| 引用本文: | 罗亚红,李冬,曾辉平,蔡言安,许达,张杰.末端间歇曝气A2/O工艺处理低碳氮（磷）比生活污水[J].哈尔滨工业大学学报,2015,47(2):79.DOI:10.11918/j.issn.0367-6234.2015.02.015 |
| LUO Yahong,LI Dong,ZENG Huiping,CAI Yanan,XU Da,ZHANG Jie.Treatment of low C/N (P) domestic sewage using terminal intermittent aeration A2/O technique[J].Journal of Harbin Institute of Technology,2015,47(2):79.DOI:10.11918/j.issn.0367-6234.2015.02.015 |
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| 末端间歇曝气A2/O工艺处理低碳氮（磷）比生活污水 |
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罗亚红1,2, 李冬1, 曾辉平1, 蔡言安1, 许达1, 张杰1,3
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(1. 水质科学与水环境恢复工程北京市重点实验室(北京工业大学),100124 北京;2.河南师范大学 环境学院, 黄淮水环境与污染防治省部共建教育部重点实验室, 河南省环境污染控制重点实验室,453007 河南 新乡; 3. 城市水资源与水环境国家重点实验室(哈尔滨工业大学),150090 哈尔滨)
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| 摘要: |
| 为提高A2/O工艺处理低碳氮（磷）比污水的同步脱氮除磷效率,使出水达到GB18918—2002一级A标准,采用2种模式A2/O工艺处理实验废水. 模式1为投加填料的A2/O工艺,反应器在优化工况tHR=8.2 h、污泥回流比R=80%、硝化液回流比r=250%~300%、ρ(DO)=1.5~0.5 mg/L条件下运行,出水TP质量浓度仍超标. 模式2为模式1的改良——末端间歇曝气填料A2/O工艺,好氧段后增设1个间歇曝气段,并改变污泥回流和排泥方式,系统在长污泥龄tSR=22.3 d、A2/O段优化工况、间歇曝气段tHR=4 h、曝气周期1 h（曝气1 min（ ρ(DO)=0.3~0.5 mg/L）、沉淀59 min)的条件下,COD、NH4+-N、TP和TN的平均去除率分别达87.8%, 99.1%, 95.5%和90.8%,出水亚硝化率在70%以上,污泥中反硝化除磷菌与聚磷菌比达95.65%. 系统实现了短程硝化反硝化途径的氮磷同步去除,出水满足国家一级A标准. |
| 关键词: 改良A2/O工艺 低碳氮比污水 反硝化除磷 短程硝化 |
| DOI：10.11918/j.issn.0367-6234.2015.02.015 |
| 分类号:X703.1 |
| 基金项目:国家科技重大专项水专项(2012ZX07202-005); 河南省基础与前沿技术研究计划项目(122300410292). |
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| Treatment of low C/N (P) domestic sewage using terminal intermittent aeration A2/O technique |
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LUO Yahong1,2, LI Dong1, ZENG Huiping1, CAI Yanan1, XU Da1, ZHANG Jie1,3
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(1.Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering(Beijing University of Technology), 100124 Beijing, China; 2.School of Environment, Henan Key Laboratory for Environmental Pollution Control, Key Laboratory for Yellow and Huai River Water Environmental and Pollution Control(Henan Normal University), Ministry of Education, 453007 Xinxiang, Henan, China; 3.State Key Laboratory of Urban Water Resource and Environment(Harbin Institute of Technology), 150090 Harbin, China)
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| Abstract: |
| To enhance the simultaneous removal of nitrogen (N) and phosphorus (P) of low C/N (P) ratio sewage by A2/O technique, and ensure the effluent meet the first class level A standard of GB18918—2002, two patterns of A2/O technique were conducted to treat the experimental sewage. Pattern 1 was the A2/O technique with the carrier, under the optimized conditions of tHR=8.2 h, R=80%, r=250%-300%, ρ(DO)=1.5-0.5 mg/L, the concentration of TP in effluent of the system still exceeded the standard. Pattern 2 was the improved pattern 1— terminal intermittent aeration A2/O technique with the carrier, which contained an intermittent aeration zone following the aerobic zone, meanwhile, the approaches of sludge return and discharge were changed. The novel system with the long tSR of 22.3 d ran at the conditions of the optimal operating modes above-mentioned for A2/O zone, tHR=4 h for the intermittent aeration zone, and the aeration cycle was 1 h: aeration time was 1 min (ρ(DO)=0.3-0.5 mg/L) and settling time was 59 min. The operational results showed that the average removal rate of COD, NH4+-N, TP and TN reached 87.8%, 99.1%, 95.5% and 90.8%, respectively. The nitrosation rate of the effluent was above 70%, and DPAO/PAO ratio in sludge was 95.65%, the final effluent of the system met the first class level A of the national standard through the pathway of shortcut nitrification and denitrifying nitrogen and phosphorus removal. |
| Key words: improved A2/O technique low C/N ratio sewage denitrifying phosphorus removal partial nitrification |
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