城市景观水体评价及Fe_2SO_4/KMnO_4/H_2O_2联用处理景观水试验研究

Assessment of civil Landscape waters and study of landscape water treatment by Fe_2SO_4/KMnO_4/H_2O_2 process

将BOD5指标和综合营养状态指数(TLI)法运用到某市景观水体评价中,并以此为基础开展了Fe_2SO_4/KMnO_4/H_2O_2联用处理景观水的研究。评价结果表明:所考察景观水体有机污染物浓度高,水体呈富营养化状态。进而以COD和TP去除率为评价指标,采用正交试验方法考察了Fe_2SO_4/KMnO_4/H_2O_2联用处理景观水过程中4个因素(反应时间、Fe_2SO_4投加量、KMnO_4投加量、H_2O_2投加量)对有机污染物和TP去除的影响。试验结果表明:4个因素主次关系为反应时间、Fe_2SO_4投加量、KMnO_4投加量及H_2O_2投加量;最佳反应时间、Fe_2SO_4最佳投加量、KMnO_4最佳投加量、H_2O_2最佳投加量分别为30 min、10 mg/L、50 mg/L和60 mg/L。

The B0D5 index and the Comprehensive Trophic Level Index （TLI） method were applied to the evaluationof the landscape water in a city, and the research on the treatment of landscape waters was carriedout on the basis of the FE2S04/KMN04/H 20 2. The results showed that the concentration of organic pollutantsin the landscape water was high and the water body was eutrophic. The effect of 4 factors （ reaction time,Fe2so4 dosing, KMn04 dosing, $ literal dosing） on the removal of organic pollutant and TP were investigatedby orthogonal test in the process of FE2S04/KMN04/H 20 2 combined with the removal rate of cod and TP as the evaluation index. The results showed that the priority of the four factors affecting organic material and TPremoval are reaction time, Fe2S0 4 addition, K M n 0 4 addition and H 20 2 addition, respectively. Moreover, theoptimum reaction time, Fe2S0 4 addition, K M n 0 4 addition and H 20 2 addition are 30 m i n , 10 m g / L , 50 m g / Land 60 m g / L , respectively.