50 – 5000 M3/H Circular Sedimentation Tank Wastewater Treatment Final Settling Tank

Sedimentation Tank

Product Overview

The Sedimentation Tank is a crucial unit in water and wastewater treatment systems. It removes suspended solids from raw water through gravity settling, allowing heavier particles to accumulate at the bottom while clarified water flows out from the top. This process effectively reduces the load on downstream filtration and biological treatment units, ensuring stable and efficient system operation.

Working Principle

Water enters the sedimentation tank through the inlet distribution system and flows slowly across the tank. Under the action of gravity, suspended solids settle to the bottom, forming a sludge layer. The clarified water at the upper part flows out through the overflow weir. The settled sludge is periodically removed by a mechanical scraper or suction system to maintain continuous operation.

Main Components

• Inlet Distribution System: Ensures uniform flow of water entering the tank and prevents short-circuiting.

• Sedimentation Zone: The main area where solid-liquid separation occurs under gravity.

• Sludge Hopper / Sludge Collection Zone: Located at the bottom to collect and store settled sludge.

• Sludge Scraper or Suction Device: Mechanically removes accumulated sludge for discharge.

• Effluent Weir: Uniformly collects clarified water and maintains stable water levels.

• Drive Unit (Central or Peripheral): Provides the motion for the scraper or suction mechanism.

• Tank Body: Made of reinforced concrete, stainless steel, or anti-corrosion coated carbon steel.

• Walkway and Handrail: Provide safe access for operation and maintenance.

• Control System (Optional): Monitors and automates sludge discharge and flow control.

Features

• High-efficiency solid-liquid separation

• Stable and uniform hydraulic conditions

• Strong corrosion-resistant structure

• Flexible design for different capacities and sites

• Optional automatic sludge discharge and control system

• Easy installation and low maintenance

• Long service life and reliable operation

Applications

• Municipal sewage treatment plants

• Industrial wastewater treatment facilities

• Drinking water purification systems

• River and lake sedimentation projects

• Reclaimed water and recycling systems

Optional Configurations

• Mechanical sludge scraper or suction type sludge collector

• Automatic sludge discharge valve and control system

• Inlet flow distribution weir and outlet overflow weir

• Anti-corrosion coating (epoxy / FRP)

• Access walkway and handrail system

• Online turbidity and flow monitoring unit

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.