Abstract This study was carried out, at both laboratory- and pilot-scale, to investigate whether the presence of phosphorus affects the nitrification process during aerobic digestion of aquaculture/aquaponic solid waste. Results from the laboratory-scale aerobic digestions indicated that nitrification did not occur throughout the entire bioprocessing period (21 days) in aerobic bioreactors containing phosphorus. The mineralization process in laboratory-scale aerobic bioreactors which did not contain phosphorus, on the other hand, followed the typical non-inhibited nitrogen mineralization (i.e., release of ammonium, NH4+ followed by oxidation into nitrate, NO3−). Results from pilot-scale aerobic digestions confirmed that the presence of phosphorus did impact the nitrification of aquaculture/aquaponic solid waste. However, analytical data and modeled parameters revealed that the presence of phosphorus significantly (P = 0.0406) delayed the onset of nitrification (lag period of 9.2 days for aerobic bioreactors without the presence of phosphorus compared to 29.3 days for aerobic bioreactors containing phosphorus, corresponding to a delay period of 3 weeks) but did not influence (P > 0.05) the nitrification kinetic parameters (i.e., maximum nitrate concentration (99.5–101.1 mg/L) and maximum rate of nitrate production (11.3–19.6 mg/L/day)).

中文翻译：

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磷在水产养殖/鱼菜共生固体废物有氧消化过程中延迟硝化作用的开始

摘要 本研究在实验室和中试规模上进行，旨在研究磷的存在是否影响水产养殖/鱼菜共生固体废物有氧消化过程中的硝化过程。实验室规模的好氧消化的结果表明，在含磷的好氧生物反应器中，在整个生物加工期间（21 天）没有发生硝化作用。另一方面，不含磷的实验室规模的好氧生物反应器中的矿化过程遵循典型的非抑制性氮矿化（即释放铵，NH4+，然后氧化成硝酸盐，NO3-）。中试规模的好氧消化的结果证实，磷的存在确实影响了水产养殖/鱼菜共生固体废物的硝化作用。然而，