摘要：Activated carbon after saturated adsorption of EDTA was used as particle electrode in a three-dimensional electrode reactor to treat EDTA-containing *** method was used to regenerate activated carbon after many times of *** on the analysis of infrared spectra of activated carbon after adsorption and repeated electrolysis,EDTA was degraded into glycine,and then non-catalytic activated associated complex was formed with N—H bond on the activated *** catalytic ability of the activated carbon vanished and the EDTA degradation efficiency was *** carbon could be effectively regenerated by electrochemical method in the three-dimensional *** of electric current,conductivity and pH on activated carbon regeneration were investigated,and the optimum conditions were concluded as follows：100-300 mA of current intensity,1.39 mS/cm of electric conductivity,60 min of electrolysis time and pH *** the optimized conditions,the activity of the activated carbon can be recovered and the residual total organic carbon（TOC） was below 10 mg/L（the initial TOC was 200 mg/L） in the three-dimensional electrode reactor.

摘要：以水合铝盐及石灰乳为脱除剂,采用实验室自行配制的模拟废水,对工业废水中高浓度硫酸根的脱除进行研究。考察溶液pH值、铝盐加入量、反应时间、SO24-初始浓度以及反应温度等因素对硫酸根去除率的影响,并设计三因素三水平正交实验。得出单因素和正交实验确定的最佳工艺条件为:反应温度25℃,反应时间60min,溶液pH值11.0,SO42-与Al3+的物质的量比为1.1-1.0,且各因素影响程度由大至小的顺序为:溶液pH值、铝盐加入量、反应时间;在最佳工艺条件下,硫酸根离子质量浓度由1720mg/L降至100mg/L以下,达到生活饮用水卫生标准。沉淀物XRD检测结果表明:其主要物相为钙矾石(Ca6Al2(SO4)3(OH)12·26H2O)。

摘要：采用聚合硫酸铁一中和法处理镍电解废水。根据正交设计实验,得出最佳工艺条件为:pH值9.0,聚合硫酸用量为镍含量的2倍, 聚丙烯酰胺用量为4mg/L,反应为常温,测定时间为2～3min。处理后水中镍残余浓度<0.13mg/L,钴<0.01mg/L,铜<0.005mg/L,COD_(Cr)<70mg/L;沉淀时间为2～3min。