| 基于生态安全的DAT-IAT城市污水处理工艺改进研究 |
| |
| 引用本文： | 朱爽,华涛,周启星,范亚维,吴琼.基于生态安全的DAT-IAT城市污水处理工艺改进研究[J].环境工程学报,2009,3(9):1567-1572. |
| |
| 作者姓名： | 朱爽 华涛 周启星 范亚维 吴琼 |
| |
| 作者单位： | 1. 南开大学环境科学与工程学院,教育部环境污染过程与基准重点实验室,天津300071
2. 南开大学环境科学与工程学院,教育部环境污染过程与基准重点实验室,天津300071;中国科学院沈阳应用生态研究所,中国科学院陆地生态过程重点实验室,沈阳110016 |
| |
| 基金项目： | 高等学校科技创新工程重大项目培育资金项目（707011）；中国科学院陆地生态过程重点实验室资助项目 |
| |
| 摘 要： | 通过正交试验，得到了DAT-IAT工艺和A/DAT-IAT工艺处理城市污水的常规指标去除和生态毒理指标削减的最优运行条件。结果表明，在正交试验的同一工艺中，COD去除最优运行条件的出水COD值优于生态毒性削减最优运行条件的出水COD值，但前者出水的生态毒性较大。由于厌氧池的水解酸化作用，A/DAT-IAT工艺对COD和生态毒性的处理效果均优于DAT-IAT工艺，并且回流总能耗低于DAT-IAT工艺，但是出水COD仍不达标。为了降低进入工艺的COD的总量，以絮凝沉淀做为预处理工艺，并采用Al残留量最小的絮凝剂投药量以降低出水中残留Al带来的生态风险。结果表明，在COD去除最优运行条件下，具有絮凝预处理的工艺对COD的去除效果优于没有絮凝预处理的工艺。絮凝-A/DAT-IAT工艺在COD去除最优运行条件下出水COD为104.46 mg/L，满足排放标准。在毒性削减最优运行条件下，具有絮凝预处理的工艺的出水生态毒性有所上升，但是污染物的总量得到了大幅削减。絮凝-A/DAT-IAT工艺与DAT-IAT工艺相比，在污染物去除效率得到大幅增加的同时，生态毒性得到有效控制，生态安全得到了有效的保障。
|
| 关 键 词： | DAT-IAT工艺 A/DAT-IAT工艺 絮凝 生态毒理指标 常规指标 |
| 修稿时间： | 1/7/2009 12:00:00 AM |
Research on improvement of DAT-IAT municipal wastewater treatment process based on eco safety |
| |
| Zhu Shuang,Hua Tao,Zhou Qixing,Fan Yawei and Wu Qiong.Research on improvement of DAT-IAT municipal wastewater treatment process based on eco safety[J].Techniques and Equipment for Environmental Pollution Control,2009,3(9):1567-1572. |
| |
| Authors: | Zhu Shuang Hua Tao Zhou Qixing Fan Yawei and Wu Qiong |
| |
| Institution: | 1.Key Laboratory of Pollution Processes and Environmental Criteria at Ministry of Education, College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China,1.Key Laboratory of Pollution Processes and Environmental Criteria at Ministry of Education, College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China,1.Key Laboratory of Pollution Processes and Environmental Criteria at Ministry of Education, College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China;2.Key Laboratory of Terrestrial Ecological Process, Institute of Applie,1.Key Laboratory of Pollution Processes and Environmental Criteria at Ministry of Education, College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China and 1.Key Laboratory of Pollution Processes and Environmental Criteria at Ministry of Education, College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China |
| |
| Abstract: | Optimum conditions of regular indicators removal and ecotoxicology indicators reduction of municipal wastewater treated by DAT-IAT process and A/DAT-IAT process were studied by orthogonal experiments.Results showed that in the same orthogonal experimental process,the effluents COD under the optimum COD removal conditions were better than that under the optimum ecotoxicity reduction conditions,but the effluents ecotoxicity of the former were higher than that of the latter.Because of hydrolysis-acidification,... |
| |
| Keywords: | DAT-IAT process A/DAT-IAT process flocculation ecotoxicology indicators regular indicators |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《环境工程学报》浏览原始摘要信息 |
| 点击此处可从《环境工程学报》下载免费的PDF全文 |
|
