Safe reuse water: Assessment of the removal of chemical contaminants from reuse water using a fish biomonitoring system

安全回用水：使用鱼类生物监测系统评估回用水中化学污染物的去除情况

• 批准号: 395953-2009
• 负责人: Belosevic, Miodrag
• 金额: $ 6.64万
• 依托单位: University of Alberta
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2011
• 资助国家: 加拿大
• 起止时间: 2011-01-01 至 2012-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=487331
• 关键词: Safe; reuse; water; Assessment; removal

There are clear scientific data based indications that we are entering a global warming period. Historically, even small increases in average ambient temperatures have been associated with significant loss of fresh water. Potable use of reclaimed water may be necessary in communities where water is a scarce resource (e.g. Southern Alberta, California etc.). Thus, there is an urgent need to determine the potential hazards and associated public health risk due to consumption and/or exposure to reuse water and the development of appropriate remediation measures for contaminants present in wastewater and reuse water. Within the aquatic environment, the contaminants, such as hormones, have been shown to cause physiological alterations in reproductive behavior of fish and down-regulation of physiological functions. There are also reports of female characteristics in male fish taken from waters near sewage treatment plants. Equally troubling is reported rise in the incidence of certain cancers (breast, prostate, testicular) and it has been speculated that higher prevalence of specific neoplasias may be due to estrogenic compounds in the environment. The objective of the proposed research is to use newly developed state-of-the art fish model system to evaluate the public health risk of chemical contaminants in reuse water before and after specific remediation protocols. The specific aims of the proposed research are: (1). Temporal analysis of major chemical contaminants present in the reuse water; (2). Use of newly developed fish assays for the assessment of physiological status of fish following acute and subchronic exposure to non-treated and treated reuse water; and (3) Assessment of the safety of reuse water following inactivation/removal of chemical pollutants using high dose ultraviolet radiation and hydrogen peroxide (UV/H2O2) and/or nanomaterial matrix, and development of dose response models for inactivation/removal of chemical pollutants. The proposed fish biomonitoring assays and remediation methods will be useful for the assessment of potential public health risk of reuse water by the water industry.

有明确的科学数据表明我们正在进入全球变暖时期。从历史上看，即使平均环境温度的小幅上升也会导致淡水的大量流失。在水资源稀缺的社区（例如阿尔伯塔省南部、加利福尼亚州等），可能需要使用再生水进行饮用。因此，迫切需要确定由于消费和/或接触回用水而产生的潜在危害和相关的公共卫生风险，并针对废水和回用水中存在的污染物制定适当的补救措施。在水生环境中，激素等污染物已被证明会导致鱼类繁殖行为的生理改变和生理功能的下调。还有报道称，从污水处理厂附近水域捕获的雄性鱼具有雌性特征。同样令人不安的是，据报道某些癌症（乳腺癌、前列腺癌、睾丸癌）的发病率有所上升，并且推测特定肿瘤的患病率较高可能是由于环境中的雌激素化合物所致。拟议研究的目的是使用新开发的最先进的鱼类模型系统来评估特定修复方案前后回用水中化学污染物的公共健康风险。拟议研究的具体目标是：（1）。对回用水中存在的主要化学污染物进行时间分析； （2）。使用新开发的鱼类测定法来评估鱼类在急性和亚慢性接触未经处理和处理过的回用水后的生理状态； (3) 使用高剂量紫外线辐射和过氧化氢(UV/H2O2)和/或纳米材料基质对化学污染物灭活/去除后回用水的安全性进行评估，并开发化学污染物灭活/去除的剂量响应模型。拟议的鱼类生物监测测定和修复方法将有助于评估水工业回用水的潜在公共卫生风险。