作　　者： ; ;

机构地区： 华南理工大学轻工与食品学院制浆造纸工程国家重点实验室

出　　处： 《广东造纸》 2000年第4期14-19,共6页

摘　　要： 混凝静态实验表明：在最佳条件下可去除 ６９％ＣＯＤｃｒ，随着 ｐＨ值的增加，ＡＯＸ去除率逐渐升高，且增加硫离子可显著提高ＡＯＸ的去除率。混凝－厌氧－好氧一体化反应装置，能有效地处理纸浆含氯漂白废水，在整个反应器停留时间为 １５ｈ时，出水 ＣＯＤｃｒ、ＢＯＤ５、ＡＯＸ分别降为 ２０３ｍｇ／ｌ、７０ ｍｇ／ｌ和０．９２ ｍｇ／ｌ，达到造纸行业ＧＷｐＢ２－１９９９排放标准，整个系统ＣＯＤ、ＢＯＤ、ＡＯＸ毒性值去除率分别达８８．１％，８１．０％、９８．４％、９２％。ＧＣ－ＭＳ实验结果表明：原废水污染物是以氯代酚为主的氯代有机物，厌氧单元通过还原脱氯及酸性水解，氯代有机物得到了基本的去除，使废水的毒性、ＡＯＸ大大降低。ＣＯＤＳＯＤ主要在混凝、好氧单元得到了去除。废水经好氧处理后低分子量的酸性组分和烷烃类明显增加，表明污染物得到了进一步的氧化降解。 The stationary coagulation batch experiment results show that the optimal removal rates of CODcr is 69 %, the AOX reduction rises with increasing pH and is considerably pronounced in the presence of sulfide. The coagulation-anaerobic acidification-aerobic reactor was investigated for the treatment of pulp CEH bleaching effluents, CODcr.BOD5 .AOX of the discharged effluents are 203 mg/l.70 mg/l. 0. 92 mgn respectively, which reaches the paper industry discharge stan- dard GWPB2-1999. The removal rates of CODcr.BOD5 .AOX and toxicity are 88. 1 % .81. 0 %、 98. 4 % and 92. 0 % with 15h retention time. The results of GC-MS show: pollutants of wastewa- ter are mainly chlorinated organisms chlorophenol,most of AOX and the toxicity are removed by reduced dechlorination and acidified hydrolysis in anaerobic unit, the high COD removal rate in aerobic unit with significantly increasing of acidic and alkyl substance shows further degradation of pollutants.

关 键 词： 混凝 厌氧水解 好氧 漂白废水 污染处理

领　　域： [环境科学与工程]