Ecological risk characterisation and modelling for the use of water treatment residuals as soil conditioners

使用水处理残留物作为土壤改良剂的生态风险表征和建模

• 批准号: 1983752
• 金额: --
• 依托单位: Keele University
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2017
• 资助国家: 英国
• 起止时间: 2017 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-1983752
• 关键词: Ecological; risk; characterisation; modelling; use

Water treatment residuals (WTRs) are generated in vast quantities all over the world as a by-product of drinking water clarification using aluminium and/or iron salts. In the interests of minimising waste, increasing recycling and developing a more circular economy, plus saving large sums of money spent on the current disposal route of landfill, there is a move to utilise these WTRs in environmental applications. They have been identified as having potential uses as soil amendments, but there are uncertainties that must be addressed before this application option can be widely adopted. This project will address the uncertainties surrounding the effects or impacts on earthworm abundance, diversity and survival from WTR application to land. It will also examine the influence on soil porewater chemistry (i.e. assessing leaching of elements from WTRs) and on soil microbial function (i.e. soil respiration rate) of WTR application. Together with project CASE partner 4R, the project will use a combination of full scale field trials, semi-field scale mesocosms and laboratory experiments to address these uncertainties.

水处理残留物（WTRs）作为使用铝盐和/或铁盐的饮用水净化的副产物在世界各地大量产生。为了最大限度地减少废物，增加回收利用和发展更循环的经济，以及节省在目前的垃圾填埋处置路线上花费的大量资金，有一种将这些WTRU用于环境应用的趋势。它们已被确定为具有土壤改良剂的潜在用途，但在广泛采用这一应用选择之前，必须解决一些不确定性。该项目将解决WTR应用于土地对生物丰度、多样性和生存的影响或影响的不确定性。它还将研究WTR应用对土壤孔隙水化学的影响（即评估WTR中元素的浸出）和对土壤微生物功能（即土壤呼吸速率）的影响。与项目合作伙伴4 R一起，该项目将使用全规模现场试验，半现场规模的中型生态系统和实验室实验的组合来解决这些不确定性。