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医院污水是一种含有病毒及致病菌的污水,因而排放前必须消毒处理。当采用液氯、次氯酸钠等液剂消毒时,需要某些定比投加设备,目前使用的有泵后加药和双虹吸加药。双虹吸系统不需设置污水泵,且不存在管路腐蚀问题因而得以广泛采用。双虹吸加药系统按污水虹吸方式可分为U形管虹吸和钟罩虹吸。U形管虹吸使用较早,但存在虹吸形成不及时等问题。钟罩虹
Hospital sewage is a kind of sewage that contains viruses and pathogenic bacteria and must be disinfected before it is discharged. When the liquid chlorine, sodium hypochlorite and other liquids are used for disinfection, some fixed-ratio dosing equipments are needed. Currently, there are pump dosing and double-siphon dosing. The double siphon system does not require a sewage pump, and there is no problem of pipeline corrosion and it can be widely used. Double siphon medicine system can be divided into U-shaped tube siphon and bell siphon according to sewage siphoning method. U-tube siphoning is used earlier, but there are problems such as siphon formation is not timely. Bell jar