生物废水处理:使用生命周期评估进行全面的可持续性分析
Ritesh Kumar1, Kulvendra Patel2, S K Singh1
1Department of Environmental Engineering, Delhi Technological University, Delhi, 110042, India.
Environmental monitoring and assessment
|April 3, 2024
概括
与其他方法相比,土壤生物技术 (SBT) 的废水处理对环境的影响最低. 这种生命周期评估突出了SBT的重点.
科学领域:
- 环境科学 环境科学
- 环境工程 环境工程
- 生命周期评估 生命周期评估
背景情况:
- 常规活性污泥工艺 (ASP) 是一种广泛使用的废水处理方法.
- 像膜生物反应器 (MBR),土壤生物技术 (SBT) 和生物电化学构造湿地 (BCW) 等新兴技术提供了潜在的替代方案.
- 对这些方法进行全面的环境比较对于可持续的废水管理至关重要.
研究的目的:
- 对MBR,SBT和BCW与ASP进行比较的生命周期评估 (LCA).
- 评估各种类别的环境影响,包括全球变暖潜力和人类健康.
- 确定最环境可持续的废水处理技术.
主要方法:
- 使用SimaPro v9.5软件进行的生命周期评估 (LCA).
- 应用了摇篮到门的系统边界和IMPACT 2002+方法.
- 定义为每立方米处理废水的功能单位.
主要成果:
- 在SBT中,全球变暖潜力最低 (0.0996公斤CO2eq/m3),明显低于ASP (0.544公斤CO2eq/m3).
- MBR显示了最高的环境影响,与ASP相比增加了144.48%,主要是由于高电力消耗.
- 与ASP相比,SBT还显示资源影响下降了83.41%,而MBR显示增加了138.15%.
结论:
- 在被评估的污水处理方法中,SBT是对环境最有利的污水处理方法.
- 电力消耗是MBR和ASP的主要环境负担.
- 生活污水评估结果对于向可持续的废水管理实践作出明智决策至关重要.
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