Impact of Leachate Recirculation on Stabilization of Solid Wastes Leachate in Simulated Anaerobic Bioreactors
| Autor: | W. Oktiawan, I. B. Priyambada |
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| Rok vydání: | 2020 |
| Předmět: | |
| Zdroj: | IOP Conference Series: Earth and Environmental Science. 448:012127 |
| ISSN: | 1755-1315 1755-1307 |
| DOI: | 10.1088/1755-1315/448/1/012127 |
| Popis: | The purpose of this study was to analyze the effect of leachate recirculation on decreasing organic pollutant content in leachate which was investigated in a laboratory-scale experiment using simulated landfill anaerobic biorecators (lysimeters). Leachate used in this study was artificial leachate which was made in high concentrations (BOD 3, 758.19 mg/l and COD 7, 406.67 mg/l) and low concentrations (BOD 641.30 mg/l and COD 1, 279.33 mg/l). Leachate recirculation was carried out on biodegradable waste in reactors with two operating conditions. The first group of reactors was operated with high concentration leachate and the second group was operated with low concentrations leachate. Each operation condition is carried out on 10 reactors which were arranged in series, while the reactor R1 as a control (single pass reactor) was operated without leachate recirculation. Recirculation is carried out every day for 90 days. BOD and COD in leachate samples were regularly monitored every week with two repetitions (duplo). The results indicate that leachate recirculation further increases the reduction of BOD and COD concentrations when compared with reactors without leachate recirculation. Removal of BOD in R1 reactors with addition of low and high concentrations leachate are 68% and 68.13% respectively. While removal of BOD in reactors with addition of low and high leachate concentrations are 83.98% and 92.15%. In general, reactors with leachate recirculation have higher BOD and COD removal compared to reactors without leachate recirculation. |
| Databáze: | OpenAIRE |
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