物化-生物组合工艺处理TNT红水

采用酸析+微电解+混凝沉淀+减压蒸馏+固定化微生物滤池+活性焦吸附组合工艺处理兵器八○五厂(襄樊分部)的TNT红水,出水中的硝基化合物浓度多小于0.8 mg/L,且多次未检出;COD最高值为76 mg/L,平均值为51.6 mg/L;色度为20°;苯胺浓度全部小于1 mg/L,达到了中试方案提出的要求,出水水质指标符合《兵器工业水污染物排放标准火炸药》(GB14470.1-2002)的要求.中试期间设备没有发生堵塞、燃烧等事故,减压蒸馏装置正常稳定运行,证实了减压蒸馏法处理TNT红水的安全可靠性.

Treatment of TNT red water by physico-chemical and biological technologies

The combination technology of acidification, micro-electrolysis, coagulating sedimentation, vacuum distillation, immobilized micro-organism and adsorption by activated coke (AC) was used to treat TNT red water generated from Xiangfan Division of 805 Factory. After treatment, the concentration of nitro compounds in effluent was lower than 0.8 mg/L, the average concentration of chemical oxygen demand (COD) was 51.6 mg/L, with the mximum value of 76 mg/L, the chrominance was 20°, and the concentration of aminobenzene was lower than 1 mg/L. The values of these parameters reached the requirement of the factory, which are below the limits proposed by Chinese standard GB14470.1-2002 (Discharge Standard for Water Pollutants from Ordnance Industry: Powder and Explosive). During the period of the pilot scale test, the vacuum distillation apparatus operated stably, and no trouble of blocking and burning happened, meaning that treatment of TNT red water by vacuum distillation was safe and reliable.