我国北方与寒冷的西伯利亚大陆毗邻,全年气温较低。据有关资料介绍,东北、西北和华北的大部份地区每年约有一半时间处于寒冷的冬天(表1)。例如,黑龙江地区冬季最长,持续7个月之久;黄河流域虽然属于温带,但冬季日数也有5个月时间。当我们进行水质处理时,低温水消毒就是经常遇到的情况,也是需要认真研究的问题。 The northern part of our country is bordered by the cold Siberia continent with a low temperature throughout the year. According to relevant information, most parts of northeast, northwest and north China are in cold winter (Table 1) for about half of each year. For example, the longest winter in Heilongjiang region, lasting 7 months; although the Yellow River Basin is temperate, but the winter days are 5 months. When we carry out water treatment, low temperature water disinfection is often encountered, but also need to seriously study the issue.