The invention discloses a variable-speed up-flow
hydrolysis acidification reactor, which comprises a tank body. A central shaft is arranged at the center of the tank body, and the bottom of the central shaft is connected to a
sewage inlet
pipe and a tank
bottom water distribution
pipe. The top of the tank body is provided with a water
distributor, the bottom of which is communicated with the central shaft. The water
distributor is also connected with a
reflux main
pipe, the other end of which is connected to a multi-point water absorption
reflux device located in the tank body. The
reflux mainpipe is equipped with a flowmeter; a reflux pump is installed inside the reflux main pipe; water distribution ports are arranged on the tank
bottom water distribution pipe; the
tail end of each waterdistribution port is provided with a variable
diameter plug; the top of the tank body is provided with an
effluent catch basin; a
sludge drain pipe is installed above the tank
bottom water distribution pipe; and the
sludge drain pipe is connected to a
sludge pump outside the tank body. According to the invention, loss of
activated sludge can be prevented, concentration of the
effluent suspended substances is reduced, no mechanical stirring is needed, there is no
power consumption, energy is saved and the environment is protected, water distribution is uniform, the water distribution pipelinesystem is prevented from being blocked, and the
impact resistance is strong.