| GAC-石英砂滤池处理高氨氮原水的生产研究 |
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| 引用本文： | 陈艺韵,陆少鸣. GAC-石英砂滤池处理高氨氮原水的生产研究[J]. 环境科学与技术, 2010, 33(6). DOI: 10.3969/j.issn.1003-6504.2010.06.011 |
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| 作者姓名： | 陈艺韵 陆少鸣 |
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| 基金项目： | 广州市自来水公司科研攻关计划项目 |
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| 摘 要： | 以广州市珠江流溪河下游为水源,采用GAC-石英砂滤池处理沉淀池出水,研究了该工艺对枯水期高氨氮原水的去除规律及其影响因素。结果表明:GAC-石英砂滤池滤与普通砂滤池相比氨氮的去除显著提高,滤后水氨氮平均值为2.08mg/L,去除量约为1.0mg/L,去除率为33.8%。研究显示氨氮处理效果受余氯的灭菌作用、溶解氧不足、原水水质下降、pH值不足、活性炭滤料吸附性能下降、空床接触时间短、反冲洗周期与强度的影响。建议降低前投氯而加强后投氯量,同时使用无氯水进行反冲洗;保持滤后水溶解氧在2～4mg/L且pH值7.5;延长反冲洗周期至36h;适当降低运行负荷可提高GAC-石英砂滤池对氨氮的去除效果。
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| 关 键 词： | GAC-石英砂滤池 氨氮 活性炭 反冲洗 工艺改进 |
GAC/Quartz-sand Duel Media Filter for Treating Raw Water with High NH3-N Concentration |
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| CHEN Yi-yun,LU Shao-ming. GAC/Quartz-sand Duel Media Filter for Treating Raw Water with High NH3-N Concentration[J]. Environmental Science and Technology, 2010, 33(6). DOI: 10.3969/j.issn.1003-6504.2010.06.011 |
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| Authors: | CHEN Yi-yun LU Shao-ming |
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| Abstract: | This paper describes an in situ experimental water treatment for high ammonia raw water source situated on the Pearl River, Guangzhou City, using a duel media filter of granular activated carbon ( GAC) plus quartz -sand. The comparative study shows the duel media filter is better than conventional sand filter in ammonia nitrogen removal. Factors negatively affecting the removal are pointed out, such as lack of DO, high residual chlorine, decreased pH and worsened raw water quality, and suggestion for improvement is made as well. |
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| Keywords: | GAC/quartz-sand filter ammonia nitrogen activated carbon backwash process improvement |
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