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The effect of ammonial loading, solids retention time and operating temperature on the biological nitrification and denitrification of high ammonia landfill leachate Azevedo, Barry

Abstract

The effect of ammonia loading, solids retention time and operating temperature (20, 17, 14, 12 and 10 °C) on the treatment of high ammonia landfill leachate (200, 300, 600, 1000, 1500 and 2000 mg NH4-N/L), was investigated. Two biological, single-sludge, nitrification-predenitrification systems were operated in parallel; one with a 10 day aerobic SRT, and the other with a 20 day aerobic SRT. The study consisted of two phases: an ammonia loading phase and a cold temperature phase. From the ammonia loading phase, it was found that at an influent leachate ammonia level of 1500 mg N/L, both systems produced an effluent of

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