Cultivation of granular sludge with hypersaline oily wastewater
Cultivation of granular sludge with hypersaline oily wastewater
复制标题
DOI：
10.1016/j.ibiod.2015.09.009
复制
发表时间：
2015-11
影响因子：
4.8
通讯作者：
S. F. Corsino;R. Campo;G. D. Bella;M. Torregrossa;G. Viviani
中科院分区：
文献类型：
--
作者：
S. F. Corsino;R. Campo;G. D. Bella;M. Torregrossa;G. Viviani
稳定成熟需氧颗粒所需的时间变化很大。此外，培养时间和颗粒的结构特征似乎与废水进水的性质有关。颗粒污泥已被用于处理多种工业废水，但尚未有关于同时存在碳氢化合物和高氯化物浓度的废水的报道。在这项工作中，作者分析了两个颗粒序批式气升反应器 (GSBAR) 中的造粒过程和性能以及好氧颗粒的物理特性，反应器 1 (R1) 中加入醋酸盐合成废水，并加入真实和模拟污水的混合物 (R2)。 100天内获得的结果表明两个反应器均实现了完全造粒。 R2 中的颗粒发育得更快，但它们看起来稍微不稳定并且更容易破裂。尽管盐浓度较高，但除磷和除碳的效率令人满意。在 R1 中观察到低硝化活性，证实需要更长的时间来获得好氧颗粒中自养生物量的适应。在 R2 中，盐度和碳氢化合物的联合作用导致自养生物量受到抑制，导致硝化作用不存在。碳氢化合物首先通过吸附去除，然后通过生物降解去除，去除率超过90%。
The time required to stabilise mature aerobic granules is rather variable. In addition, cultivation time and the structural characteristics of granules seem to be related to the nature of wastewater influent. Granular sludge has been used for the treatment of several industrial wastewaters, but nothing has been reported about wastewater characterized by the simultaneous presence of hydrocarbons and high chloride concentration. In this work, the authors analysed the granulation process and performance as well as the physical characteristics of aerobic granules in two Granular Sequencing Batch Airlift Reactors (GSBARs), fed with acetate-based synthetic wastewater in reactor 1 (R1) and with a mixture of real and simulated slop (R2). The results obtained in 100 days show that full granulation was achieved in both reactors. The granules in R2 developed more quickly, but they appeared slightly unstable and more susceptible to breaking. Despite high salt concentration, the efficiency of phosphorous and carbon removal was satisfactory. Low nitrification activity was observed in R1, confirming that a longer time is necessary to obtain the acclimation of autotrophic biomass in aerobic granules. In R2 the combined effect of salinity and hydrocarbons caused the inhibition of the autotrophic biomass, with the consequence that nitrification was absent. Hydrocarbons were initially removed by adsorption afterwards by biological degradation with a removal efficiency of over 90%.