Peripheral Drive Sludge Scraper | ZBGX Scraper and Suction Machine | Clarifier Sludge Collector

Working Principle

The equipment relies on the friction between the peripheral drive wheels and the track to move the bridge in a slow circular motion around the center support. As it rotates, the bottom scraper blades push the settled sludge down the sloped floor toward the central hopper. Meanwhile, suction pipes connected below the bridge use negative pressure to draw the thickened sludge out of the tank. This synchronized scraping and suction design prevents anaerobic fermentation caused by sludge sitting too long.

Application Fields

1.Large circular settling tanks: efficiently handling bottom sludge in primary or secondary clarifiers.
2.Water treatment plant clarifiers: clearing and discharging accumulated sludge to ensure effluent turbidity.
3.Steel and metallurgical wastewater: handling heavy sludge at the bottom of large radial settling tanks.
4.Paper and chemical wastewater: sludge collection and discharge in physical-chemical settling tanks.

FAQ

Q1: Can a peripheral drive sludge scraper operate in a freezing tank during winter?
A: Yes, but special measures are needed. If the tank surface freezes, resistance on the scraper increases dramatically. In northern regions, de-icing pipes or thawing devices are usually installed along the tank edge. Meanwhile, the equipment's overload protection prevents the motor from burning out when ice resistance is too high.

Q2: What happens if the sludge at the bottom is too thick for the equipment to push?
A: This Peripheral Drive Sludge Scraper is equipped with a torque limiter or overload alarm. When thick sludge causes abnormal resistance on the scraper, the system will automatically shut down and alarm. In daily operation, simply control the sludge discharge cycle to prevent excessive accumulation at the bottom.

Q3: Can this equipment also handle scum removal?
A: Yes. Scum baffles are usually installed on the bridge alongside the sludge scrapers. The bottom scraper pushes the sludge toward the center, while the surface scum baffle pushes floating scum toward the discharge hopper at the edge. Both operate simultaneously to improve the overall effluent quality of the clarifier.