{keyword Non-Metallic Sludge Scrapers for Corrosive Media | 18-Yr Expertise

Primary sewage treatment is the first major stage of the wastewater purification process, designed to remove materials that will either float or settle by gravity. It typically involves screening to remove large solids, grit removal to eliminate sand and gravel, and sedimentation in a primary clarifier to separate suspended organic and inorganic solids. The clarifier is the centerpiece of this stage, where wastewater is held in a quiescent state for several hours, allowing solids to settle to the bottom. The mechanical system that continuously collects these settled solids is the sludge scraper. The performance of this scraper is the single most important factor in the efficiency of primary treatment. A malfunctioning scraper leads to sludge buildup, reduced effective tank volume, septic conditions, and the overflow of solids into the secondary treatment stage. Huake is a specialist in optimizing primary treatment through its non-metallic sludge scrapers. Engineered from corrosion-resistant composites, these scrapers guarantee uninterrupted operation in the harsh, corrosive environment of raw sewage. They ensure that settled sludge is promptly and efficiently moved to the collection hopper, maximizing the removal of pollutants (typically 50-70% of suspended solids and 25-40% of BOD). This establishes a stable and optimal foundation for the entire subsequent treatment train, making Huake's technology a critical component for effective and reliable primary sewage treatment.