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    OSMOTIC TREATMENT INDUSTRY

    Application of SURO membrane system in a solid waste disposal site

    Project introduction

    The landfill leachate treatment plant adopts the international advanced combined process of "external MBR (two-stage biological denitrification) + two-stage nanofiltration/reverse osmosis". The treatment scale is 500m3 /d, and the treated effluent meets the national emission standard. The project adopted SURO NF30-8040 membrane elmemnt and replaced the original imported nanofiltration membrane products. Since its installation and operation in June 2018, the nanofiltration membrane system has maintained a good CODcr removal rate while operating at a lower energy consumption.


    The process flow

    The process flow of on-site waste osmotic treatment is shown in the figure below.



    Apply product and membrane component parameters

    Model Output/Set Membrane Flux Recovery Rate System Rejection(%) Operating Pressure 
    SURO NF30-8040500m3/d18.0LMH85%>92%0.6MPa



    Nanofiltration membrane water production standard discharge

    After landfill leachate is treated, it meets table 3 of Domestic Garbage Landfill Pollution Control Standards (GB16889-2008) (Some pollutants)

    No. Foulants Permeate Concentration No. Foulants Permeate Concentration 
    1chrominance (dilution multiple)304SS(mg/L)30
    2CODcr(mg/L)605TN(mg/L)20
    1BOD5(mg/L)206NH3-N(mg/L)8


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