Shandong University, Jinan 250100, China.
Shandong University, Jinan 250100, China.
J Environ Sci (China). 2018 Jan;63:43-49. doi: 10.1016/j.jes.2017.02.016. Epub 2017 Mar 7.
A novel cathodic-anodic-electrolysis packing (CAEP) used in the treatment of pyridine wastewater was researched, which mainly consisted of 4,4'-diamino-2,2'-disulfonic acid (DSD acid) industrial iron sludge. The physical properties and morphology of the packing were studied. The CAEP was used in a column reactor during the pretreatment of pyridine wastewater. The influence of pH, hydraulic retention time (HRT), the air-liquid ratio (A/L) and the initial concentration of pyridine were investigated by measuring the removal of total organic carbon (TOC) and pyridine. The characterization results showed that the bulk density, grain density, water absorption percentage and specific surface area were 921kg/m, 1086kg/m, 25% and 29.89m/g, respectively; the removal of TOC and pyridine could reach 50% and 58% at the optimal experimental conditions (pH=3, HRT=8hr, A/L=2). Notably, the surface of the packing was renewed constantly during the running of the filter, and the handling capacity was stable after running for three months.
研究了一种用于吡啶废水处理的新型阴极-阳极-电解填料（CAEP），主要由 4,4'-二氨基-2,2'-二磺酸（DSD 酸）工业铁泥组成。研究了填料的物理性质和形态。在吡啶废水的预处理过程中，CAEP 被用于柱式反应器中。通过测量总有机碳（TOC）和吡啶的去除率，考察了 pH 值、水力停留时间（HRT）、气液比（A/L）和吡啶初始浓度的影响。表征结果表明，其堆密度、颗粒密度、吸水率和比表面积分别为 921kg/m、1086kg/m、25%和 29.89m/g；在最佳实验条件（pH=3、HRT=8hr、A/L=2）下，TOC 和吡啶的去除率分别可达 50%和 58%。值得注意的是，在过滤运行过程中，填料表面不断更新，运行三个月后处理能力稳定。
