| 低温下DO对SBR氮磷去除效果与EPS的影响 |
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| 引用本文： | 张兰河,李军,贾艳萍,张海丰.低温下DO对SBR氮磷去除效果与EPS的影响[J].化学工程,2012,40(7):6-9. |
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| 作者姓名： | 张兰河 李军 贾艳萍 张海丰 |
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| 作者单位： | 1. 东北电力大学化学工程学院,吉林吉林132012；哈尔滨工业大学城市水资源与水环境国家重点实验室,黑龙江哈尔滨150090
2. 东北电力大学化学工程学院,吉林吉林,132012 |
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| 基金项目： | 城市水资源与水环境国家重点实验室开放基金，吉林省科技发展计划社会发展重点项目，吉林市科技计划项目 |
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| 摘 要： | 为了考察低温(7—15℃)下溶解氧(DO)对氮磷去除效果与胞外聚合物(EPS)质量浓度的影响,研究采用序批式生物反应器(SBR)处理屠宰废水。结果表明:混合液悬浮固体质量浓度(MLSS)为3 000 mg/L,在pH值和污泥龄(SRT)分别为6.5—8.0和20 d的条件下,当DO<2 mg/L时,TN和TP的去除率分别保持在79.4%和80.8%,EPS稳定在503.5 mg/L;当DO为2—3 mg/L时,TN和TP的去除率分别为78.5%和89.32%,EPS为544.2 mg/L。当DO为3—5 mg/L时,随着DO的升高,TN去除率逐渐降低至61.77%,TP去除率保持在85.5%,EPS提高至578.4 mg/L。
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| 关 键 词： | 溶解氧 混合液悬浮固体质量浓度 SBR 胞外聚合物 |
Effect of DO on removal efficiency of N, P and EPS using sequencing batch reactor at low temperature |
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| ZHANG Lan-he
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LI Jun
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JIA Yan-ping
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ZHANG Hai-feng.Effect of DO on removal efficiency of N, P and EPS using sequencing batch reactor at low temperature[J].Chemical Engineering,2012,40(7):6-9. |
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| Authors: | ZHANG Lan-he LI Jun JIA Yan-ping ZHANG Hai-feng |
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| Affiliation: | 1(1.School of Chemical Engineering,Northeast Dianli University,Jilin 132012,Jilin Province,China; 2.State Key Laboratory of Urban Water Resource and Environment,Harbin Institute of Technology,Harbin 150090,Heilongjiang Province,China) |
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| Abstract: | Sequencing batch bioreactor(SBR) was used to treat slaughter wastewater in order to investigate the effect of DO on the removal efficiency of N,P and EPS mass concentration at low temperature(7-15 ℃).The results show that when the mixed liquor suspended solids mass concentration(MLSS),pH and SRT are 3 000 mg/L,6.5-8.0 and 20 d,respectively,EPS is 503.5 mg/L,and the removal efficiencies of TN and TP are maintained at 79.4% and 80.8% respectively if DO < 2 mg/L.When DO is 2-3 mg/L,EPS is 544.2 mg/L,and the removal efficiencies of TN and TP are 78.5% and 89.32% respectively.When DO is 3-5 mg/L,and with the increasing of DO,the removal efficiency of TN is gradually decreased to 61.77%,the removal efficiency of TP is maintained at 85.5%,and EPS is improved to 578.4 mg/L. |
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| Keywords: | DO mixed liquor suspended solids mass concentration SBR EPS` |
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