Waste water flows through the main channel to the inflow of the Treatment plant and into a basin for trapping grit and sand. Here a series of coarse and fine rakes remove solids larger than three millimetres. The rakes transfer the material to a container ready for disposal.
Screw pumps then raise the waste water to the level of the treatment plant where it flows under gravity into the grease and sand trap. Heavier solids settle to the bottom while aeration in the basin enables the oil and grease to float to the surface. Pumps pump the solids into the sand washer, while surface skimmers remove the grease and discharge it into the sludge tank at the primary clarifier.
The waste water continues to flow into the two primary clarifiers where, over a period of two hours, solids larger than hundred micrometres settle on the bottom forming a layer of sediment known as primary sludge. Bridge scrapers scrape this sludge in to the thickener. From here, it goes to the sludge tank and from there to the digesters.
Za več informacij kliknite Tehnološki podatki