污水处理厂工人会面临多种可见的危险因素,如溺亡、跌倒、封闭的空间,不知不觉中暴露在通电设备、危险化学品或有毒气体中等等。除此之外还有很多肉眼所察觉不到的危险。比如对于有可能接触到人类排泄物的人员来说,与细菌、病毒和寄生虫相关的疾病就对他们造成了持久的威胁。为了此类预防疾病,污水处理工人穿戴个人防护设备、勤洗手和接种甲肝和破伤风疫苗成了一贯的措施。 Sewage treatment plant workers face a wide range of visible risk factors such as drowning, falls, confined spaces, unknowingly exposure to energized equipment, hazardous chemicals or toxic gases. In addition there are many dangers unnoticed by the naked eye. For example, people, who have exposure to human excrement, are endangering diseases caused by bacteria, viruses and parasites. For such prevention of illnesses, it has been the consistent practice for sewer workers to wear personal protective equipment, wash their hands and vaccinate against hepatitis A and tetanus.