摘要
在弱碱性条件下,二氧化氯消毒剂将氰化物氧化成无毒的氰酸盐(OCN)、二氧化碳和氮气。研究了影响二氧化氯销毁氰化物的几种因素:pH在8—11的范围内,不影响二氧化氯对氰化物的销毁率;在所试验的反应温度(0-40℃)内,温度对反应速率表现出有限的影响;二氧化氯与氰离子的最佳质量比为2:1;当氰离子最高使用浓度小于0.5g/L时,废水中氰离子浓度达一级以上的排放标准。
Under the condition of weak base, chlorine dioxide can oxidize cyanide into no poisonous cyanate (OCN-), carbon dioxide and nitrogen. Effects of several factors on destroying cyanide were discussed : pH does not influence the destruction rate over the range of 8 - 11. Temperature has limited influence on the reaction speed in the range of 0 -40 ℃. When the optimum mass ratio of chlorine dioxide to cyanide ion is 2: 1, and the highest concentration of cyanide ion is smaller than 0.5 g/L, the concentration of cyanide ion in wastewater can meet the discharge standard.
出处
《环境污染治理技术与设备》
CSCD
北大核心
2006年第2期134-136,共3页
Techniques and Equipment for Environmental Pollution Control
关键词
氰化物
二氧化氯
销毁
cyanide
chlorine dioxide
destruction