The inclined tube sedimentation equipment is a kind of sedimentation tank designed according to the shallow tank sedimentation theory. The inclined tube sedimentation equipment sets many dense inclined tubes or inclined plates in the sedimentation area to make the suspended impurities in the water precipitate in the inclined tubes or inclined plates. The water flows upward along the inclined plates or inclined pipes, and the separated sludge slides downward along the inclined plates to the bottom of the tank under the action of gravity, and then is discharged centrally. This kind of tank can improve the sedimentation efficiency and increase the treatment capacity by 3-5 times in the same area. According to the experimental data of wastewater, the inclined tube precipitator with different flow rate can be designed, and flocculant is usually added when it is used. The inclined pipe sedimentation water purification method is to install a inclined pipe with an inclination of 60 degrees above the sludge suspension layer, so that the suspended solids in raw water or floc alum formed after adding coagulant gather to form a thin mud layer on the bottom surface of the inclined pipe, slide back to the sludge suspension layer by gravity, and then sink into the sludge hopper. The sludge is discharged into the sludge tank by the sludge discharge pipe for further treatment or comprehensive utilization. The supernatant gradually rises to the water collecting pipe and can be directly discharged or reused.