Development of phosphorus loading control strategies for urbanizing watersheds

城市化流域磷负荷控制策略的制定

• 批准号: RGPIN-2016-04951
• 负责人: Jamieson, Rob
• 金额: $ 3.06万
• 依托单位: Dalhousie University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2020
• 资助国家: 加拿大
• 起止时间: 2020-01-01 至 2021-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=709537
• 关键词: Development; phosphorus; loading; control; strategies

Phosphorus loading and accelerated eutrophication have negative effects on human and environmental health, and significant potential economic impacts. Increases in the frequency of algal blooms has been reported in several regions of Canada, with phosphorus loading from non-point urban and rural sources as suspected primary causes. Changes in trophic state within a water system influences the ability to use the water resource for recreational purposes, increases water treatment costs, and degrades aquatic biodiversity. Restrictions are currently being placed on new development in several regions of Canada based solely on phosphorus loading concerns. Within urbanizing watersheds, stormwater can be a major source of phosphorus to receiving water bodies. Treatment wetlands have been identified as a possible tool for mitigating phosphorus loading from urban stormwater due to their low maintenance requirements, resiliency, and aesthetic appeal. However, there are significant knowledge gaps with respect to the fate of phosphorus within stormwater wetlands, especially in cool climates. The short term goals of this research program are to identify mechanisms of phosphorus retention with stormwater treatment wetlands, and develop innovate design and operation approaches that can be used to optimize phosphorus removal in cool climate wetland systems. The research program will involve controlled laboratory experiments, field studies involving full scale stormwater wetland systems, and the development of a new, cool climate, process-based wetland model. The research activities will focus on a wetland system receiving stormwater from a new urban development in Halifax, that will serve as a "Living Laboratory". A diversity of students will be trained at the doctoral, masters and undergraduate levels, and will gain experience using state-of-the-art environmental monitoring instruments. This research will lead to the development of tools and design recommendations that can be directly used by stormwater engineers and municipal planners to ensure protection of valuable aquatic resources.

磷的负载和加速富营养化对人类和环境健康产生负面影响，并产生重大的潜在经济影响。 在加拿大的几个地区，已经报道了藻华的频率的增加，由于可疑的主要原因，非点城市和农村来源的磷负载。水系统内营养状态的变化会影响使用水资源用于娱乐目的，增加水处理成本并降低水生生物多样性的能力。目前，仅基于磷的加载问题，加拿大多个地区的新发展受到限制。在城市化流域中，雨水可以成为接收水体的主要磷。由于其维护要求低，弹性和美学吸引力，治疗湿地已被确定为减轻城市雨水的磷加载的可能工具。但是，关于雨水湿地中磷的命运，尤其是在凉爽的气候下，知识差距很大。该研究计划的短期目标是通过雨水处理湿地鉴定磷的保留机制，并开发可用于优化凉爽气候湿地系统中的磷的创新设计和操作方法。该研究计划将涉及受控的实验室实验，涉及全面雨水湿地系统的现场研究以及开发新的，凉爽的气候，基于过程的湿地模型。 研究活动将集中于哈利法克斯（Halifax）新的城市开发项目中接收雨水的湿地系统，该系统将作为“活实验室”。 各种各样的学生将在博士学位，硕士和本科级别进行培训，并将使用最先进的环境监测工具获得经验。这项研究将导致开发工具和设计建议，这些建议可以直接由雨水工程师和市政计划人员直接使用，以确保保护宝贵的水生资源。