & Wastewater,2022,38(5):65-69.
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两级A/O生物滤池与微絮凝过滤组合处理二级出水

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第38卷 期数: 2022年第5期 页码: 65-69 栏目: 出版日期: 2022-03-01
Title:
Two?stage A/O Biofilter Combined with Micro-flocculation Filtration for Secondary Effluent Treatment
作者:
王宏伟1,2， 张国珍1,2， 武福平1,2， 马宏琛3， 闵芮1,2， 严婉铒1,2
（1.兰州交通大学 环境与市政工程学院，甘肃 兰州 730070；2.甘肃省黄河水环境重点实验室，甘肃 兰州 730070；3.南京地铁集团有限公司，江苏 南京 210008）
Author(s):
WANG　Hong-wei1，2， ZHANG　Guo-zhen1，2， WU Fu-ping1，2， MA　Hong-chen3， MIN　Rui1，2， YAN　Wan-er1，2
（1. School of Environmental and Municipal Engineering， Lanzhou Jiaotong University， Lanzhou 730070， China； 2. Key Laboratory of Yellow River Water Environment in Gansu Province， Lanzhou 730070， China； 3. Nanjing Metro Group Co. Ltd.， Nanjing 210008， China）
关键词:
两级A/O生物滤池;  微絮凝;  二级出水;  低C/N值;  脱氮除磷
Keywords:
two-stage A/O biofilter;  micro-flocculation;  secondary effluent;  low carbon-nitrogen ratio;  nitrogen and phosphorus removal
摘要:
针对西北地区低C/N值城镇污水处理厂二级出水，采用两级A/O生物滤池与微絮凝过滤组合工艺强化脱氮除磷效果。结果表明，生物膜形成后，在溶解氧、水力负荷、流量分配比分别为4 mg/L、1.2 m3/（m2·h）、70%∶30%的条件下，该工艺对COD、NH4+-N的平均去除率分别为85%、94%，出水平均浓度分别为19.86、0.48 mg/L，达到《地表水环境质量标准》（GB 3838—2002）Ⅲ类水标准；对TP的去除率为75%，平均出水TP浓度为0.22 mg/L，达到Ⅳ类水标准；对TN的去除率为72%，平均出水TN浓度为6.77 mg/L，远低于《城镇污水处理厂污染物排放标准》（GB 18918—2002）一级A 排放标准。组合工艺在保证COD去除效果的基础上实现了脱氮除磷。
Abstract:
A combined process of two-stage A/O biofilter and micro-flocculation filtration was applied to treat the secondary effluent with low C/N ratio from a municipal wastewater treatment plant in Northwest China, and the enhanced performance of nitrogen and phosphorus removal was investigated. After biofilm formation, when dissolved oxygen, hydraulic load and flow distribution ratio were 4 mg/L, 1.2 m3/(m2·h) and 70%∶30%, the average removal efficiencies of COD and NH4+-N were 85% and 94%, respectively, and their average concentrations in the effluent were 19.86 mg/L and 0.48 mg/L, respectively, which met the class Ⅲ criteria specified in Environmental Quality Standards for Surface Water (GB 3838-2002). The removal efficiency of TP was 75%, and its average concentration in the effluent was 0.22 mg/L, which met the class Ⅳ criteria specified in GB 3838-2002. The removal efficiency of TN was 72%, and its average concentration in the effluent was 6.77 mg/L, which was much lower than the first level A criteria specified in the Dischange Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918-2002). The combined process not only achieved a good COD removal performance but also realized nitrogen and phosphorus removal.

相似文献/References:

[1]夏沛青.改良AAO+微絮凝工艺用于高集约半地下式污水厂[J].中国给水排水,2023,39(16):83.
　XIAPei-qing.Application of Modified AAO and Micro-flocculation Process in Highly Intensive Semi-underground Wastewater Treatment Plant[J].China Water & Wastewater,2023,39(5):83.

更新日期/Last Update: 2022-03-01