Carbon Steel Sewage Treatment Equipment Underground Integrated Machine Q235 Q345

Carbon Steel Underground Integrated Equipment

Product Overview

The Carbon Steel Underground Integrated Equipment is a compact and efficient solution for wastewater and reclaimed water treatment. It is installed below ground level, saving surface space and providing a clean, noise-free environment. The equipment integrates multiple treatment processes such as sedimentation, biological treatment, filtration, and disinfection within a sealed structure.
Constructed with high-strength carbon steel and anti-corrosion coatings, it ensures long-term durability and stable operation even under complex underground conditions.

Working Principle

Raw wastewater enters the equipment through the inlet pipe and sequentially passes through different internal chambers such as the sedimentation tank, biological treatment zone, and filtration section.

• Suspended solids are first removed by sedimentation.

• The biological section decomposes organic matter through aerobic or anaerobic reactions.

• The filtration and disinfection stages further purify and sterilize the water.
  The treated effluent meets discharge or reuse standards, while sludge is periodically removed through the sludge discharge outlet.

Main Components

• nlet Chamber: Guides raw wastewater into the system evenly.

• Sedimentation Section: Removes suspended solids through gravity settling.

• Biological Treatment Zone: Performs aerobic or anaerobic treatment to remove organic contaminants.

• Filtration Unit: Further polishes the treated water to improve clarity.

• Disinfection Chamber: Ensures the effluent meets hygienic discharge or reuse standards.

• Sludge Storage and Discharge System: Collects and removes accumulated sludge.

• Ventilation System: Prevents accumulation of harmful gases in the underground chamber.

• Carbon Steel Shell: Fully welded, coated with epoxy or polyurethane for corrosion resistance.

• Access Cover and Maintenance Port: Allow convenient inspection and maintenance.

• Control Cabinet: Integrates electrical control, automation, and monitoring functions.

Features

• Underground installation with minimal surface occupation

• High-strength carbon steel construction with anti-corrosion coating

• Integrated multi-process treatment design (sedimentation, bio, filtration, disinfection)

• Modular and customizable configuration

• Easy maintenance and long lifespan

• Stable operation with low energy consumption

• Suitable for fully automatic or semi-automatic control

Applications

• Municipal domestic sewage treatment

• Residential and office building wastewater systems

• Industrial wastewater pretreatment or reuse

• Hotels, hospitals, and schools wastewater treatment

• Rural or decentralized sewage treatment projects

Optional Configurations

• Air blower and aeration system (for aerobic treatment)

• Automatic sludge discharge valve and pump

• Remote monitoring and data recording system

• Internal UV or ozone disinfection unit

• Activated carbon or multi-media filtration module

• Backup power and overload protection unit

• Anti-corrosion coating upgrade (epoxy, polyurethane, or FRP)

     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.