高铁酸钾氧化处理高浓度农药废水的研究

摘要

采用高铁酸钾氧化法对高浓度农药废水进行处理,考察其对CODCr及NH3-N的降解效果.实验结果表明,废水初始浓度、高铁酸钾投加量,废水初始pH值和反应时间均对废水的CODCr及NH3-N去除率产生影响.实验中霜脲氰废水的最佳处理条件为:废水初始CODCr质量浓度为3550.8 mg/L,NH3-N质量浓度为311.83 mg/L,高铁酸钾投加量为2 g/L,废水初始pH值为4,反应时间40 min.CODCr去除率最高达48.3%,NH3-N去除率最高为51.91%.%In this study, potassium ferrate was used in high concentrations of cymoxanil wastewater treatment, and the degradation rates of CODCr and NH3-N were investigated respectively. The results indicated that, the initial concentrationin and pH of wastewater, the dosages of potassium ferrate, and the reaction time all had impacts on the experimental results. Under the conditions with pH at 4, the dosage of potassium ferrate were 2 g/L , the initial CODCr and NH3-N concentrationin of wastewater were 3550.8 and 311.83 mg/L respectively. The reaction time was 100 min, the removal rate of COD Cr was 48.30%and the removal rate of NH3-N was 51.91%.