超声/微电解协同处理含磷废水  

SYNERGETIC TREATMENT OF PHOSPHORIC WASTEWATER BY ULTRASOUND/MICRO-ELECTROLYSIS

作　　者：杨慧[1] 薛建军[1] 王玲[1] 孔令国[1] 王兆崴[1] 凌世盛[1] 陈玉兰[1] 

机构地区：[1]南京航空航天大学材料科学与技术学院,江苏南京211100

出　　处：《水处理技术》2011年第2期85-89,共5页Technology of Water Treatment

基　　金："十一五"国家科技支撑计划(2006BAD04A12)

摘　　要：试验采用超声/微电解联合体系处理含磷废水。以含磷废水为目标污染物,主要考察了温度、废水的浓度、反应时间、废水的初始pH、铁炭比和铁水比对废水中总磷去除效果的影响。在此基础上,挑选主要影响因素设计正交试验(L9(34)),得出反应条件的最优组合;超声辅助进行单因素对比试验,论证超声辅助能否大幅度提高除磷效果。结果表明,最佳的工艺条件为初始pH=4.00,反应时间60 min,铁炭体积比2:1,铁水体积比1/10,且在最佳条件下,总磷的去除率为77.3%,超声波技术联用后,总磷的去除率可高达92%以上。对比试验结果和动力学研究表明,超声波对微电解技术有良好的协同作用,协同因子E=2.25,且降解过程符合表观1级动力学规律。The synergetic treatment of phosphoric wastewater by ultrasound/micro-electrolysis was studied. The simulate phosphoric wastewater was considered as the main contaminant and the effects of temperature,reaction time,initial pH value of wastewater, Fe/C ratio and Fe/H2O ratio on the removal efficiency were investigated. The results showed that： the temperature and the concentration of wastewater little effect on the total phosphorus removal rate; the initial pH value, reaction time, Fe/C ratio and Fe/H2O ratio were the four factors which effect significantly. On this basis, the main factors were selected to conduct orthogonal experiment （L9 （3 4）） in order to obtain the optimal combination of reaction conditions; The single-factor comparison tests of ultrasound-assisted were completed to demonstrate whether the phosphorus removal efficiency can highly increased. The result showed that the removal rate of total phosphoruswas 77.3% at the initial pH value of 5.00 in 60 min when the Fe/C and Fe/H2O volumetric ratio were 2/1 and 1/10, respectively. After ultrasound assisted, the removal rate of TP could be as high as 92% under the same conditions. Comparison of experimental results and kinetic studies indicated that ultrasound of the micro-electrolysis technology had a good synergy with a eofactor of 2.25, and the degradation reaction complied with the pseudo first-order kinetic model.

关 键 词：微电解 含磷废水 超声波 协同效应 动力学 

分 类 号：X703.1[环境科学与工程—环境工程]