Interception and Control Effects of Ecological Buffer Zone on Fluoride Non-point Source Pollution Under Different Conditions

XU Ying; TAN Ting; REN Jingsong; LI Yu; XIANG Biao; ZHU Yongle; TANG Jiaxi

doi:10.13870/j.cnki.stbcxb.2022.02.046

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Interception and Control Effects of Ecological Buffer Zone on Fluoride Non-point Source Pollution Under Different Conditions

更新时间：2024-11-07

- Interception and Control Effects of Ecological Buffer Zone on Fluoride Non-point Source Pollution Under Different Conditions
- Vol. 36, Issue 2, Pages: 361-367(2022)
- 作者机构：
  
  辽宁工程技术大学环境科学与工程学院,辽宁,阜新,123000
- 作者简介：
- 基金信息：
- DOI：10.13870/j.cnki.stbcxb.2022.02.046
  CLC： X173
- Published：2022
- 稿件说明：
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XU Ying, TAN Ting, REN Jingsong, et al. Interception and Control Effects of Ecological Buffer Zone on Fluoride Non-point Source Pollution Under Different Conditions[J]. 2022, 36(2): 361-367.
DOI：

XU Ying, TAN Ting, REN Jingsong, et al. Interception and Control Effects of Ecological Buffer Zone on Fluoride Non-point Source Pollution Under Different Conditions[J]. 2022, 36(2): 361-367. DOI： 10.13870/j.cnki.stbcxb.2022.02.046.

摘要

生态缓冲带可有效截留阻控非点源污染物向水体中迁移。选取紫花苜蓿(Medicago sativa L.)、高羊茅(Festuca elata Keng ex E. Alexeev)、草木樨(Melilotus officinalis (Linn.))、早熟禾(Poa annua L.)和黑麦草(Lolium perenne L.)5种草本植物构建模拟生态缓冲带

通过人工模拟径流试验

探讨不同植被类型、污染物入流浓度、生态缓冲带坡度以及施加生物炭种类条件下

生态缓冲带对径流中氟离子阻控效果的影响。结果表明:早熟禾生态缓冲带对径流中氟化物的阻控效果最好

当流量为0.5 L/min

入流浓度为4 mg/L

坡度为5°时

其对氟化物浓度的阻控效率为13.1%

质量阻控效率为92.6%;当流量为0.5 L/min

入流浓度为8 mg/L

坡度为5°时

其浓度阻控效率为20.6%

质量阻控效率为96.4%;坡度越小

生态缓冲带对氟化物阻控效果越好;当流量为0.5 L/min

入流浓度为4 mg/L

坡度为5°时

添加玉米秸秆生物炭后的生态缓冲带径流阻控效率均有提高

其中草木樨缓冲带最为明显

其地表径流的阻控效率提高23.8%。

Abstract

The ecological buffer zone can effectively intercept and control the migration of non-point source pollutants into the water body. Alfalfa

tall fescue

sweet clover

Kentucky bluegrass and ryegrass were selected to construct a simulated ecological buffer zone. Through an artificial runoff simulation experiment

the effects of ecological buffer zone on the inhibition and control effect of fluoride ion in runoff under the different conditions

including different vegetation types

pollutant inflow concentrations

ecological buffer zone slopes and biochar types were discussed. The results showed that the ecological buffer zone of Kentucky bluegrass had the best effect on the inhibition and control of fluoride in runoff. When the flow was 0.5 L/min

the inflow concentration was 4 mg/L and the slope was 5°

the inhibition and control efficiency of fluoride concentration was 13.1% and the quality inhibition and control efficiency was 92.6%. When the flow rate was 0.5 L/min

the inflow concentration was 8 mg/L and the slope was 5°

the concentration resistance control efficiency was 20.6% and the mass resistance control efficiency was 96.4%. This means the smaller the slope

the better effect of ecological buffer zone on fluoride inhibition and control. When the flow was 0.5 L/min

the inflow concentration was 4 mg/L and the slope was 5°

the runoff inhibition and control efficiency of the ecological buffer zone was improved by adding corn straw biochar

especially the sweet clover buffer zone

whose surface runoff inhibition and control efficiency was increased by 23.8%.

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