中文摘要：

化工废水经二级生化处理后虽然能明显改善出水水质,但往往还含有一些难以降解的有机物、溶解性无机物、有毒重金属,某些低浓度悬浊液中还留有一定程度的微小颗粒,很难达到排放标准。若未经处理直接排放,不但会污染水体,还会造成水资源的浪费。介绍了废水深度处理的现状,讨论了深度处理二级出水的生化以及物化方法,并对典型废水的深度处理实验做了总结。

英文摘要：

Secondary biological-chemical treatment can greatly improve the water quality,but the refractory organics,dissolved inorganic,and toxic heavy metals were still contained.There was even a certain degree of micro particles left in some low concentration suspensions.Therefore,it is difficult to meet emission standards.If discharged directly,it would not only pollute water,but also resulted in a waste of water resources.The present status of advanced treatment of wastewater was introduced.The biochemical-and physico-chemical-methods in deep treatment of secondary effluent were discussed and some experiments data about advanced treatment of typical wastewater were summarized.