Peripheral Drive Sludge Scraper

Product Overview

The Peripheral Drive Sludge Scraper is a continuous sludge and scum removal system used in large circular sedimentation tanks.
Driven from the periphery around a central column, the scraper arms rotate slowly to collect sludge from the bottom and skim scum from the surface.
It features reliable performance, low maintenance, and is widely used in municipal and industrial wastewater treatment applications.

Working Principle

The scraper consists of a working bridge, central column, drive unit, scraper arms, and scum removal system.
The drive motor and gearbox rotate the arms around the tank center. The bottom scrapers push settled sludge to the central hopper, while surface skimmers move scum to the scum trough.
Sludge is discharged through a pipe and scum removed by overflow or pumping, ensuring continuous sedimentation and automatic sludge removal.

Main Components

• Central Column: Supports rotating parts; stainless steel or coated carbon steel.

• Bridge: Connects tank periphery and center, carrying the drive assembly.

• Drive Unit: Integrated motor, reducer, and wheel; provides stable transmission.

• Scraper Arm & Blade: Push sludge to the central hopper.

• Scum Scraper: Collects and directs surface scum.

• Sludge Hopper & Pipe: Concentrated sludge discharge outlet.

• Control System: PLC-based control with torque monitoring and protection.

Features

• Simple structure and smooth operation;

• Optional dual-drive for large tanks;

• Automatic torque protection against overload;

• Corrosion-resistant materials for various water conditions;

• Compatible with pumping or sludge discharge systems for full automation.

Applications

• Primary and secondary clarifiers in municipal wastewater plants

• Industrial wastewater sedimentation tanks

• Clarification tanks in water purification plants

• Sedimentation systems in power, chemical, and cooling water facilities

Optional Configurations

• Anti-corrosion coating or stainless steel structure

• Automatic control with PLC

• Scum skimming device

     Jiangsu Sanhe Environmental Protection Group Co., Ltd., formerly Jiangsu Sanhe Environmental Protection Equipment Co., Ltd., is located on the scenic shores of Lake Taihu. It is a renowned manufacturer and developer of modern environmental protection and water treatment equipment in China. It comprises several subsidiaries, including Jiangsu Sanhe Environmental Engineering Co., Ltd. and Yixing Sanhe Environmental Protection Design Institute Co., Ltd. The parent company has a registered capital of 100.2 million yuan, a building area of ​​over 20,000 square meters, and a staff of 52 technicians. The company boasts not only strong environmental protection equipment production and R&D capabilities, but also a highly qualified team with over 30 years of experience in environmental protection equipment production and service, a passion for environmental protection, and a commitment to integrity.

     After nearly 30 years of continuous effort, our innovative development of new products, technologies, materials, and processes, along with our expertise, has been widely adopted in the industry. We have developed advanced continuous-flow activated carbon filters and differential fully automatic backwash filters specifically for reclaimed water reuse and zero-discharge projects. We have also independently developed high-efficiency activated carbon suitable for flow-through activated carbon towers, resolving challenges in China due to poor adsorption performance, short service life, saturation, and high operating costs, hindering widespread adoption and ensuring long-term effective use of activated carbon.

    ​Since its establishment, Jiangsu Sanhe Environmental Protection Group Co., Ltd. has provided qualified products and services to nearly a thousand renowned domestic and international manufacturers, including municipal sewage treatment plants, the machinery and chemical industry, CNPC, Sinopec, Baosteel Group, Jiangxi Copper Group, Dongfeng Nissan, Dongfeng Motor Corporation, commercial passenger vehicle companies, Hangzhou Luxgen, Great Wall Motors, Dongfeng Peugeot Citroen Automobile, Dongfeng Yangzijiang Bus, CSR Corporation, and the Tarim Oilfield, earning a strong reputation. We are grateful to all our friends who have given us opportunities and helped us grow!

     We firmly believe in down-to-earth and steady development; we advocate scientific innovation and unremitting pursuit; and we promote energy-saving, low-carbon, and green living. We provide our customers with ingenious products and services and strive to establish our company as a leading modern enterprise in China's environmental protection production, research, and development sectors.