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氮、磷吸附/解吸法确定环保疏浚深度方法探讨——以太原汾河示范段为例

马永刚 程瑾 励彦德 葛高岭 苏召斌

马永刚, 程瑾, 励彦德, 葛高岭, 苏召斌. 氮、磷吸附/解吸法确定环保疏浚深度方法探讨——以太原汾河示范段为例[J]. 环境工程技术学报, 2020, 10(3): 392-399. doi: 10.12153/j.issn.1674-991X.20190057
引用本文: 马永刚, 程瑾, 励彦德, 葛高岭, 苏召斌. 氮、磷吸附/解吸法确定环保疏浚深度方法探讨——以太原汾河示范段为例[J]. 环境工程技术学报, 2020, 10(3): 392-399. doi: 10.12153/j.issn.1674-991X.20190057
MA Yonggang, CHENG Jin, LI Y, e, GE Gaoling. Discussion on the way of determining environmental dredging depth based on nitrogen and phosphorus adsorption/desorption method: taking the demonstration section of Fenhe River in Taiyuan as an example[J]. Journal of Environmental Engineering Technology, 2020, 10(3): 392-399. doi: 10.12153/j.issn.1674-991X.20190057
Citation: MA Yonggang, CHENG Jin, LI Y, e, GE Gaoling. Discussion on the way of determining environmental dredging depth based on nitrogen and phosphorus adsorption/desorption method: taking the demonstration section of Fenhe River in Taiyuan as an example[J]. Journal of Environmental Engineering Technology, 2020, 10(3): 392-399. doi: 10.12153/j.issn.1674-991X.20190057

氮、磷吸附/解吸法确定环保疏浚深度方法探讨——以太原汾河示范段为例

doi: 10.12153/j.issn.1674-991X.20190057
详细信息
    作者简介:

    马永刚(1981—),男,高级工程师,主要从事岩土工程监测、试验检测工作,79436848@qq.com

    通讯作者:

    程瑾 E-mail: chengjin315@sina.com

  • 中图分类号: X524

Discussion on the way of determining environmental dredging depth based on nitrogen and phosphorus adsorption/desorption method: taking the demonstration section of Fenhe River in Taiyuan as an example

More Information
    Corresponding author: CHENG Jin E-mail: chengjin315@sina.com
  • 摘要: 有效疏浚深度是决定疏浚工程造价和治理效果的关键指标,目前我国现行标准规范尚未明确底泥营养盐浓度的标准,对营养盐超标河湖污染底泥的评价和有效疏浚深度确定十分不利。以太原汾河示范段为例,取其代表性柱状样0.3~0.4、0.9~1.0、1.4~1.6、1.9~2.0 m深度的底泥,分别设计Ⅰ类~劣Ⅴ类氨氮( N H 4 + -N)、正磷酸盐( P O 4 3 - )的模拟水和柱状样实际上覆水,进行氮、磷吸附/解吸试验,并分析不同深度底泥氮、磷吸附/解吸特征。结果表明:柱状样1.6 m深度以内底泥中 NH 4 + -N对水体呈释放状态,1.9 m深度底泥对水体中 NH 4 + -N具一定吸附性;1.6 m深度以内底泥中 PO 4 3 - 对水体有释放风险,1.9 m深度底泥对水体中 PO 4 3 - 具一定吸附性;1.3 m深度底泥中总氮(TN)、 NH 4 + -N浓度出现较明显的拐点,1.6 m深度底泥中总磷(TP)浓度出现较明显的拐点。结合底泥对上覆水体影响及底泥中氮、磷浓度垂向变化等因素,确定太原汾河示范段有效疏浚深度为1.6 m。

     

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  • 收稿日期:  2019-04-16
  • 刊出日期:  2020-05-20

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