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利用超声波处理焦化废水,系统考察了作用时间、超声功率、焦化废水初始pH值、化学需氧量(CODCr)和氨氮(NH4+-N)初始质量浓度、溶解气体等因素对去除废水中CODCr和NH4+-N的影响,并对超声复合氧化剂处理焦化废水进行了对比分析.结果表明,超声复合H2O2和Fenton试剂可发生协同作用,使CODCr和NH4+-N去除率显著提高,其去除率由大到小依次为:超声+Fenton>超声+H2O2>Fenton>超声>H2O2.结合GC-MS分析结果,对CODCr和NH4+-N的去除过程进行了初步探讨.发现处理后的焦化废水中萘类、蒽类和喹啉类等生物降解难的有机物的比例明显降低.
The effect of time, ultrasonic power, initial pH value of coking wastewater, CODCr, initial concentration of ammonia nitrogen (NH4 + -N), dissolved gas and other factors on removal of CODCr and NH4 + -N, and the comparative analysis of the treatment of coking wastewater by ultrasonic composite oxidant showed that the synergistic effect of ultrasonic composite H2O2 and Fenton reagent could significantly improve the removal rate of CODCr and NH4 + -N, and the removal rate of desulfurization from large to small The removal of CODCr and NH4 + -N were studied preliminarily as follows: ultrasound + Fenton> ultrasound + H2O2> Fenton> ultrasound> H2O2.The results of GC-MS analysis showed that naphthalene and anthracene And quinoline and other biodegradable organic matter significantly reduced the proportion of.