| Abstract |
| The aim of this study is to evaluate the applicability of non-woven fabric mats (NWFMs) for interrupting organic matters and nutrients from contaminated reservoir sediments and investigate the pore size of NWFMs on its blocking efficiency. In laboratory incubation experiments, environmental conditions (pH, electric conductivity, dissolved oxygen (DO), and oxidation reduction potential) and contaminant concentrations (T-N, NH4-N, NO2-N, NO3-N, T-P, and PO4-P) were monitored. DO in uncapped condition was exhausted within four days but the DO in NWFM capping was prolonged for more than 22 days. Lower concentration of COD was observed in the NWFMs capping than uncapped, indicating that the NWFMs were effective for interrupting organic matter release. T-N was mainly composed of NH4-N and NH4-N release was effectively blocked by NWFMs capping. NWFMs capping was effective for interrupting not soluble phosphorus but adsorbed phosphorus release. NWFMs with smaller pore size was effective for blocking the release of T-P and COD than NWFMs with larger pore size, but the influence of pore size on T-N was not significant. It can be concluded that NWFM can be successfully used for remediation of reservoir`s sediments with high amounts of organic matters and nutrients. |
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| Key Words |
| Non-Woven Fabric Mat, Sediment, Organic Matter, Nitrogen, Phosphorus, Capping |
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