TITLE:
The Effect of Different Artificial Soil on Urban Non-Point Source Pollution Reduction in the Artificial Rapid Infiltration System
AUTHORS:
Junfeng Wu, Langrun Song, Qian Feng, Jingyang Luo, Zhaoxia Xue
KEYWORDS:
Non-Point Source Pollution, Artificial Rapid Infiltration System, Permeability Coefficient, Zeolite, Pollutants, Removal Efficiency
JOURNAL NAME:
Journal of Geoscience and Environment Protection,
Vol.6 No.11,
November
16,
2018
ABSTRACT: The non-point source pollution posed great risks to the urban water environment
which has aroused great concerns. Artificial rapid infiltration systems
have been widely used in sewage treatment, which have great environmental
and economic values. This study investigated the potential of utilizing
artificial rapid infiltration systems on the reduction of urban non-point
source pollution. The obtained results showed that the components and
composition of artificial soils were vital to the operational performance. The
mixture of natural soil, coarse sand and zeolite was ideal for the construction
of artificial soils. The permeability coefficient of soils could be improved to
0.166 cm/min at the optimized ratio of 1:1:0.05 (natural soil, coarse sand and
zeolite). Also, high removal efficiency for the typical pollutants in rain runoffs
(i.e. COD, NH4+-N, TN and TP) could be simultaneous obtained which was
above 74% in the artificial rapid infiltration systems. The results demonstrated
the effectiveness on the reduction of urban non-point pollution by optimized
artificial rapid infiltration system.