Influence of salinity on partial nitrification in a submerged biofilter
Influence of salinity on partial nitrification in a submerged biofilter
复制标题
DOI：
10.1016/j.biortech.2012.05.057
复制
发表时间：
2012-08-01
影响因子：
11.4
通讯作者：
Simsek, Erdal
中科院分区：
文献类型：
--
作者：
Aslan, Sukru;Simsek, Erdal
在浸没式生物滤池中，研究了不同NaCl浓度（0 ~ 40 g/l）在恒定运行条件下的部分硝化作用。无盐废水在NH4-N/m(3) d的NLR为830 g时NO2-N/NOx-N比最高，为0.76。当NaCl浓度为1 g/l时，盐含量的小幅增加使活性提高，NH4-N去除率从92%提高到95%。在此浓度下，每次NaCl的加入均引起NH4-N氧化，抑制作用急剧增强。在不添加盐的情况下，总氧化NH4-N的氮负荷率（NLR）和表面负荷率（SLR）分别为0.754 kg/m(3) day和3.23 g/m(2) day，在PNBR中盐度为40 g/l时，总氧化NH4-N分别降至0.322 kg/m(3) day和1.38 g/m(2) day。(C) 2012 Elsevier Ltd.版权所有。
Partial nitrification under various concentrations of NaCl (0-40 g/l) at a constant operational condition was investigated in a submerged biofilter reactor. The highest NO2-N/NOx-N ratio (0.76) was achieved at the NLR of 830 g NH4-N/m(3) day with salt free wastewater. Small increase the salt content led to higher activities and the NH4-N removal efficiency increased from 92% to 95% at 1 g/l NaCl concentration. Over this concentration, each NaCl addition provoked the NH4-N oxidation and a sharp increase of inhibition was observed. The total oxidized NH4-N was achieved at the nitrogen loading rate (NLR) and surface loading rate (SLR) of 0.754 kg/m(3) day and 3.23 g/m(2) day, respectively without salt in the feed wastewater and it was decreased to 0.322 kg/m(3) day and 1.38 g/m(2) day at the salinity of 40 g/l in the PNBR. (C) 2012 Elsevier Ltd. All rights reserved.