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.
'+' + (voteCount + 1) : (voteCount + 1) }}. Depending on the area you live and on the reputation of the surgeon you go to, the prices for a cheek and neck lift will vary widely. For high quality surgery you could spend between $8,000 and $25,000. Don't base your final decision on whom to go to on price alone.