流域下水道 meaning in Chinese

basin sewerage

As a local public enterprise , the bureau of sewerage supports the cycle of water in tokyo in order to maintain a healthy environment and facilitate normal urban activities . the bureau is responsible for public sewerage management including disposal and treatment operations in the ward area . in the tama area , the bureau manages river based sewerage systems by treating sewage emitted by public sewer systems in local municipalities
作为一个地方公营企业，下水道局支撑着东京的水循环，为了保持一个健康的环境，方便正常的都市生活和协调的都市活动，下水道局既负责特别行政区区域的污水排放和处理事务也负责多摩地区的从市町公共下水道流出的污水处理的流域下水道事务。