Laboratory Experiments of Roofwater Treatment by Sand Column in Jinan

Abstract:

To satisfy the requirements of high speed, large volume and high water quality for fracture-karst aquifer recharge by roofwater, sand filtration column was designed. Lab experiment of roof rainwater treatment by sand column was conducted to study the effect of roof rainwater purification in Jinan as pretreatment for fracture-karst aquifer recharge. The results show that the sand filtration column is effective in removing pollutants in roof rainwater. The average removal rate of turbidity reaches 87%, and the average removal rate of suspended solids is above 70%; the sand column is also effective in removing chroma, volatile phenol, Pb and Zn to a certain degree. However, it has a poor effect in removing ammonia nitrogen and nitrite nitrogen. In addition, the removal of most pollutants such as turbidity, chroma and suspended solids mainly take palce in the upper layer, which needs to be replaced regularly.

• Periodical: Applied Mechanics and Materials (Volumes 361-363)
• Pages: 619-622
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.361-363.619
• Online since: August 2013
• Authors: Hai Yan Deng, Wei Ping Wang, Meng Bin
• Keywords: Managed Fracture-Karst Aquifer Recharge, Roof Rainwater Runoff, Sand Filtration Column

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