Domestic sewage collecting device for tug

The utility model discloses a domestic sewage collection device for tugs. The domestic sewage collection device comprises a sewage collection assembly and a sewage treatment assembly which are connected through a pipeline, the sewage collection assembly comprises a sewage collection cabinet and a sewage discharge assembly; the sewage discharge assembly comprises a first pipeline and a side discharge pipe; a first stop valve, a discharge pump and a second stop valve are sequentially arranged on the first pipeline; one end of the first pipeline is connected with the lower side of the sewage collecting cabinet, and the other end of the first pipeline is connected with a side discharging pipe. According to the utility model, the domestic sewage can be discharged into the treated domestic sewage cabinet when the tug stops, and the treated sewage in the domestic sewage cabinet can be discharged into the sea through the sewage discharge pump during sailing operation; meanwhile, the device provided by the utility mod