使用农业生物质与资源回收相结合的污泥调节和脱水的实验研究
1Department of Civil Engineering, National Institute of Technology, Karnataka, Surathkal, Mangalore, 575025, Karnataka, India.
Journal of environmental management
|January 24, 2024
概括
修改的Areca生物炭有效地调节和排水乳制品污泥,降低水分并提高沉降能力. 用MgO浸的生物炭实现了高酸盐回收,为乳制品污泥管理提供了可持续的解决方案.
科学领域:
- 环境工程 环境工程
- 材料科学 材料科学 材料科学
背景情况:
- 乳制品污泥由于其高含水量和潜在的污染物负载,因此存在重大处置挑战.
- 有效的污泥调节和排水对于减少处理量和促进资源回收至关重要.
研究的目的:
- 为了研究修改的皮纤维生物炭 (MAFB-AlCl3) 和子生物炭 (MCSB-FeCl3) 对于乳制品污泥调节和脱水的有效性.
- 评估MgO浸生物炭 (MgAFB,MgCSB) 在乳制品污泥中酸盐回收的性能.
主要方法:
- 对泥脱水参数 (CST,水分含量,泽塔潜力,沉积性) 的MAFB-AlCl3的实验评估.
- 使用响应表面方法优化污泥调节参数 (剂量,RMT,SMT).
- 使用MGO浸生物炭进行酸盐回收的批量研究.
- 使用FE-SEM和EDS进行表征,以分析结构变化.
主要成果:
- MAFB-AlCl3显著降低了CST (51.6%),水分含量 (18%) 和泽塔电位 (1.3 mV),同时增加了沉降性 (32.7%).
- 经过优化调节,在50%的DS剂量,9.89分钟的RMT和17.23分钟的SMT时,CST达到31.51秒.
- 酸盐回收率达到了MgAFB的96.6%,MgCSB的100%.
结论:
- 修改的阿雷卡生物炭 (MAFB-AlCl3) 是有效的乳制品污泥调节和脱水.
- 用MgO浸的生物炭 (MgAFB,MgCSB) 在酸盐回收方面表现出色.
- 这些生物炭为乳制品污泥管理提供了一个有希望的综合方法.
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