| 制革废水二级A／O法脱氮处理工程改造实例 |
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| 引用本文： | 陈群伟,胡小锐,张正红.制革废水二级A／O法脱氮处理工程改造实例[J].江苏环境科技,2009,22(1):46-48. |
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| 作者姓名： | 陈群伟 胡小锐 张正红 |
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| 作者单位： | 1. 嘉兴市环境保护局,浙江,嘉兴,314001
2. 嘉兴职业技术学院生物与环境工程系,浙江,嘉兴,314036 |
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| 摘 要： | 某制革企业综合废水氨氮质量浓度为200～300mg/L，以一级A／O法为主体的废水处理工艺很难实现氨氮的稳定达标排放。利用该处理系统原有构筑物将其改造成以二级A／O法为主体的处理工艺，并采用适时投加MgCl2进行后续化学法强化脱氮作为补充。经1个月的调试运行表明，出水氨氮浓度已达到GB8978—1996《污水综合排放标准》一级标准，其余指标均远低于上述排放标准。
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| 关 键 词： | 制革废水 氨氮 二级A/O法 MgCl2 |
An Engineering Renovation Case of Grade Two A/O Treatment System for Tannery Wastewater Nitrogen Removal |
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| CHEN Qun-wei,HU Xiao-rui,ZHANG Zheng-hong.An Engineering Renovation Case of Grade Two A/O Treatment System for Tannery Wastewater Nitrogen Removal[J].Jiangsu Environmental Science and Technology,2009,22(1):46-48. |
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| Authors: | CHEN Qun-wei HU Xiao-rui ZHANG Zheng-hong |
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| Institution: | CHEN Qun-wei, HU Xiao-rui, ZHANG Zheng-hong |
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| Abstract: | The NH3-N concentration of a tannery wastewater is 200 - 300 mg/L and the effluent is difficult to meet the discharge requirements by Grade one A/O process. Technical renovation is made by means of upgrading the old equipment into Grade Two A/O treatment system. Meanwhile it is reinforced with chemical nitrogen removal technique by timely adding MgCl2. After one month＇s experiment, the NH3-N concentration meets Integrated Wastewater Discharge Standards of first grade （GB 8978-1996）, and the other indices are far lower than the relevant criteria for wastewater discharge. |
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| Keywords: | MgCl2 |
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