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http://dx.doi.org/10.21729/ksds.2019.12.1.23

The Study on the Non-Point Pollutants Reduction Using Friendly Bank Protection Anaerobic/Aerobic Contact Filtration Zone  

Chang, HyungJoon (School of Civil Engineering, Chungbuk National University)
Kim, SungDuk (School of Civil Engineering, Chungbuk National University)
Publication Information
Journal of Korean Society of Disaster and Security / v.12, no.1, 2019 , pp. 23-34 More about this Journal
Abstract
It is an urgent issue to manage and reduce non-point pollution sources for improving the water quality of stream and lakes in rural areas. In this study, in order to reduce non-point pollution sources in rural area, Gabion mattresses was proposed to provide protection of riverbanks with anaerobic and aerobic area. The utilization of this was assessed by lab scale model test and pilot plant test. After filling the inside of the gabion mattresses with aggregate, the filtration zone under anaerobic and aerobic conditions was formed to treat the contaminants. In addition, vegetation was deposited on the surfae of the gabion to prevent the inflow of soil and to promote purification by the plant. COD and nitrogen content (T-N, $NH_4{^+}$, -N, $NO_3{^-}N$) were monitored in model and field tests. The lab scale model test showed removal efficiency of 17% of TCOD, 35% of SCOD, 14% of TN, 62% of $NH_4{^+}$, -N, and 33% of $NO_3{^-}$ N. Also, pilot plant test showed removal efficiency of 24% of TCOD, 29% of SCOD, 47% of TN, 50% of $NH_4{^+}-N$, 33% of $NO_3{^-}$, N and 29% of TP.
Keywords
Non-point pullution source; Gabion mattress; Filtration zone; Anaerobic and Aerobic; Bank Protection;
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