介绍了"深床反硝化生物滤池+特种微生物"脱除总氮技术工艺，并以石化废水为处理对象开展了中试试验研究。试验结果表明，该技术可以对废水中的总氮污染物进行有效去除，总氮去除率达80%以上，出水总氮小于15 mg/L，处理后水质满足最新的污染物排放标准。

The technology for removing total nitrogen by "deep bed denitrification biological filter+special microorganism" is introduced, and is studied through pilot test in treating with e petrochemical wastewater.The test results reveal that this technology can remove effectively total nitrogen pollutants in the wastewater with a removal rate over 80% and total nitrogen in the effluent less than 15 mg·L^-1.The quality of water after treatment can meet the latest discharge standard.