The Characteristics of Leachate at an Open-Dumping Landfill Site in Korea
| Autor: | Kazuhiro Takamizawa, Young S. Yoo, Young C. Chang, Kweon Jung |
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| Rok vydání: | 1999 |
| Předmět: | |
| Zdroj: | Japanese Journal of Water Treatment Biology. 35:143-155 |
| ISSN: | 1881-0438 0910-6758 |
| DOI: | 10.2521/jswtb.35.143 |
| Popis: | A method for prediction of leachate amount and analysis of leachate characteristics at an open-dumping landfill site, Nanji-do, Seoul, Korea were studied to help designing of leachate treatment facility and planning for adequate utilization of produced land. Water content capable of maintaining by wastes was introduced to water balance equations for prediction of leachate amount, resulted that 4, 339 m3/day in average was computed. Despite HELP model gave more leachate amount, similar value was obtained by using Stegmann model applicable for condition of unfavorable soil covering at sanitary landfills. Cl-concentration profile in leachate suggested that behavior of leachate production at an open-dumping site was likely to those of at semiaerobic landfill sites and sea-based waste disposal sites. Air could penetrate into inner layer, if dumping height was 95 m. Rate of oraganics decomposition could be slower than that of sanitary landfill, was understandable from analysis of BOD and nitrogen concentrations in leachate. Heavy metals detected were mainly form of suspended solids and values of leachate effluent are higher than those of internal leachate. Cadmium, mercury, and lead were seldom detected in leachate. It was found that sulfate-reducing bacteria were widely distributed in leachates and more number of sulfate-reducing bacteria showed lower values of heavy metals in leachate, besides, number of sulfate-reducing bacteria were highly correlated (r=0.523, n=36) with TBOD values of leachate. |
| Databáze: | OpenAIRE |
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