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操纵剂量方案以优化部分和垂直流处理湿地中的去除
Sukhjit P Singh1, Chris C Tanner2, James P S Sukias2
1Earth Sciences New Zealand, Gate 10 Silverdale Rd, Hamilton 3216, New Zealand; School of Engineering, Faculty of Science and Engineering, University of Waikato, Private Bag 3105, Hamilton 3240, New Zealand.
Chemosphere
|January 21, 2026
概括
部分和垂直流 (PSVF) 湿地在波动负载下有效处理废水. 基于石的系统显示出优越的去除,即使用更大的剂量,与其他配置不同.
科学领域:
- 环境工程 环境工程
- 废水处理技术 废水处理技术
- 现场的环境卫生系统
背景情况:
- 部分和垂直流 (PSVF) 湿地是小型社区的低成本,现场废水处理解决方案.
- 现有的研究经常使用流量均剂量,不反映现实的日常 (日常) 家用废水波动.
- 不同剂量量对PSVF性能的影响还未得到研究.
研究的目的:
- 为了评估不同PSVF湿地配置在现实的日间负载条件下的处理性能.
- 评估不同剂量量对废水处理效率的影响.
- 了解PSVF系统中介质组成和剂量策略之间的相互作用.
主要方法:
- 测试了三种PSVF湿地配置:焦石木片,石木片和完整木片.
- 系统每天接受了三种不同的剂量体积 (2.75,5.5和11毫米) 的日间负荷.
- 在所有测试中,每天保持110mm/day的恒定液压负载率.
主要成果:
- 所有PSVF系统在日间负载下都实现了高清除率 (>95%对于cBOD5,~85%对于TSS).
- 石木片系统始终消除了97-99%的氨,无论剂量大小如何.
- 在石木片和完整木片系统中,去除效率随着剂量增加而下降,其中氨有显著的突破.
- 较大的剂量增加了大肠杆菌和的突破,这是由于通过自由排水层的透速度更快.
结论:
- PSVF系统可以在日常负载下有效处理废水,与有机物和TSS的定期剂量可比.
- 基于石的PSVF配置提供了优越和一致的去除,特别是在较大的日用剂量下.
- 剂量量显著影响石木片和木片单一系统中的营养和微生物去除,突出了优化剂量策略的重要性.
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