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http://dx.doi.org/10.9765/KSCOE.2018.30.5.201

A Study on Changes in Pore Water Quality of Polluted Sediment due to Mixing Ratio of Granulated Coal Ash  

Lee, In-Cheol (Ocean Engineering, Pukyong National University)
Woo, Hee-Eun (Ocean Engineering, Pukyong National University)
Kim, Kyeongmin (Ocean Engineering, Pukyong National University)
Lee, Jun-Ho (Naraho, Pukyong National University)
Kim, Kyunghoi (Ocean Engineering, Pukyong National University)
Publication Information
Journal of Korean Society of Coastal and Ocean Engineers / v.30, no.5, 2018 , pp. 201-206 More about this Journal
Abstract
This study investigated the changes in pore water quality of polluted sediment by mixing ratio of granulated coal ash. The mesocosm experiments were carried out with 0%, 10%, 30% and 50%, respectively, of the material mixture ratio relative to the sediments. According to the results of the experiments, pH increased depending on the mixing ratio. Phosphate and ammonia concentrations were significantly decreased in the mixing ratio of 30% and 50% compared to the control (p < 0.05). The concentration of hydrogen sulfide was reduced by 72% at the mixing ratio of 10%, and it was not detected at the mixing ratio of 30% and 50%. This study was confirmed that granulated coal ash can change the pore water quality of polluted sediments in proportion to the amount of material. However, the effect of the mixing ratio between 30% and 50% was not significantly different, thus it is concluded that mixing of 30% of the volume of the sediment is economically feasible.
Keywords
granulated coal ash; polluted sediment; pore water; water quality; mixing ratio;
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