评估基于微藻的废水处理的可持续性:环境考虑和对人类健康的影响
Ankita Bhatt1, Nitin Sahu1, Ayokunle Christopher Dada2
1Department of Hydro and Renewable Energy, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, India.
Journal of environmental management
|February 25, 2024
概括
微藻媒介废水消毒 (M-WWD) 为传统方法提供了一个可持续的替代方案. 这种方法与生物原料生产相结合,显示了污水处理对人类健康的影响和环境效益的可比性.
科学领域:
- 环境科学 环境科学
- 环境工程 环境工程
- 公共卫生 公共卫生
背景情况:
- 传统的污水处理厂 (STP) 通常依赖于能源密集的消毒方法,如紫外线 (UV) 处理.
- 微藻介导的废水消毒 (M-WWD) 是使用开放式赛道池的潜在环保替代方案.
- 评估M-WWD对环境和健康的影响对于其广泛采用至关重要.
研究的目的:
- 对M-WWD进行综合生命周期评估 (LCA) 和定量微生物风险评估 (QMRA).
- 将M-WWD与印度的传统STP进行比较,同时考虑环境和公共卫生方面的因素.
- 为了评估不同的微藻生物质利用途径 (生物柴油,生物原料,生物气) 的M-WWD.
主要方法:
- 对M-WWD和传统STP进行了综合LCA和QMRA.
- 用每人每年的残疾调整寿命年 (DALYs) 来评估人类健康影响.
- 来自大肠杆菌O157:H7和腺病毒的微生物风险被量化.
- 使用比较的LCA来评估用于生物柴油,生物原料和生物气生产的微藻生物质.
主要成果:
- 无论是M-WWD还是STP,都显示出对人体健康的生命周期影响相似 (大约. 每人每年0.01个DALY).
- 与STP相比,QMRA显示M-WWD的影响略低 (0.053个每人每年的DALY) STP.
- 微藻生物原料的生产产生了每立方米处理水的最低环境影响 (每人每年0.015 DALY).
- 微藻种植的电力消耗被确定为一个重要的环境热点.
结论:
- M-WWD,特别是当其后是微藻生物原料生产时,是污水处理的可持续替代方案.
- 该研究为开发和评估试点规模的M-WWD系统提供了基础.
- 综合LCA,QMRA和资源回收评估为废水管理决策提供了重要的见解.
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