The largest wastewater treatment plants in the world are monumental feats of engineering, processing hundreds of millions of gallons of wastewater daily for megacities. These facilities, such as the Stickney Water Reclamation Plant in Chicago or the Deer Island Treatment Plant in Boston, employ complex and extensive processes to achieve high levels of pollution removal. Reliability is paramount, as any equipment failure can have massive consequences. In the primary treatment stage, which consists of immense sedimentation tanks, the sludge scrapers are among the most critical assets. For a facility of this scale, the choice of equipment must prioritize unparalleled durability and minimal maintenance. Huake's non-metallic sludge scrapers represent the ideal technological solution for these giants. Their corrosion-proof construction eliminates the risk of catastrophic failure and the prohibitively expensive downtime associated with repairing or replacing massive conventional scrapers. The long service life and ultra-low maintenance requirements of Huake's products translate into millions of dollars in operational savings over time for a plant of this size. By ensuring the continuous and efficient operation of the primary sedimentation process, Huake's technology contributes significantly to the stable and cost-effective functioning of the world's largest and most critical wastewater treatment infrastructure.