肝素提取废水的GC-MS分析和处理研究

GC-MS analysis and treatment of heparin sodium wastewater

肝素钠废水含有高浓度无机盐和大量有机污染物,对环境具有潜在的毒性且难以处理,已经受到环境工作者的关注。为了了解废水的主要成分和处理此类废水,本实验用GC-MS对废水进行了分析,并且利用芬顿试剂对其进行了处理,结果发现废水中有机物有26种,其中脂肪酸和芳香衍生物占有较大比例,处理后,有机成分只有3种;讨论了影响处理效果的因素和最佳的工艺条件,发现当pH值为6.66,硫酸亚铁和过氧化氢的量分别为2.5 g/L和2.8‰(v/v),搅拌速度为2000 r/min,搅拌时间为15 min时,COD的去除率可达到94.50%。

Owing to high chloride ion and many organic compounds,heparin sodium wastewater is potential toxicity to the environment and difficult to be treated.Fortunately,it has attracted attention by environmental researchers.The treated and untreated wastewaters were analyzed by GC-MS,the result indicated that the proportion of palmitic acid and isobutyl octyl phthalate are higher,but after treated by Fenton reagent oxidation,they are not detected.At the same time,some main factors on the removal rate of COD,such as the amount of H2O2 and FeSO4, pH value and stirring time and speed, were investigated one by one in the experiment. As a result, optimal technical conditions were obtained. The removal rate of COD ean reach 94.50% when pH value is 6.66, the amount of FeSO4 and H2O2 is 2.5 g/L and 2.8‰ （v/v） respectively, stirring time is 15 minutes and stirring speed is 2 000 r/min.