General 1 Method of Grit Transfer () (P/S) Solids handling pump unit Air lift pump Ram pump unit 6.2.3 Non-Powered Vortex Separators (If Required/Provided) 6.2.3.1 General 1b Grit Backwashing System Required/Provided (Y/N) (P/S) 2 Equipment Designation or Model No. (S) 3 Separator Configuration () (P/S) Free-standing Installed in a wet well 6.2.3.2 Grit Separator 1 Separator Material(s) (P/S) 6.2.3.3 Grit Backwashing System (If Required/Provided) 1 Type of Backwashing System Required/Provided (P) Water/Air Water Backwashing Systems (If Required/Provided) 1 Washwater Availability/ Requirements (P/S) Pressure and Flow Rate Supply Pressure (bar) Flow rate (l/min) Type () Final effluent Screened effluent Potable water Filtration Level (Microns) 2 Valve Type () (P/S) Full bore, ¼ turn, actuated* Solenoid 6.2.3.4 Grit Transfer General 1 Method of Grit Transfer () (P/S) Solids handling pump unit Air lift pump Ram pump unit 6.3 Grit Transfer Equipment 6.3.1 Solids Handling Pump Units (If Required/Provided) 6.3.1.1 General 1 Equipment Designation or Model No. (S) 2 Maximum Operating Speed (rpm) Allowable (1500*) (P) Design (S) 6.3.1.2 Orientation and Support Structure 1 Orientation () (P/S) Horizontal Vertical 2 Support Structure Material (S) 6.3.1.3 Casing 2 Casing Material (P/S) 5 Flange Type (PN 16*) (P/S) 6 Casing Wear Rings (P/S) Required/Provided (Y/N) 6 Fixing Method (P/S) 6 Material(s) (P/S) 6.3.1.4 Impeller 1 Impeller Type () (P/S) Closed Semi-open Open Vortex Spiral vane Other (specify)
2 Impeller Dimensions (mm) (S) Diameter fitted Min. diameter Max. diameter 3 Impeller Material (P/S) 4 Method of Securing Impeller to Pump Shaft () (P/S) Key Bolt Conical taper Other (specify) 6 Impeller Wear Rings (P/S) Required/Provided (Y/N) 6 Fixing Method (P/S) 6 Material(s) (P/S) 6.3.1.5 Shaft 1 Shaft Material (S) 6.3.1.6 Seals 1 Seal Type (P/S) 1 Seal Manufacturer (P/S) 2 Seal Flushing/Cooling Required/Provided (Y/N) (P/S) 2 Flushing Water Availability/ Requirements (P/S) Pressure and Flow Rate Supply Pressure (bar) Flow rate (l/min) Type () Final effluent Screened effluent Potable water Filtration Level (Microns) 6.3.1.7 Shaft Coupling (If Required/Provided) 1 Coupling Type (Spacer for Mechanical Seals*) (S) 1 Coupling Manufacturer (S) 2 Component Materials (S) Hub Spacer Flexible component Guard 6.3.2 Air-Lift Pumps (If Required/Provided) 6.3.2.1 General 1 Equipment Designation or Model No. (S) 6.3.2.3 Air Wash/Air Lift Pipework 1 Type of Valve () (P/S) Full Bore, actuated Solenoid 1 Mode of Operation of Valve () (P/S) Manual Auto 6.4 Grit Treatment Equipment 6.4.1 Screw Classifiers (If Required/Provided) 6.4.1.1 General 1 Configuration (Standalone with Pumped Feed*) (P) 2 Material(s) (P/S) 3 Equipment Designation or Model No. (S) 6.4.1.2 Grit Settlement Tank 1 Flange Type (PN 16*) (P/S) 4 Odour Control Connection Required (Y/N) (P) 6.4.1.3 Screw Conveyor 2 Type of Conveyor () (P/S) Shafted screw Shaftless spiral 3 Screw/Spiral Material (P/S) 3 Trough/Tube Material (P/S)
Filtration Level (Microns) 3 Valve Type () (P/S) Full bore, ¼ turn, actuated* Solenoid 6.4.3.5 Screw Conveyor 2 Type of Conveyor () (P/S) Shafted screw Shaftless spiral 3 Screw/Spiral Material (P/S) 3 Trough/Tube Material (P/S) 4 Wear Plates/Liner (Shaftless Spirals) Required/Provided (Y/N) (P/S) 4 Material (P/S) 5 Method of Facilitating Bearing Maintenance () (P/S) Pivot mechanism for screw Maintenance possible without disturbing screw 6.5 Package Grit Plant 6.5.1 General 1d Grit Pump Required/ Provided (P/S) 6.5.2 Tank 1 Tank Material () (P/S) Stainless steel number 1.4307* (AISI 304L) Stainless steel number 1.4404 (AISI 316L) Other (specify) 4 Flange Type (PN 16*) (P/S) 6.5.3 Horizontal Screw Conveyor 2 Type of Conveyor () (P/S) Shafted screw Shaftless spiral 3 Screw/Spiral Material (P/S) 3 Trough/Tube Material (P/S) 4 Wear Plates/Liner (Shaftless Spirals) Required/Provided (Y/N) (P/S) 4 Material (P/S) 6.5.4 Air Sparge System 3 Type of Valve () (P/S) Full Bore, actuated Solenoid 3 Mode of Operation of Valve () (P/S) Manual Auto 6.5.5 Inclined Screw Conveyor 6.5.5.1 General 2 Type of Conveyor () (P/S) Shafted screw Shaftless spiral 3 Screw/Spiral Material (P/S) 3 Trough/Tube Material (P/S) 4 Wear Plates/Liner (Shaftless Spirals) Required/Provided (Y/N) (P/S) 4 Material (P/S) 6.5.5.2 Organics Return System (If Specified/Supplied) 2 Washwater Availability/ Requirements (P/S) Pressure and Flow Rate Supply Pressure (bar) Flow rate (l/min) Type () Final effluent Screened effluent Potable water Filtration Level (Microns) 3 Spray Bar/Nozzle Material(s) (P/S)