Systems Dynamics of Detention/Retention in Ponds

池塘滞留/滞留的系统动力学

• 批准号: 0003408
• 负责人: Pieter Visscher
• 金额: $ 26.46万
• 依托单位: University of Connecticut
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-02-01 至 2005-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0003408&HistoricalAwards=false
• 关键词: Systems; Dynamics; Detention; Retention; Ponds

0003408TorgersenSmall ponds are traditional for control of stormwater and chemical runoff. However, 'events' has been observed that result in significant internal loading, hyper-eutrophication and export of nutrients and contaminants from the ponds. We hypothesize that ordinary bacterial processes within the sediments/benthic-boundary-layer coupled with aperiodic shallow-pond-specific processes are responsible for this internal loading and downstream contamination. Thus, the coupled interactions of physics chemistry and biology in detention/retention ponds control the state of the pond more than any individual processes. This internal loading and coupled dynamics of ponds significantly alters the application of ponds in environmental engineering.We will test hypotheses for internal loading 'events' in ponds with continuous-recording instruments (WEB-addressable) and measure the dynamic responses of ponds to internal loading 'events' (rainfall, spring, accidents, etc.) We will observe and quantify significant bulk processes involved in the removal of nutrients and contaminants from retention ponds as well as the processes that regenerate/release nutrients and metals. With monitored pond response, coupled with direct sampling and wet chemical analyses, we will define a coupled dynamic pond model.We will develop a loading history model of ponds building upon CASC2D as a function of land use to predict when the critical lifetime of a pond has been reached and remediation is required. Development of the 1) pond-loading model and 2) pond dynamics model will contribute to the appropriate use and application of ponds as detention/retention devices in the environment. We will develop the web-addressable monitoring equipment with the possibility of creating an Instrumented Environmental Systems Laboratory for use in undergraduate teaching, honors theses and extensions to high school.. The pond loading and pond dynamics models developed from this study of two ponds can be tested with simplified studies in other ponds. Continuing projects will evaluate pond dynamics across a variety of climatic zones and land use types. The ultimate product will be a database and models that will significantly improve pond design and management.

0003408Torgersensmall池塘是传统的，用于控制雨水和化学径流。 但是，已经观察到“事件”会导致池塘中的营养物质和污染物的大量内部负荷，超级积极性和出口。 我们假设在沉积物/底栖圆形层中加上Aperiodic浅池特异性过程中的普通细菌过程负责这种内部载荷和下游污染。 因此，物理化学和生物学在拘留/保留池中的耦合相互作用比任何单个过程都更能控制池塘的状态。 池塘的这种内部负载和耦合动力学显着改变了池塘在环境工程中的应用。我们将测试具有连续录制工具（可覆盖）的池塘内部负载“事件”的假设保留池的污染物以及再生/释放养分和金属的过程。 通过受到监测的池塘反应，再加上直接采样和湿化学分析，我们将定义一个耦合的动态池塘模型。我们将开发池塘上池塘的载荷历史模型，这是土地使用的函数，以预测何时达到池塘的关键生命周期并需要修复并进行修复。 开发1）池塘加载模型和2）池塘动态模型将有助于将池塘作为拘留/保留装置在环境中的拘留/保留装置。 我们将开发可用于Web的监视设备，以创建一个仪器环境系统实验室，用于本科教学，尊重这些研究和高中的范围。.池塘负载和池塘动力学模型可以通过对两个池塘进行的研究开发，可以在其他池塘中进行简化研究。持续项目将评估各种气候区域和土地利用类型的池塘动态。 最终产品将是一个数据库和模型，可显着改善池塘设计和管理。