There is a revolving rake to scrape settled grit to a sump for removal. The heavy material settles to the bottom and is then dragged upwards by means of a rake, and then discharged. A rake is a device used in thickeners and settlers to move the settled solids toward the place where they leave the vessel.
The average costs of deep cleaning is between $100-to-$400 per quadrant. This means that if you are getting all four areas scaled and planed, it can cost you as little as $400 or as much as $1,600. About how much you will pay depends on where you live.
1 Cosmetic dental bonding averages anywhere $400 -$700 per tooth. 2  It can also be lower than $250 but can also be as expensive as much as $1,000 depending on the treatment needs. 3  If the tooth with the gap needs crowns, the cost can run $400 -$3,500 per tooth depending on materials.