超重力床+活性炭臭氧+沸石处理炸药废水工程调试

Engineering commissioning of using dupergravity and activated carbon ozone and zeolite to treat explosives wastewater

某单位采用超重力床+紫外线臭氧氧化法预处理炸药生产高浓度有机废水,再用活性炭臭氧氧化+沸石吸附法处理炸药生产综合废水。经过调试运行,超重力床单元在温度50℃时,COD的去除率为75%,氨氮去除率为35%,TNT去除率13%;紫外线臭氧氧化单元,COD去除率可达30%,TNT去除率可达40%,但对氨氮无去除效果;活性炭+臭氧氧化单元的COD去除率达到65%,TNT去除率达到30%,但氨氮去除率小于10%;活性炭+沸石吸附单元的COD去除率大于50%,氨氮去除率可达到80%。为了降低沸石的更换频率,在沸石填料中种植了菖蒲和美人蕉等水生植物,利用沸石对氨氮进行富集,再利用植物对氨氮进行吸收利用。废水处理装置经过调试、整改后,运行效果良好,处理出水水质达到《弹药装药行业水污染排放标准》(GB 14470.3-2011)。

The explosive wastewater was classified into high concentration organic wastewater and comprehensive wastewater. First, high concentrations of organic wastewater was pretreated with supergravity bed 4. ultraviolet ＋ ozone oxidation 4-technology, then the comprehensive wastewater was treated with activated carbon 4- ozone oxidation4-zeolite adsorption technology. After commissioning, in the supergravity unit, the removal efficiency of COD was 75%, the removal efficiency of Ammonia nitrogen was 35 %, the removal efficiency of TNT was 13 %. In the ultravio- let 4- ozone oxidation unit, the removal efficiency of COD could reach 30 %, and the removal rate of TNT could reach 40%, but the ammonia nitrogen had no efficiency. In the activated carbon 4- o- zone oxidation unit, the removal rate of COD reached 65%, the TNT removal rate reached 30%, but the ammonia nitrogen removal rate was less than 10%. In the carbon 4- zeolite adsorptionunit, the removal efficiency of CODwas more than 50%, the removal efficiency of Ammonia nitrogen could reach 80%. In order to reduce the frequency of zeolite replacement, acorus and cannas were planted in zeolite fillers, first the ammonia nitrogen was enriched with zeolite , and then was ab- sorbedby the aquatic plants. After the wastewater treatment equipment was debugged, the opera- tion effect was good, and the standard of Water Pollution Discharge of Ammunition Filling In-dustry （GB14473--2011） was reached by the water quality of the discharged water.