吸附-氧化法应急处理饮用水源突发苯酚污染的研究
Research on emergency treatment of accidental phenol pollution of drinking source water by adsorption-oxidation process
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摘要: 以黄浦江上游水源地突发苯酚污染为背景，重点考察了粉末活性炭（PAC）吸附、高锰酸钾（KMnO4）氧化及两者联用技术的除酚效能。结果表明，活性炭及氧化剂种类的选择是影响处理效果的重要因素，微孔发达、比表面积巨大的竹炭对苯酚的去除效果明显优于煤质炭、椰壳炭和木质炭；KMnO4对苯酚的氧化能力强于次氯酸钠和高铁酸钾。增大PAC和KMnO4的投加量，可有效提高对苯酚的去除率；PAC吸附-KMnO4氧化联用技术可大大提高除酚效能Abstract: Against the background of accidental phenol pollution occurred in water head site situated at upstream of Huangpu River，the removal efficiencies of the adsorption of phenol by powdered activated carbon (PAC) adsorption，potassium permanganate oxidation and the two combination techniques were mainly investigated. The results showed that the choice of activated carbon and oxidizing agent was the significant factor to affect phenol removal rate. The phenol removal by bamboo charcoal with abundant micropores and large specific surface area is obviously better than that by coal-based，coconut shell-based or ligneous-based PAC. The oxidation capacity of potassium permanganate to phenol is better than sodium hypochlorite or potassium ferrate. The phenol removal rate can be effectively increased via raising PAC and potassium permanganate dosage. PAC adsorption coupled with potassium permanganate oxidation could significantly improve the removal efficiency of phenol. Using 50 mg/L PAC combined with 2 mg/L potassium permanganate，phenol content in polluted raw water could be decreased from initial concentration of 250 μg/L and 500 μg/L to 18 μg/L and 66 μg/L，respectively. PAC adsorption coupled with potassium permanganate oxidation process is an effective emergency measure to deal with high concentration phenol pollution.
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Key words:
- T. tubifex /
- chlorine dioxide /
- inactivation /
- hydroxyl radical(?OH) /
- catalase (CAT)
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