| 摘要: |
| 采用水解酸化-两段生物接触氧化工艺处理锦纶6废水，考察了进水有机负荷对化学需氧量和总氮去除效果的 影响,并对系统内的脱氮特性进行了分析。结果表明，当进水有机负荷在1.37~3. 95 kg. bT .d—1时，化学需氧量 去除率较为稳定，总氮去除率呈现先升后降的趋势。水解酸化池内硝化作用、反硝化作用、氨化作用、水解作用和酸 化作用同时存在，对氮元素的转化产生重要影响,生物接触氧化池的脱氮主要是通过好氧反硝化反应进行。 |
| 关键词: 锦纶废水 水解酸化 生物接触氧化 生物脱氮 |
| DOI： |
| 分类号: |
| 基金项目:上海市科委项目(042312045)和上海市博士后基金资助项目 |
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| Characteristics of nitrogen removal from nylon-6 wastewater in hydrolysis acidification-submerged biofilm process |
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LIU Fang1,ZHAO Chao-cheng1,ZHANG Xiu-xia1,LIU Guo-hua2
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(1. College of Chemistry and Chemical Engineering in China University of Petroleum,Dongying 2570611Shandong Province, China;2. Environmental Science and Engineering College in Donghua University, Shanghai 200051，China)
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| Abstract: |
| A hydrolysis acidification-submerged biofilm system was selected for nylon-6 wastewater treatment. The effects of influent organic loadings on chemical oxygen demand ( COD) and total nitrogen (TN) removal was investigated, and the characteristics of nitrogen removal were also analyzed. As influent organic loadings varied from 1.37 kg ? m'3 d"1 to 3.95 kg m_3 d_1, COD removal efficiency became relatively steady t while TN removal efficiency first increased and then decreased. The transformation of nitrogen is affected by nitrification, denitrification, ammonificatin, hydrolysis and acidification in the hydrolysis acidification reactor, and aerobic denitrification reaction is contributed to nitrogen removal in submerged biofilm reactors. |
| Key words: nylon wastewater hydrolysis acidification submerged biofilm biological nitrogen removal |
