Waste Water Treatment › Wastewater Treatment Equipments
The basic principle of wastewater treatment systems in general is to bring together the pollutant loads, to precipitate or float them using density difference, and then to physically separate them from the water. These steps are applied in many areas of the treatment system and scrapers are used for this process. The DAF System is indispensable for sludge settling and thickening tanks and sand and oil separation processes.
Although there are many types, it is roughly divided into two groups as rotary separators and linear scrapers:
Circular Scrapers: They are used in sludge settling and thickening tanks where the scraper tank is circular. Its capacity is determined depending on the pool diameter, design and sludge load. These scraper types can be equal in length to the radius of a tank or its entire. It helps to remove the sludge settled at the bottom by scraping it away from the environment.
Linear Scrapers: This type of separators are used in rectangular type tanks. It progresses by scraping from one side of the rectangular pool to the other. It moves from the bottom in sand traps, from the surface in oil traps and DAF systems. Settled sand is scraped from the bottom, floating foam and oils are removed from the surface. When the process is over, the scraper returns to the beginning.