Carbon Steel Underground Sewage Treatment Equipment with Epoxy Coating and Automatic Control for Efficient Wastewater Treatment

The Carbon Steel Underground Integrated Equipment is a compact and efficient solution for wastewater and reclaimed water treatment. Installed below ground level, it saves surface space while providing a clean, noise-free environment. The equipment integrates multiple treatment processes including sedimentation, biological treatment, filtration, and disinfection within a sealed structure.

Constructed with high-strength carbon steel and anti-corrosion coatings, this equipment ensures long-term durability and stable operation even under complex underground conditions.

Raw wastewater enters the equipment through the inlet pipe and sequentially passes through different internal chambers including 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.

• Inlet 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

• 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

• 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

• 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)