摘要
利用Design-expert V8.0.6软件对芬顿法降解阻燃剂废水的H_2O_2、FeSO_4·7H_2O含量和pH进行优化实验。结果表明,优化运行条件为pH=3.15,Fe^(2+)、H_2O_2的质量浓度分别为1、10.1 g/L,COD降解率最高为70.28%,并获得相应的二次回归方程。验证实验表明响应曲面法获得的优化条件有效。制备载铁活性炭(Fe/GAC)进行电子显微镜扫描及X射线能谱仪表征分析,使之代替Fe^(2+)降解阻燃剂废水中的COD,COD的降解率可达98.78%,对比实验表明,Fe/GAC类芬顿法解决了Fe^(2+)的固定化问题,对阻燃剂废水中COD的降解也可起到很大促进作用,相较于其生物降解效率更高。
Design-expert V8.0.6 was used to optimize the content of H2O2, FeSO4-7H2O and pH of flame retardant wastewater by fenton-like method. The results showed that when pH=3.15, the mass concentration of Fe2＋, H2O2 was 1 g/L, 10.1 g/L, the operating condition was optimal. The highest degradation rate of COD was 70.28%, quadratic regression equation between factors and response values was obtained. Confirmatory experiments indicated that the optimal condition achieved by response surface methodology was effective. Iron loaded granule activated carbon （GAC/Fe） was prepared to replace Fe2＋ to degrade COD in the flame retardant wastewater. The Scanning Electron Microscopy and energy dispersive X-ray spectroscopy characterization results showed that Fe was loaded on GAC and the degradation rate of COD is 98.78%. The problem of immobilized Fe2＋ was solved by GAC/Fe fenton-like method, and the degradation rate of COD was improved in the flame retardant wastewater, which was higher than biodegradation.
出处
《水处理技术》
CAS
CSCD
北大核心
2017年第4期89-93,共5页
Technology of Water Treatment
基金
国家自然科学基金项目(51478283
51308300)
江苏省普通高校学术学位研究生科研创新计划项目(SKCX15_024)
关键词
类芬顿
阻燃剂废水
降解率
活性炭
优化
Fenton-like
flame retardant wastewater
degradation rate
activated carbon
optimization
