Subsurface Wastewater Treatment System: Structure, Benefits, and Operation Notes

What is an Underground Wastewater Treatment Tank?

An underground wastewater treatment tank is a system designed to collect, treat, and remove pollutants from wastewater. It then discharges the treated water to an external receiving source without causing harm to the environment.

An underground wastewater tank is used in the wastewater treatment process. This system is applied in industrial areas, residential areas, and construction sites where there is no public wastewater treatment system.

Structure and Operation Mechanism of the Tank

Structure

• The underground wastewater tank consists of two main components: the treatment tank and the holding tank.
• The treatment tank removes pollutants present in the wastewater such as harmful organic substances, microorganisms, through natural biological processes.
• The holding tank temporarily stores and regulates the wastewater before additional treatment or discharge into the environment.

Operation Mechanism

• Sewage and industrial wastewater are conveyed through pipes to the treatment tank.
• Here, the wastewater is treated to remove pollutants, harmful substances, impurities, microorganisms. This process occurs through the biological decomposition of microorganisms, organic matter in the wastewater.
• The treatment tank contains different compartments for specialized treatment stages to facilitate the decomposition of organic matter by microorganisms.
• After treatment, some pollutants are removed. The treated wastewater is then directed to the holding tank. The holding tank stores, stabilizes, and regulates the flow and concentration of wastewater. Additionally, it removes any remaining pollutants in the wastewater, especially sludge and suspended solids.
• The treated wastewater can then meet the required standards and be discharged into the environment.

Benefits of Underground Wastewater Treatment Tanks

Some benefits to consider when deciding whether to install an underground wastewater treatment tank:

• Reducing environmental pollution by removing harmful components from wastewater. This ensures that when discharged into the natural environment, it will not harm the soil and water.
• Space-saving and construction area utilization: Since this is an underground structure, the above-ground space can be utilized for planting, parking lots, etc.
• High applicability: Suitable for areas without public wastewater treatment systems. Particularly in remote residential areas, separate industrial zones, temporary construction sites, etc.
• Comprehensive wastewater treatment efficiency, capable of removing simple domestic and industrial wastewater.
• Integrated equipment with simple construction and operation processes.
• Automated machinery and equipment systems. Additionally, the setup can be placed on a corner of the ground for easy maintenance.
• Advanced, modern biological technology with minimal sludge generation.
• No noise generation, can operate continuously for 10 years or more with up to 80% efficiency in BOD and COD treatment.

Considerations for Building and Operating an Underground Wastewater Treatment Tank

• Requires expertise and careful management to achieve high efficiency and meet environmental standards.
• Regular cleaning, maintenance is essential for stable system operation.

Above are some information about underground wastewater treatment tanks. We hope these insights have helped you understand more about this structure and consider choosing an appropriate treatment system. If you have any questions, feel free to contact us for further advice from environmental experts.