| 3BER-S工艺用于再生水深度脱氮同步去除PAEs的可行性 |
| 摘要点击 2221 全文点击 1217 投稿时间：2015-07-27 修订日期：2015-09-23 |
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| 中文关键词 再生水 深度反硝化脱氮 PAEs 吸附作用 生物降解作用 |
| 英文关键词 reclaimed water deep denitrification PAEs absorption biodegradation |
| 作者 | 单位 | E-mail | | 徐鹏程 | 北京工业大学建筑工程学院, 北京市水质科学与水环境恢复工程重点实验室, 北京 100124
北京市首都规划设计工程咨询开发公司, 北京 100045 | xupengcheng@emails.bjut.edu.cn | | 郝瑞霞 | 北京工业大学建筑工程学院, 北京市水质科学与水环境恢复工程重点实验室, 北京 100124 | haoruixia@bjut.edu.cn | | 张娅 | 北京工业大学建筑工程学院, 北京市水质科学与水环境恢复工程重点实验室, 北京 100124 | | | 王冬月 | 北京工业大学建筑工程学院, 北京市水质科学与水环境恢复工程重点实验室, 北京 100124 | | | 钟丽燕 | 北京工业大学建筑工程学院, 北京市水质科学与水环境恢复工程重点实验室, 北京 100124 | | | 徐浩丹 | 北京工业大学建筑工程学院, 北京市水质科学与水环境恢复工程重点实验室, 北京 100124 | |
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| 中文摘要 |
| 为了考察三维电极生物膜硫自养耦合工艺(3BER-S)对再生水进行深度脱氮同步去除邻苯二甲酸酯(PAEs)的可行性,基于3BER-S反应器内已挂膜活性炭填料静态吸附PAEs能力测定和动态反硝化脱氮同步除PAEs运行结果,分析了3BER-S反应器同步脱氮去除PAEs的工艺特性和作用机制. 结果表明,挂膜活性炭填料对邻苯二甲酸二丁酯(DBP)、 邻苯二甲酸二(2-乙基)己酯(DEHP)的平均吸附去除率分别为85.84%、 97.12%,平衡吸附容量为0.1426mg ·g-1、 0.162 mg ·g-1,达到吸附饱和的时间分别为120 min、 60 min; PAEs对3BER-S反硝化系统脱氮效果影响不明显,加入PAEs前后反应器出水TN的浓度在1~2 mg ·L-1之间,TN的平均去除率达到了94%以上; 3BER-S反硝化系统对PAEs有较强的去除能力,出水中DBP和DEHP的浓度在0~6 μg ·L-1范围内、 去除率均在96%以上; 3BER-S对PAEs的去除是吸附、 生物降解和电化学协同作用结果. 模拟污水厂二级出水经过3BER-S工艺处理后,DBP和DEHP的浓度满足《城市污水再生利用地下水回灌水质标准》(GB/T 19772-2005)所规定的限值. |
| 英文摘要 |
| In order to investigate the feasibility of deep denitrification and simultaneous removing phthalate esters (PAEs) in the process of reclaimed water treatment uses three-dimensional biofilm-electrode reactor coupled with sulfur autotrophic deep denitrification technology (3BER-S), the technological characteristics and mechanisms were analyzed based on determining the static adsorption capacity of biofilm cultured active carbon fillers in 3BER-S reactor together with the operation results of dynamic denitrification and simultaneous PAEs removing. The results showed that the average adsorption rates of DBP, DEHP were 85.84% and 97.12% in the biofilm cultured active carbon fillers, the equilibrium adsorption capacities were 0.1426 mg ·g-1 and 0.162 mg ·g-1and the time spans of reaching adsorption saturation were 120 min and 60 min, respectively; The existence of PAEs had no obvious effect on denitrification, the reactor effluent concentration of TN was in range of 1-2 mg ·L-1 before and after the addition of PAEs, and the average removal rate of TN reached above 94%; 3BER-S denitrification system showed significant ability in removing PAEs, leading to effluent concentrations of DBP and DEHP of no more than 6 μg ·L-1 with removal rates of above 96%; this was due to the synergistic effect of absorption, biodegradation and electrochemistry. After treatment with 3BER-S technology, DBP and DEHP in simulative municipal secondary effluent met the regulated limitation of The Reuse of Urban Recycling Water Quality Standard for Groundwater Recharge (GB/T 19772-2005). |
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