摘要
利用Fe(Ⅲ)-亚硫酸盐体系对实际含砷酸性废水通过混凝-氧化-混凝工艺进行处理,并利用响应面分析法对工艺过程进行优化,结果发现二次多项式模型可以很好的模拟实验结果,根据模型所预测的最优条件是在氧化过程中p H为3.53、250 m L原液中Fe(Ⅲ)投加量为0.46 mmol、Na2SO3投加量为0.60 mmol,最终的响应值总砷去除率为90.70%,根据模型所预测的最优条件进行实验,得到总砷去除率实验值为93.90%,与模型预测值的相对偏差为3.53%。
The Fe（Ⅲ ）-sulfite system was used to treat the arsenic acid wastewater through a coagulation- oxidation-coagulation process, and the response surface methodology （RSM） was used to optimize it. Results in- dicated that the quadratic polynomial model can simulate the experimental results quite well. According to the model, in the oxidation process, the predicted optimal conditions are pH of 3.53, Fe （111） dosage of 0.46 mmol, and sulfite dosage of 0.60 mmol in a 250 mL solution, resulting in a final response of 90.70% in the total arsenic removal efficiency. Experiments under the optimal conditions predicted by the model reveal that the ex- perimental total arsenic removal rate is 93.90% , and that the relative deviation to the predicted value is 3.53%.
出处
《环境工程学报》
CAS
CSCD
北大核心
2016年第9期4803-4807,共5页
Chinese Journal of Environmental Engineering
基金
国家自然科学基金资助项目(21077080)
武汉大学资源与环境科学学院实验中心地理环境综合调查开放实验资助项目(610400011)
