【摘要】 分析了桉木高得率浆废水的有机污染特征，优化了该废水电场辅助微电解预处理的脱毒条件，并采用生物处理实验评估了电场辅助微电解的脱毒效果；进一步采用GC-MS法分析了原水(EW)、微电解(ME)和电场辅助微电解(EFME)预处理后废水的主要成分。结果表明：电场辅助微电解预处理的较佳条件为废水初始pH值4、电场强度1 kV/cm,此条件下反应60 min,其BOD值由未加电场时的2 480 mg/L提高到3 000 mg/L。原水经过微电解和电场辅助微电解后可生化性显著增加，生化需氧量/化学需氧量(BOD/COD,B/C值)从0.33分别提升到0.38和0.45,厌氧处理效率从55.5%分别提升至62.5%和70.0%,最终综合生化效率分别为75.2%、 78.6%和83.1%。桉木制浆废水经微电解和电场辅助微电解预处理后，废水中的酚类、有机酸及其衍生物等抗氧化活性物质被分解为容易进行生化处理的丙酸、丁酸等物质，使得酚类、酰胺类化合物含量下降，酸类物质含量提高，酸类物质从原水的5.2%提高到23.3%(ME)和20.8%(EFME),改善了废水的可生化性。更多还原

【Abstract】 This study analyzed the organic pollution characteristics of wastewater from high-yield eucalyptus pulping and optimized the detoxification conditions for electric field-assisted micro-electrolysis pretreatment of this wastewater. Biological treatment experiments were conducted to evaluate the detoxification effect, and gas chromatography-mass spectrometry(GC-MS) was used to analyze the main components of the eucalyptus wastewater(EW), micro-electrolysis(ME) treated wastewater, and wastewater pretreated by electric field-assisted micro-electrolysis(EFME). The results showed that the preferable conditions for electric field-assisted micro-electrolysis pretreatment were an initial pH of 4 and an electric field intensity of 1 kV/cm as well as a reaction time of 60 min. Under these conditions, the biochemical oxygen demand(BOD) value increased from 2 480 mg/L to 3 000 mg/L without electric field. After micro-electrolysis and electric field-assisted micro-electrolysis, the biodegradability of the wastewater significantly improved, with the BOD/chemical oxygen demand(BOD/COD, B/C value) increased from 0.33 to 0.38 and 0.45, respectively. The anaerobic treatment efficiency increased from 55.5% to 62.5% and 70.0%, respectively, with overall biochemical treatment efficiencies of 75.2%, 78.6%, and 83.1%, respectively. After pretreatment, the antioxidant substances in the wastewater, such as phenols, organic acids and their derivatives were decomposed into more biodegradable substances like propionic and butyric acids, resulting in a decrease in phenolic and amide compound content, while the acid content increased from 5.2% in the EW to 23.3%(ME) and 20.8%(EFME), thereby improving the biodegradability of the wastewater.更多还原