Sand water separation system and cyclone separator

Abstract

The present application provides a sand-water separation system and a cyclone separator, wherein the cyclone separator comprises a cyclone cavity and a cyclone separation overflow pipe, a screening device is used for screening out coarse sand in the sand and conveying to a sand-water mixing device; a preliminary separation device is used for conveying the separated sand to the screening device and conveying the separated sewage to a booster sewage pump; the booster sewage pump can input the sewage into the cyclone cavity and make the sewage generate cyclone in the cyclone cavity, the cyclone separated sewage is discharged through the cyclone separation overflow pipe and conveyed to a sewage treatment system; the outlet of the sand-water mixing device is connected with a sand-water slurry pipe, the sand-water mixing device can mix the coarse sand with clean water conveyed by a clean water outlet pipe, and make the mixed sand-water slurry conveyed to a sand-water ejector through the sand-water slurry pipe, thereby solving the technical problem that the effective action of the sand-water slurry recycling process gradually decreases in the slurry phosphorus removal.

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