活性炭吸附分离—生物再生法处理高盐苯胺废水

Treatment of High Salinity Aniline-Containing Wastewater by Activated Carbon Adsorption Separation-Biological Regeneration Process

采用活性炭吸附分离-生物再生法处理高盐苯胺废水，对活性炭吸附分离效果、生物再生的影响因素及其原理和稳定性进行了考察。当NaCl质量分数为15％时，活性炭对苯胺的饱和吸附量为320～380mg／g，对NaCl的分离效率大于99％。在25℃、接种量为25％的条件下，吸附饱和的活性炭经过120h生物再生，再生效率达80％以上。该方法处理效果稳定，4次循环运行后对NaCl的分离效率和生物再生效率均无明显变化。

The high salinity aniline-containing wastewater was treated by activated carbon adsorption separation - biological regeneration process. The adsorption separation effect of activated carbon and the affecting factors, principle and stability of biological regeneration were studied. When the mass fraction of NaCl is 15%, the adsorbing capacity of activated carbon to aniline is 320-380 mg/g and its separation efficiency to NaCl is 99%. After bio-regenerated for 120 h under the conditions of 25℃ and inocuhim size 25%, the percentage regeneration of saturated activated carbon is over 80%. This process has a steady treatment effect with no obvious change of both separation efficiency and biological percentage regeneration after 4 times of adsorption-regeneration circulations.