4 Dissolved Air Flotation \n\r 8 Wastewater Bar Screen \n\r 1 Chemical Dosing System \n\r 1 Lamella Clarifier \n\r 1 Grit Separator \n\r 1 Continuously \n\r 1 Sequencing Batch Reactors \n\r 2 Sludge Dewatering Equipment \n\r 2 Conveying and pressing equipment \n\r 2 Mud Scraper \n\r