Identification and Remediation of Precipitation-related Clogging in Wastewater Effluent Filter-beds

废水滤床中与沉淀相关的堵塞的识别和修复

• 批准号: 520764-2017
• 负责人: Cicek, Nazim
• 金额: $ 1.82万
• 依托单位: University of Manitoba
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=640581
• 关键词: Identification; Remediation; Precipitation; related; Clogging

In this research project, we will survey clogging problems currently experienced in wastewater sub-surfacefiltration systems at a variety of project sites managed by Dillon Consulting. Dillon Consulting Ltd. approachedus to understand the causes and provide potential remedies to such clogging issues. Precipitants will becollected and analyzed for iron, calcium, sulfur, carbonate, magnesium, phosphorus, nitrogen, organic carbon,protein, potassium, and sodium to determine the composition of the clogging agents. Analysis of physical andchemical conditions occurring upstream of the precipitation problems will be conducted to determine combinedeffects of ion concentration, water flow rate, temperature and pH on precipitation. Process design alterationsand flow configurations to mitigate precipitate formation and accumulation will be determined. Of particularinterest is precipitation occurrence in conditions of low ion concentration and what changes can be made toavoid these problems. Test columns of filter media of different porosity and character (e.g. sand and inertrecycled glass as control) will be evaluated to determine optimum percolation rates to avoid clogging. Throughanother research project, a site is available to us in the Village of Dunnottar, MB for pilot scale testing ofprecipitate forming conditions as well as remediation options. Dillon Consulting will benefit from this study, asthey will better understand operational challenges associated with inorganic precipitation and consider designchanges to existing and future sites.

在这个研究项目中，我们将调查堵塞问题，目前经历的废水sub-surfacefilitation系统在各种项目现场管理的狄龙咨询。狄龙咨询有限公司接近我们，以了解原因，并提供潜在的补救措施，这样的堵塞问题。收集并分析堵塞剂中的铁、钙、硫、碳酸盐、镁、磷、氮、有机碳、蛋白质、钾和钠，以确定堵塞剂的成分。将对沉淀问题上游发生的物理和化学条件进行分析，以确定离子浓度、水流速、温度和pH值对沉淀的综合影响。将确定减少沉淀物形成和积累的工艺设计变更和流程配置。特别令人感兴趣的是在低离子浓度的条件下发生沉淀，以及可以做出哪些改变来避免这些问题。将对不同孔隙率和特性的过滤介质（例如，沙子和惰性回收玻璃作为对照）的测试柱进行评估，以确定最佳渗滤速率，以避免堵塞。在另一个研究项目中，我们在MB的邓诺塔尔村找到了一个场地，用于对沉淀物形成条件和补救方案进行中试规模的测试。Dillon Consulting将从这项研究中受益，因为他们将更好地了解与无机沉淀相关的运营挑战，并考虑对现有和未来站点的设计变更。