The invention belongs to the field of
sewage treatment, and discloses a low-
solid-content
sewage cyclone desanding
system and a control method thereof.The low-
solid-content
sewage cyclone desanding
system comprises a pressure
transmitter arranged on a water inlet
pipe; the plurality of hydrocyclones are connected with the water inlet
pipe; the plurality of first valves are arranged on an inlet pipeline of the
cyclone and are associated with the pressure
transmitter; a sand collecting chamber is arranged at a first sand discharging opening of the cyclone; the sand collecting chamber outlet end is provided with a second valve; the sand-water separator is connected with the outlet end of the second valve; the controller is connected with the pressure
transmitter, the first valve, the cyclone, the second valve and the sand-water separator; the hydrocyclones, the first valves, the sand collecting chambers and the second valves are equal in number and are correspondingly arranged on the parallel branches, and the number of the parallel branches is three or more. The
system can automatically regulate and control the operation of the cyclone according to the total water
inlet pressure fluctuation, solves the problems of unstable operation flow state, poor sand removal effect and the like caused by water
inlet flow fluctuation, is suitable for sand removal treatment of sewage with large water inlet fluctuation and low
solid content, and is efficient and stable in operation and good in sand removal effect.