问题 问答题 简答题

交换器在停运后启动时,为什么会出现短时间出水质量不合格的现象?

答案

参考答案:

离子交换器的交换过程最好连续进行。在停运后的交换器中,由于反离子的存在,会发生交换反应的逆反应,使原已吸着的离子又重新释放出来,从而在每次启动时都会出现短时间的出水质量不合格现象。在生产上必须间断停运时,则在每次启动前应先进行一次正洗,待水质合格后再投入运行。

写作题
假如李雷是你的笔友,根据表格提供的信息,完成下面短文。
Name: Li Lei                            Age:14
Country: Shaoxing, China                  Weather: rainy and humid
Father: policeman                       Mother: doctor
Likes: swimming, basketball, music        
Favorite food: beef and tomato noodles       Favorite star: Jeremy Lin
Appearance: short and straight hair, big eyes, medium height. Wear glasses
Personality: quiet and shy                  Wants: a basketball player
Now: listen to music
    I have a pen pal.                                                         
                                                                          
                                                                          
                                                                          
                                                                          
                                                                          
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