高级氧化技术耦合工艺预处理DNT废水的试验研究  

EXPERIMENTAL STUDY ON PRETREATMENT OF DNT WASTEWATER WITH COUPLING PROCESSES OF ADVANCED OXIDATION TECHNOLOGY

作　　者：侯晓婷[1] 刘有智[1] 焦纬洲[1] 申红艳[1] 白梅[1] 冯国琳[1] 

机构地区：[1]中北大学山西省超重力化工工程技术研究中心,山西太原030051

出　　处：《水处理技术》2011年第3期91-95,共5页Technology of Water Treatment

基　　金：火炸药青年创新基金

摘　　要：为使DNT废水达到可生化处理,提出采用酸析-超声波+超重力+臭氧高级氧化技术耦合工艺对其进行预处理的方法。结果表明,在超重机转速为1 400 r.min-1、初始pH为12、臭氧投加量为50 mg·min-1、超声波功率为900 W、气液体积比为0.5、处理时间为5 h的条件下,酸析后的DNT废水经超声波+超重力+臭氧法氧化处理后,其COD去除率达到94.04%,硝基化合物去除率达98.6%,BOD/COD为0.68,可使用一般的生化法进行后续处理。To achieve the target of biochemical treatment of DNT wastewater, a new advanced oxidation coupling technologies is used for pretreatment which is ultrasound＋high-gravity＋ozone processes combined with acid precipitation. The results showed that,when speed of rotating packed bed is 1 400 r·min^-1, initial pH value is 12, ozone dosage is 50 mg ·min^-1, ultrasonic power is 900 W, ratio of gas to liquid is 0.5 L·L^-1 and reactive time is 5 h, after acid precipitation, treating DNT wastewater by applying ultrasound＋high-gravity＋ozone processes, the COD removal rate reach 94.04%, the nitro compounds removal rate reach 98.6%,BOD/COD =0.68, the subsequent treatment can be reached by general biochemical processing.

关 键 词：酸析 超声波 超重力 臭氧 DNT废水 

分 类 号：X789[环境科学与工程—环境工程] TQ031.7[化学工程]