Analysis and Improvement of Mixed Particle Swarm Percolation Process in Biofiltration System

WANG Yajun

doi:10.13961/j.cnki.stbctb.2017.03.056

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Analysis and Improvement of Mixed Particle Swarm Percolation Process in Biofiltration System

- Analysis and Improvement of Mixed Particle Swarm Percolation Process in Biofiltration System
- Bulletin of Soiland Water Conservation Vol. 37, Issue 3, Pages: 329-333(2017)
- 作者机构：
  
  1. 兰州理工大学土木工程学院,甘肃,兰州,730050
  2. 东南大学土木工程学院,江苏,南京,210096
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2017.03.056
  CLC：
- Published：2017
- 稿件说明：
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WANG Yajun. Analysis and Improvement of Mixed Particle Swarm Percolation Process in Biofiltration System[J]. Bulletin of Soiland Water Conservation, 2017, 37(3): 329-333.
DOI：

WANG Yajun. Analysis and Improvement of Mixed Particle Swarm Percolation Process in Biofiltration System[J]. Bulletin of Soiland Water Conservation, 2017, 37(3): 329-333. DOI： 10.13961/j.cnki.stbctb.2017.03.056.

摘要

[目的] 准确掌握过滤渗流场的变化规律，为更深刻理解生物过滤系统中流态的变化提供理论参考。[方法] 利用颗粒群加压膨胀理论，基于对流固耦合效应和渗流特性进行研究。[结果] 提出了生物过滤系统渗流过程的4阶段假设，并通过试验验证了变化规律。[结论] 无论在清水和污水渗流过程中都出现的渗透系数由下降到上升再下降变化趋势，是由于颗粒群加压膨胀产生的原因。

Abstract

[Objective] To accurately master the variation law of the filtration flow field

and to provide a theoretical reference for the deeper understanding of the change in the flow in the biofiltration system.[Methods] Based on the particle swarm pressure expansion theory

characteristics of the infiltration were studied mainly in consideration of the fluid-solid coupling effect.[Results] A four stage hypothesis in the percolation process of the biofiltration system was put forward and verified by the experiment.[Conclusion] Either for the process of water seepage or sewage seepage

the permeability coefficients changed from falling to rising and then decreasing

which is caused by the particle swarm pressure expansion.

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references

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