Drainage system for repair of sewage pipes

摘要

The present invention relates to a drainage device for a repair work on a sewage pipe, which allows wastewater to be ascended in a smoother manner, and minimizes noise and stench. To this end, a lower side of a wastewater discharge pipe is inserted into a sewage pipe, and an upper side of the wastewater discharge pipe is installed after being ejected to the outside of a manhole.