In the Primary treatment for water & wastewater applications, Rectangular Clarifier provides a layout friendly option with minimum dead space between the units as these units can be placed on the common wall. While the basic tank sizing will remain same in various options, the sludge removal arrangement is the key for its operational benefits. We can provide Chain & Scrapper sludge collector system for these Rectangular tanks for widths upto 70' and length upto 200' & longer. These mechanisms can be provided with non-metallic components including Chain, Sprocket and Scrappers which not only ensure easier erection due to reduced weight but also long life. These Scrappers are driven through the chains on both ends of the tank and in-turn carried on the sprocket mounted on the solid steel shafts running across the tank width and supported on the tank walls.

The Rectangular Clarifier can also be provided with Travelling Bridge scrappers where the scrappers are mounted on the bridge which moves on the steel rails along the length on the top of the tank wall. The bridge is driven through a drive which takes the electrical supply through an independently supported festooning cabling system either above the tank wall or along the tank depending upon the site requirement. In the forward movement, the scrapper moves the settled solids towards the discharge section and in the reverse movement of the bridge, the scrapper is lifted up to the water level and it moves the floating scum in the opposite direction for further disposal.