Improved Water Treatment Systems: Circular Clarifiers

Water Treatment plantWater plays a major role in balancing the earth’s ecosystems. Waterborne germs such as E. coli, cryptosporidium and other pathogens cause contamination in drinking water sources, thus cause various diseases and sicknesses. Water treatment ensures that water is clean for drinking and use by living beings.

Circular clarifiers are reliable water treatment systems for use in industrial and commercial applications. The clarification process majorly deals with the removal of floating material, turbidity and sediment from raw wastewater. The most common wastewater clarifiers are circular and parallel plate mechanical systems.

The circular mechanical clarifiers are readily available in two types: circular peripheral flow and circular center feed.

Circular Center Feed Clarifiers

In the circular center feed, the effluent enters the clarifier through a center well and its flow is in the downward direction. The clarifier thus gives the water ample time to rest, so the solids settle well. The water then rises through a weir in the clarifier’s inner circumference. There exists a skimmer that continually sweeps over the clarifier’s surface to remove any floating solids and remove them through the scum trough. A scrapper arm at the bottom of the clarifier later densifies the settled solids before further processing.

Circular Peripheral Flow Clarifiers

In the circular periphery clarifier, the wastewater flows at the periphery. The distribution of water is even as it spirals through the clarifier annulus by the means of a baffle skirt. This allows solids maximum settling toward the sludge pick-up. A center supported weir allows the water to exit through the center supported weir trough.

Apart from the clarification process, water treatment experts supply other water treatment equipment and use approved water analyzing methods such as jar testing, settling tests, polymer and spectrophotometry are to treat water and make it safe for drinking.