Design, Supply, Transportation, Construction, Installation, Testing, And Commissioning Of A 1.75 Mld Capacity Sewage Treatment Plant At Silapathar Municipality On A Design, Build, And Operate Basis In Up-Flow Anaerobic Sludge Blanket Design, Supply, Transportation, Construction, Installation, Testing, And Commissioning Of A 1.75 Mld Capacity Sewage Treatment Plant At Silapathar Municipality As Well As Operation And Maintenance Of The Complete System For A Period Of Five Years