而以往这些药品的投加，主要靠人工或简单的加药设备来实现。
Before now, the adding drugs, in the main, by manual or simple equipments to complete.
地表水处理厂通常提供添加2-3种除味除臭的加药设备，所以操作人员可以选择最有效的药剂。
In surface-water treatment plants equipment for feeding two or three taste- and odor-removal chemicals is usually provided, so the operator can select the most effective chemicals.
结合工程实例，阐述了自动控制加药设备、自动控制真空加氯设备、智能化监测换热设备的组成和工作原理，并根据使用状况分别作出效果评价。
The composition and working mechanisms of automatic chemical addition equipment, automatic vacuum chlorine addition device and smart monitoring equipment are described through a case study.
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