Swirl Aerated Grit Removal System

Product Overview

The Vortex Grit Removal System is a highly efficient unit combining hydraulic vortex and aeration agitation to separate heavy inorganic particles (sand, grit, gravel) from wastewater while minimizing organic matter carryover.
A controlled vortex flow field allows grit to settle by centrifugal force, and the collected grit is removed via airlift or screw conveyor. It is widely used in municipal and industrial wastewater treatment plants.

Working Principle

As wastewater enters the chamber, it is induced into a tangential vortex motion by the flow guide and aeration system.
Under centrifugal and gravitational forces, grit settles to the bottom, while lighter organics are carried away.
Collected grit is discharged automatically via airlift or screw conveyor.
Continuous aeration prevents anaerobic conditions and odor formation.

Main Components

• Vortex Tank: Reinforced concrete or stainless steel tank for stable flow.

• Flow Guide Cylinder: Regulates velocity distribution and enhances vortex strength.

• Aeration System: Includes blower, air piping, and diffusers for rotational flow.

• Grit Hopper & Discharge: Collects and removes grit via airlift or screw conveyor.

• Control System: PLC automation with interlocking functions.

Features

• Efficient removal of inorganic particles ≥0.15 mm;

• Uniform flow with high grit removal efficiency and low organic content;

• Aeration prevents odor and sediment buildup;

• Fully automated operation with minimal maintenance;

• Compact structure with stable performance;

• Corrosion-resistant construction for long service life.

Applications

• Municipal wastewater grit removal after bar screen;

• Industrial wastewater pretreatment (food, chemical, paper, etc.);

• Pump stations and combined sewer overflow grit removal;

• Water intake pretreatment in water plants.

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     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.