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- W1993400671 abstract "The efficiency of nitrifying trickling filters varies with media type. Three sizes of crushed Leca (dried expanded clay) and three types of plastic media (Kaldnes rings, Norton rings, and a rolled mat of Finturf artificial grass) were tested in columns 1.5 m high and 11 cm in diameter. Synthetic water containing 1.5 mg total ammonia nitrogen (TAN) 1−1 and 1 mg PO43− l−1 was added at a rate of 0.5 l min−1 and a temperature of 15°C. The nitrification rate stabilised 7–8 weeks after start-up in the Leca fractions and artificial grass columns. For the other two media, no positive stabilization was observed over the duration of the experiment (140 days). At the end of the experimental period, the nitrification rate was 100% in the Leca fraction columns, 80% in the Kaldnes ring columns, 60% in the Norton ring columns and 40% in the artificial grass columns. The nitrification rate was between 0.1 and 0.2 g TAN m−2 day−1 in the different columns, and the hydraulic load was below 0.25 m3 m−2 day−1." @default.
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- W1993400671 date "2000-01-01" @default.
- W1993400671 modified "2023-10-15" @default.
- W1993400671 title "Efficiency of nitrification in trickling filters using different filter media" @default.
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- W1993400671 doi "https://doi.org/10.1016/s0144-8609(99)00032-1" @default.
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