To investigate catalytic oxidation of ammonium from groundwater by a co-oxide filter film coating on quartz sands, a pilot-scale filter which has been operated for about 4years was used, and varying inlet ammonia loads and the filter was operated under inlet water only containing ammonia for long term. Results showed that in the experimental conditions of the concentration of ammonia nitrogen was 0.8~1.3mg/L, the temperature of raw water was 20~23℃, and the flow rate was 7m/h, the performance of catalytic oxidation of ammonium of the co-oxide filter film remained stable and high-efficient for a long time. The maximum ammonium removal capacity of the filter was determined to be 22.2g NH4+-N/(m3·h) with ammonium removal rate(ARR) determined by the ammonium loading rate(ALR) if the dissolved oxygen(DO) was enough. The maximum concentration of ammonia was limited by DO. When the DO in influent was not enough, flow rates had significant influence on consumption of dissolved oxygen along the filter layer.
布浩, 黄廷林, 郭英明, 邵跃宗, 刘杰. 石英砂表面活性滤膜去除地下水中氨氮的试验研究[J]. 中国环境科学, 2016, 36(4): 1045-1051.
BU Hao, HUANG Ting-ling, GUO Ying-ming, SHAO Yue-zong, LIU Jie. Removal of ammonium from groundwater by a co-oxide filter film coating on quartz sands. CHINA ENVIRONMENTAL SCIENCECE, 2016, 36(4): 1045-1051.
Tekerlekopoulou A G, Pavlou S, Vayenas D V. Removal of ammonium, iron and manganese from potable water in biofiltration units:a review[J]. Journal of Chemical Technology &Biotechnology, 2013,88:751-773.
Lee C O, Boe-Hansen R, Musovic S, et al. Effects of dynamic operating conditions on nitrification in biological rapid sand filters for drinking water treatment[J]. Water Research, 2014,64:226-36.
[4]
Tekerlekopoulou A G, Vayenas D V. Ammonia, iron and manganese removal from potable water using trickling filters[J]. Desalination, 2007,210(1):225-235.
[5]
Štembal T, Marki? M, Ribi?i? N, et al. Removal of ammonia, iron and manganese from groundwaters of northern Croatia-pilot plant studies[J]. Process Biochemistry, 2005,40(1):327-335.
[6]
Tekerlekopoulou A G, Vayenas D V. Simultaneous biological removal of ammonia, iron and manganese from potable water using a trickling filter[J]. Biochemical Engineering Journal, 2008,39(1):215-220.
[7]
Tatari K, Smets B F, Albrechtsen H J. A novel bench-scale column assay to investigate site-specific nitrification biokinetics in biological rapid sand filters[J]. Water Research, 2013,47(16):6380-6387.
Huang T I, Cao X, Zhang Q, et al. Catalytic oxidation of high-concentration ammonia in groundwater by a naturally formed co-oxide filter film[J]. Desalination and Water Treatment, 2013,52(7):1615-1623.
de Vet W W, Kleerebezem R, van der Wielen P W, et al. Assessment of nitrification in groundwater filters for drinking water production by qPCR and activity measurement[J]. Water Research, 2011,45(13):4008-4018..
[20]
Laurent P, Kihn A, Andersson A, et al. Impact of backwashing on nitrification in the biological activated carbon filters used in drinking water treatment[J]. Environmental Technology, 2003, 24(3):277-87.
[21]
van den Akker B, Holmes M, Cromar N, et al. Application of high rate nitrifying trickling filters for potable water treatment[J]. Water Research, 2008,42(17):4514-24.
[22]
Lopato L, Röttgers N, Binning P J, et al. Heterogeneous Nitrification in a Full-Scale Rapid Sand Filter Treating Groundwater[J]. Journal of Environmental Engineering, 2013, 139(3):375-384.
