用氨磺酸处理亚硝酸盐废水的研究

利用氨磺酸对含高浓度亚硝酸盐废水的处理进行了研究,讨论了氨磺酸处理亚硝酸盐废水时的条件和影响因素。实验结果表明,用氨磺酸处理含NO-2废水,可在很宽的酸度(0 10%～0 50%H2SO4)或pH值3～9范围内进行,处理前无须对废水的酸碱度进行调节;氨磺酸与NO-2的反应速度很快,不产生污泥和二次污染物;处理工艺简单方便,不需要庞大复杂的处理设备;COD(NO-2)的起始浓度为49 5～1234 8mg/L时,其去除率为42 22%～96 92%,废水处理后COD(NO-2)均小于60mg/L。

RESEARCH OF TREATING NITRITE WASTEWATER USING SULFAMINIC ACID

The present paper, emphasizing on the influencing factors in wastewater treatment under different conditions, introduces the study of the treatment of wastewater with high density of nitrite by using sulfaminic acid. Experiment shows that the treatment works on the NO~-_2 contained wastewater in a relative wide range of acidity (0.1%～0.5% H_2SO_4 or pH3～9) with no need of adjusting pH. The reaction between sulfaminic acid and NO~-_2 is in fast speed without leaving any sludge and secondary pollutants. The treatment is simple in terms of its no need of large and complex equipment. When the amount of COD (NO~-_2) in the wastewater ranging from 49.5 mg/L to 1234.8 mg/L, 42.22%～96.92% of COD (NO~-_2) could be removed, leaving the water with COD (NO~-_2) concentrate below 60 mg/L.