Investigation of the role of organic matter in partitioning of chemicals in the municipal wastewater treatment process

城市污水处理过程中有机物在化学品分配中的作用研究

• 批准号: RGPIN-2016-06245
• 负责人: McPhedran, Kerry
• 金额: $ 2.62万
• 依托单位: University of Saskatchewan
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2018
• 资助国家: 加拿大
• 起止时间: 2018-01-01 至 2019-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=659417
• 关键词: Investigation; role; organic; matter; partitioning

***The widespread uses and applications of historic and newly emerging chemicals of environmental concern (CECs) is of increasing interest to the scientific community, industry, government and the general public in response to the potential health risks of acute and chronic exposures of CECs to organisms in receiving environments. CECs are introduced into aquatic environments through various sources including wastewater streams, agricultural and storm-water runoffs. Of these, municipal wastewater treatment plant (MWTP) effluents are a continuing issue for Canadians making the improvement of municipal wastewater management a critical element for a sustainable ecological future for lakes and rivers.******Partitioning of CECs to organic matter (OM), is important in their fate and transport during the MWTP process, but has been poorly investigated in MWTPs. Partitioning to OM has historically been described via chemical hydrophobicity which has been included in MWTP models via the octanol-water partitioning coefficient. However, CECs include contaminants having widely varying physicochemical properties which may not follow partitioning based on hydrophobicity. Knowledge of CEC partitioning behaviour is essential for determination of bioavailability and degradation, and potential MWTP loadings to the environment for the assessment of new and existing chemical impacts on human and environmental health.*******The goal of the proposed research program is to conduct comprehensive fundamental and applied research on the fate and transport of CECs including polybrominated diphenyl ethers (PBDEs), pharmaceuticals and personal care products (PPCPs), and nanomaterials (NMs) in MWTP processes. The program includes three projects with objectives of: (1) Assessment of MWTP models to determine necessary physicochemical parameters and partitioning mechanisms needed to be further understood to inform model improvement and development; (2) Determine the partitioning behaviour of PBDEs to various MWPT OM size fractions to elucidate partitioning mechanisms and correlate to various physicochemical parameters; and (3) Extend knowledge gained for PBDEs to research PPCPs and NMs including validation of passive organic chemical integrative samplers. ******Knowledge gained from this research program will be a critical component in our ability to assess and delineate the potential implications of CEC remediation, manufacture and disposal, while helping to open new approaches to MWTP processes to help mitigate CEC loading to receiving environments. The potential users of the results included water and wastewater treatment utilities, environmental protection agencies, industry, and governmental decision makers. The model improvements may also be adapted for use in MWTPs, in Canada and worldwide, to help inform relevant decisions on updating of treatment processes to safeguard environmental health.*****

***，历史和新兴的环境关注化学物质（CEC）的广泛使用和应用是科学界，工业，政府和公众的兴趣越来越多，以应对接收环境中CEC对有机体的急性和慢性暴露的潜在健康风险。通过各种来源将CEC引入水生环境中，包括废水流，农业和雨水径流。其中，对于加拿大人，改善市政废水管理是湖泊和河流可持续生态未来的关键因素。******将CEC划分为有机物（OM）在MWTP过程中的效果和运输非常重要，这是对湖泊和河流可持续生态未来的关键因素。历史上通过化学疏水性描述了对OM的分区，该化学疏水性通过辛醇 - 水分配系数包括在MWTP模型中。但是，CEC包括具有广泛变化的物理化学特性的污染物，这些特性可能不会基于疏水性进行分配。 Knowledge of CEC partitioning behaviour is essential for determination of bioavailability and degradation, and potential MWTP loadings to the environment for the assessment of new and existing chemical impacts on human and environmental health.*******The goal of the proposed research program is to conduct comprehensive fundamental and applied research on the fate and transport of CECs including polybrominated diphenyl ethers (PBDEs), pharmaceuticals and personal care products （PPCP）和MWTP过程中的纳米材料（NMS）。该计划包括三个具有以下目标的项目：（1）评估MWTP模型，以确定所需的必要的理化参数以及需要进一步理解的分区机制，以告知模型改进和开发； （2）确定PBDE在各种MWPT OM大小分数中的​​分配行为，以阐明分配机制并与各种理化参数相关； （3）扩展了PBDE获得的知识，以研究PPCP和NMS，包括验证被动有机化学综合采样器。 ******从该研究计划中获得的知识将是我们评估和描述CEC修复，制造和处置的潜在影响的能力的关键组成部分，同时帮助打开MWTP流程的新方法，以帮助减轻CEC加载到接收环境。结果的潜在用户包括水和废水处理公用事业，环境保护机构，工业和政府决策者。该模型的改进也可以适用于加拿大和全球的MWTP，以帮助告知有关更新治疗过程以保护环境健康的相关决定。******************