Grit shall be discharged from the grit trap into a grit washing system and classifier. Fromthe grit washer the grit shall be transferred to the associated grit hopper. The grit slurrytransfer pipework shall include swept bends and tees, and to eliminate, or minimise,fittings to prevent blockages due to the nature of the slurry being pumped. Short orstandard radius bends shall not be used.The grit removal system shall be designed in accordance with General Specification G4.19Grit Removal System.Shaftless screw conveyors shall be provided for screenings and grit transfer except whereshafted conveyors are used for the grit classifiers. Conveyors shall be designed inaccordance with General Specification G4.6 Conveyors.LPHW shall be used as process and wash water for all processes.Provision shall be made for foul air extraction from all equipment and connection to anodour control facility. Design of odour containment shall be in accordance with theGeneral Specifications.The basis of design for the GWRF screening and grit system shall be in accordance withTable P4-24.