Wastewater diffuser pre-mixing method and a strong pre-mixing wastewater diffuser, including: sewage inlet pipe, annular pressure water chamber, shrinkage pipe section, diameter throat pipe section, diffuser pipe section, the above parts are coaxial circulation pipes; including : The suction bell mouth and the suction main pipe section connected to it, the inner sleeve suction main pipe section is placed in the outer sleeve water inlet chamber and coaxial with it, forming the inner and outer walls of the annular sewage inlet chamber; The suction bell mouth is placed outside the outer sleeve, and the end of the contraction pipe section of the outer sleeve and the end of the suction main pipe section constitute a jet nozzle.
The invention utilizes the pressure when the waste water is discharged to eject in the form of a hollow rotating or non-rotating water jet, creating a negative pressure in its hollow part, and the environmental water is sucked into the negative pressure belt, and the jet entraps the environmental water, which is pre-blended in the diffuser Mixing greatly reduces the concentration or temperature of wastewater, and then discharges it from the outlet of the diffuser. It can greatly reduce the area of its sewage mixing zone and meet environmental requirements.