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Yaman C.,Istanbul Metropolitan Municipality Directorate of Waste Management | Ozcan H.K.,Istanbul University | Demir G.,Bahcesehir University | Okten H.E.,Bahcesehir University | And 3 more authors.
Clean - Soil, Air, Water | Year: 2012

One of the most important problems arising from landfilling solid wastes is the leachate which contains high amount of pollution. Discharge of leachate without treatment causes negative effects on environmental and public health. In this study, parameters of chemical oxygen demand (COD), total nitrogen (TN), ammonia nitrogen (NH4-N), and total phosphorus (TP) were examined in the samples taken from the influent and effluent of leachate treatment plant, where Odayeri landfill leachate is treated. Obtained results showed that the treatment plant, which consisted of preanoxic biological treatment system, ultrafiltration (UF) and nanofiltration (NF) units were operating with high efficiency. Among the examined parameters during study, COD, TN, NH4-N, and TP were found to be treated at the rate of 99, 94.5, 99, and 93.8%, respectively. Landfilling is increasing rapidly in the world and this consequently brings the need of leachate treatment facilities. Therefore, this study is considered to be a guide for construction and operation stages of proposed new treatment plants. © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. Source

Coban A.,Bahcesehir University | Demir G.,Bahcesehir University | Okten H.E.,Bahcesehir University | Ozcan H.K.,Istanbul University | And 2 more authors.
Environment Protection Engineering | Year: 2012

The most common municipal solid waste (MSW) disposal method is sanitary landfill. The major disadvantage of this method is the production of highly contaminated leachate. Not only physicochemical but also biological methods are sufficient alone in order to remove organics from leachate to get high effluent quality. Integrated processes that use physicochemical and biological methods at the same time like membrane bioreactors (MBRs) have been mostly employed in landfill leachate treatment in last decade. In this study, the removal of organic material using aerobic/anoxic MBR system followed by a nanofiltration process was evaluated. Source

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