pH对微气泡臭氧氧化处理染料废水影响  

Effect of p H on microbubble ozonation treatment of dyeing wastewater

作　　者：张静[1,2] 杜亚威[1] 茹星瑶[1] 刘春 杨景亮[1] 张磊[1] 刘晓静[1] 

机构地区：[1]河北省污染防治生物技术重点实验室,河北科技大学环境科学与工程学院,石家庄050018 [2]北京工业大学建筑工程学院,北京100022

出　　处：《环境工程学报》2016年第2期742-748,共7页Chinese Journal of Environmental Engineering

基　　金：河北省自然科学基金资助项目(E2015208140)

摘　　要：微气泡技术有助于改善废水臭氧氧化处理效果,p H值是影响微气泡臭氧氧化处理性能的重要因素。考察了不同初始p H值条件下,微气泡臭氧氧化处理酸性大红3R废水性能。结果表明,p H值对微气泡曝气中臭氧分解速率具有显著影响,强酸性和碱性条件下,微气泡曝气中臭氧分解速率均明显高于中性条件。同时,酸性和碱性条件下,微气泡臭氧氧化处理酸性大红3R的脱色速率和TOC去除速率明显高于中性条件。酸性条件下臭氧微气泡氧化能力最强,TOC去除速率约为中性条件的2倍,TOC去除率可达83.1%。酸性、碱性和中性条件下TOC去除量与臭氧消耗量的比值(R)分别为0.0372、0.0298和0.0180 mg/mg。不同初始p H值下微气泡臭氧氧化处理酸性大红3R过程中,臭氧利用率均高于99%。The performance of wastewater ozonation treatment could be improved when microbubble technology was applied. The p H value is a crucial factor for ozonation treatment. The microbubble ozonation treatment of acid red 3R wastewater was investigated under different initial p H. The results indicated the significant influence of p H on ozone decomposition in microbubble ozonation. The ozone decomposition under strong acid and alkaline conditions was faster than that under neutral condition. The decoloration rate and TOC removal rate in microbubble ozonation treatment of acid red 3R wastewater could be accelerated significantly under acid and alkaline conditions,compared with these under neutral condition. The TOC removal efficiency could reach up to83. 1% under acid condition and its TOC removal rate was about twice as high as that under neutral condition. In addition,the ratios of TOC removed to ozone consumed under acid,alkaline and neutral conditions were0. 037 2,0. 029 8 and 0. 018 0 mg / mg,respectively. These indicated that the strongest oxidative activity in microbubble ozonation could be achieved under acid condition. The ozone utilization efficiencies were higher than99% in the microbubble ozonation treatment under different initial p H.

关 键 词：微气泡 臭氧氧化 酸性大红3R PH 

分 类 号：X703.1[环境科学与工程—环境工程]