46 70 00 Water and Wastewater Residuals Handling and Treatment
46 71 00 Residuals Thickening Equipment
46 71 13 Circular Gravity Thickeners 46 71 16 Gravity Belt Thickeners 46 71 23 Dissolved Air Flotation Thickening Equipment 46 71 33 Rotary Drum Thickening Equipment 46 71 36 Centrifuge Thickening Equipment 46 71 43 Disc Thickeners 46 71 46 Thickening Screw Press 46 71 53 Scum Concentrator Equipment