43results about How to "Reduce total phosphorus" patented technology

The invention relates to a petrochemical RO concentrated brine treatment system and a method thereof. The system comprises a first high-efficiency precipitation unit, an ozone catalytic oxidation unit, a blowing-off unit, a denitrification unit, an MBBR aerobic unit and a second high-efficiency precipitation unit which are sequentially communicated along the flow direction of concentrated brine, the first high-efficiency precipitation unit is used for removing hard and suspended substances, and the second high-efficiency precipitation unit is used for removing phosphorus and substances, the first high-efficiency precipitation unit is connected with a water inlet pipe, the second high-efficiency precipitation unit is connected with a first water outlet pipe, and the blowing-off unit comprises a blowing-off tank, wherein a blowing-off piece for introducing nitrogen into the concentrated brine in the blowing-off tank is arranged in the blowing-off tank; the treatment method comprises: hard substance removal, coagulation, flocculation, precipitation separation, ozone oxidation, nitrogen stripping, MBBR treatment and phosphorus removal and precipitation. The petrochemical RO concentrated brine treatment system has the advantages that the RO concentrated brine can be treated, COD, total phosphorus, hardness, alkalinity and total nitrogen in the RO concentrated brine are reduced, so that the RO concentrated brine can be discharged up to standard, especially nitrate nitrogen in the concentrated brine can be obviously reduced, and the total nitrogen in the discharged concentrated brine is less than or equal to 10 mg/L.