Department of Chemical Engineering, University of Santiago of Chile, Santiago, Chile.
J Environ Manage. 2012 Jun 30;101:82-91. doi: 10.1016/j.jenvman.2012.02.015. Epub 2012 Mar 7.
Although simultaneous denitrification-anaerobic digestion has been studied extensively, the use of salmon effluents as organic matter source has received little attention. This study evaluated the effect of C/N ratio, nitrate concentration, and organic load rate (OLR) on simultaneous nitrate and organic matter removal using salmon effluents. The study was carried out in a batch reactor with suspended biomass at 37 °C and pH 7.5, and in continuous biofilm tubular reactors at 37 °C fed with a mixture of a synthetic substrate and a saline protein-rich salmon-plant effluent. The results of the batch and continuous experiments showed that nitrate abatement was greater than 95% at all the studied C/N ratios, without effect of the C/N ratio on NO(3)(-)-N transformation and ammonia production. An increase of nitrate concentration increased organic matter consumption as well as the hydrolytic rate. The organic matter reduction varied between 88% and 40% in the continuous process. For a continuous process, the increase of the OLR decreases the removal of organic matter.
尽管同时进行反硝化-厌氧消化已经得到了广泛的研究，但利用鲑鱼废水作为有机物质源的应用却很少受到关注。本研究评估了 C/N 比、硝酸盐浓度和有机负荷率（OLR）对利用鲑鱼废水同时去除硝酸盐和有机物的影响。该研究在 37°C 和 pH7.5 的悬浮生物量分批反应器中进行，并在 37°C 下连续进行生物膜管式反应器实验，使用合成底物和富含盐蛋白的鲑鱼-植物废水混合物进料。分批和连续实验的结果表明，在所研究的所有 C/N 比下，硝酸盐去除率均大于 95%，C/N 比对 NO(3)(-)-N 转化和氨生成没有影响。硝酸盐浓度的增加增加了有机物的消耗和水解速率。在连续过程中，有机物的减少量在 88%到 40%之间变化。对于连续过程，OLR 的增加会降低有机物的去除率。
