Building construction process domestic sewage treatment ground filtering device and filtering method

The invention relates to a building construction process domestic sewage treatment ground filtering device and a filtering method. The device comprises a filtering pipe, a water inlet pipe is arranged at one end of the filtering pipe, a water outlet pipe is arranged at the other end of the filtering pipe, and four filtering layers are arranged in the filtering pipe and are sequentially gravel, ceramsite, fine sand and sponge from one end of the water inlet pipe to one end of the water outlet pipe. Domestic sewage primarily treated by a septic tank is secondarily filtered by the four filtering layers including the gravel, the ceramsite, the fine sand and the sponge, water quality is further improved to meet secondary pollution exhaust criteria, and produced sewage in the whole engineering construction period is controlled, so that surrounding environments are protected. 本发明涉及种建筑施工过程生活污水处理地面过滤装置及过滤方法，包括过滤管，该过滤管端设有进水管，另端设有出水管，该过滤管中设有四层过滤层，该四层过滤层从设有进水管端到设有出水管端依次为碎石、陶粒、细沙和海绵。本发明通过碎石、陶粒、细沙和海绵四层过滤层对经过化粪池初级处理的生活污水的污水