电化学腐蚀法预处理难生化的染料中间体废水研究

THE INVESTIGATION OF THE PRETREATMENT OF REFRACTORY DYEING INTERMEDIATE WASTEWATER BY GALVANIC CORROSION PROCESS

染料中间体二硝基氯化苯废水对生物具有毒性，是目前最难处理的废水之一。本研究采用铁屑—煤渣法对该废水进行预处理，以改善它的可生化性能，降低废水中的ＣＯＤ和色度。研究结果表明，经铁屑—煤渣处理之后，出水可生化性好，对生化过程无明显的抑制作用，同时废水的ＣＯＤ和色度的去除率也很高。

Dye intermediate Dinitro chlorobenzene is toxic for micro organism and one of the most hard treated kinds of wastewater. A pretreatment method for its biological treatment and removal of COD and colorization using combined iron scrap—coal cinder has been studied. The research results show that the effluents after pretreatment by using iron scrap—coal cinder have better biodegradability without obvious inhibition to biological process.On the other hand, the removal ratio of COD and colorization is also very high.