Removing Pollutants from Sewage
{"Image DocumentName": "Removing Pollutants from Sewage", "Image ImageDescription": "Preliminary Treatment: removal of debris and grit; screen out debris and settle the grit; raw sewage flows through a bar screen and debris will be mechanically raked from the screen and taken to an incinerator. After passing through the screen, the water flows through the grit chamber in which the velocity is slowed to permit the grit to settle. Fig A Raw sewage moves from the grit chamber to primary treatment, where sludge is removed and the clarified water then proceeds to secondary treatment (here shown as activated sludge treatment).", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}