...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>The Science of the Total Environment >Effects of ferric sulfate and polyaluminum chloride coagulation enhanced treatment wetlands on Typha growth, soil and water chemistry
【24h】

Effects of ferric sulfate and polyaluminum chloride coagulation enhanced treatment wetlands on Typha growth, soil and water chemistry

机译：铁硫酸盐和聚铝氯化物凝固增强治疗湿地对Typha生长，土壤和水化学的影响

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Land surface subsidence is a concern in many deltas worldwide as it contributes to water quality degradation, loss of fertile land and increased potential for levee failure. As a possible solution to these concerns, on-site coagulation enhanced treatment wetlands (CETWs), coagulation water treatment followed by wetland passage serving as a settling basin, were implemented in a field-scale study located on a subsided island of the Sacramento-San Joaquin Delta in northern California under three treatments; coagulation with polyaluminum chloride (PAC), coagulation with ferric sulfate and an untreated control. Because CETWs offer a relatively novel solution for water quality improvement and subsidence reversal due to its low-infrastructure requirements and in-situ nature, effects from these systems remain uncharted and they may have adverse effects on plant biomass production that also contribute to sediment accretion. This study focuses on the effect CETWs had on the growth of Typha spp.; the dominant vegetation in the wetlands. Plant growth parameters and nutrient content were measured in conjunction with soil, pore water and surface water chemistry. Soil analysis indicated there was no intermixing of newly formed flocs and original soil material. Where there was significant deposition of floc, PAC treatment reduced phosphate concentrations and ferric sulfate treatment increased total Fe concentrations in surrounding water compared to the control. Results indicated coagulation treatments had no negative effects on Typha leaf nutrient content, Typha growth or allometric parameters. Additionally, no signs of plant toxicity such as necrosis, wilting or chlorosis were observed in any of the treatments. Overall, this study suggests that CETWs are viable treatment option for water quality improvement and sediment accretion while having no negative impact on the growth of Typha plants. (C) 2018 Published by Elsevier B.V.
机译：土地表面沉降是在全球许多德尔塔斯的关注，因为它有助于水质退化，肥沃的土地丧失和堤坝失败的潜力增加。作为这些担忧的可能解决方案，现场凝固增强的处理湿地（CETW），凝固水处理，然后是作为沉降盆地的湿地通过，在位于萨克拉门托 - 圣岛的一个现场规模研究中实施Joaquin Delta在北加州在三个治疗中;用聚氯化聚铝（PAC），用硫酸铁和未处理的对照凝固。由于CETWS为水质改善和沉降逆转解决方案，因此由于其低基础设施要求和原位性质而言，这些系统的效果保持不公平，并且它们可能对植物生物质产生产生不利影响，这也有助于沉积物沉积物。本研究重点介绍CETWS对TYPHA SPP的生长的影响;湿地的主要植被。植物生长参数和营养含量与土壤，孔隙水和表面水化学结合使用。土壤分析表明，新形成的絮状物和原始土壤材料没有混合。在絮凝物沉积显着沉积的情况下，与对照相比，PAC处理降低了磷酸盐浓度，并且铁硫酸铁处理增加了周围水中的总Fe浓度。结果表明凝血治疗对Typha叶营养含量，汤汤氏生长或各种参数没有负面影响。此外，在任何治疗中没有观察到植物毒性等植物毒性的迹象，例如坏死，枯萎或萎缩。总体而言，本研究表明，CETWS是水质改善和沉积物吸收的可行处理选择，同时对Typha植物的生长没有负面影响。 （c）2018由elestvier b.v出版。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号