Aging Domestic Wastewater Treatment Systems: A Silent Burden in Urban Areas
In many older apartment buildings, domestic wastewater treatment systems have become outdated or severely degraded. In some cases, buildings are not equipped with dedicated treatment systems at all, and domestic wastewater is discharged directly into the combined drainage system without undergoing any treatment process.
This situation not only causes environmental pollution, unpleasant odors, and the proliferation of insects, but also directly affects residents’ health. More importantly, it poses significant legal risks for building management boards and project owners, particularly in the event of environmental inspections or complaints from residents.
According to Article 86 of the 2020 Law on Environmental Protection, all newly developed urban areas and concentrated residential zones are required to be equipped with separate wastewater collection and treatment systems, independent from stormwater drainage systems. These systems must be properly designed in terms of capacity and technology and approved as part of the environmental documentation.
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Common Issues in Domestic Wastewater Treatment Systems at Apartment Buildings
In practice, domestic wastewater treatment systems in many apartment complexes exhibit numerous shortcomings, including:
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Absence or Non-compliance with Standards
Some buildings lack compliant wastewater treatment systems altogether. Others have installed systems that are damaged, poorly maintained, operated inconsistently, or abandoned without regular maintenance.
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Complex Wastewater Characteristics
Domestic wastewater contains high concentrations of organic matter, grease, pathogenic microorganisms, and nitrogen compounds (such as ammonia and nitrate). Inadequate treatment can result in pipeline blockages and contamination of receiving water bodies.
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Uneven Flow Generation
Wastewater flow typically peaks during morning and evening hours, placing significant hydraulic stress on systems that lack adequate flow equalization tanks.
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Low Treatment Efficiency
Many automated systems are operated without periodic supplementation of microorganisms, leading to reduced treatment efficiency and effluent quality that fails to meet regulatory standards.
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Overloading Beyond Design Capacity
In many projects, actual population density increases significantly after handover, exceeding the original design capacity. Without system upgrades, treatment units become overloaded, causing pollution and increasing the risk of regulatory penalties.
Compliance with QCVN 14:2025/BTNMT – A Mandatory Requirement for Apartment Wastewater Treatment Systems
Effective from September 1, 2025, a new national technical regulation officially comes into force. The National Technical Regulation on Domestic and Municipal Wastewater, officially designated as QCVN 14:2025/BTNMT, establishes updated legal requirements for controlling pollution from residential wastewater sources, particularly in apartment complexes.
This regulation clearly specifies permissible concentration limits for key pollution parameters in treated effluent prior to discharge into receiving waters.
As a result, wastewater treatment systems in apartment buildings must not only operate stably, but also be properly maintained and regularly monitored to ensure long-term treatment efficiency and regulatory compliance.
View details of the National Technical Regulation QCVN 14:2025/BTNMT
In this context, continued use of outdated, non-compliant, or poorly maintained wastewater treatment systems not only degrades the living environment but also exposes building management boards and project owners to serious legal risks.
The Value of Professional Environmental Consulting Services
Rather than attempting unstructured or reactive solutions, engaging a professional environmental consulting firm enables apartment management boards to:
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Assess regulatory compliance: Evaluate existing systems and propose necessary adjustments to meet QCVN 14:2025/BTNMT requirements.
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Optimize treatment technologies: Upgrade or retrofit systems to achieve discharge standards at reasonable costs.
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Support legal and administrative procedures: Complete environmental documentation and minimize the risk of violations and penalties imposed by regulatory authorities.
Cost-effective and Sustainable Long-term Solutions
In addition to system upgrades, outsourcing the operation of domestic wastewater treatment systems to professional service providers is an effective solution for apartment management boards. Compared to maintaining an in-house technical team, this approach offers several advantages:
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Reduced operating costs: Eliminates the need for dedicated technical staff, monitoring equipment investments, and periodic training; costs are managed through service-based contracts.
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Professional expertise and practical experience: Specialized operators employ trained environmental engineers and technicians with extensive experience in system operation and troubleshooting.
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Regulatory compliance assurance: Service providers manage system operation, monitoring records, and environmental reporting in accordance with legal requirements, reducing inspection and penalty risks.
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Minimized technical risks: Continuous monitoring enables early detection and prompt resolution of technical issues, extending equipment lifespan and maintaining stable treatment performance.
For apartment complexes lacking compliant systems or operating with low treatment efficiency, a combined approach of system retrofitting and long-term operation outsourcing provides a comprehensive solution. This ensures compliance with QCVN 14:2025/BTNMT, stable treatment performance, and reduced administrative and personnel burdens.
Investing in the upgrade and professional operation of wastewater treatment systems is not merely a matter of technical compliance or legal obligation—it reflects the responsibility of project owners and management boards toward residents and the surrounding environment.
Now is the right time to reassess existing systems and proactively develop a structured, sustainable, and legally compliant wastewater management plan.
Trusted and Professional Environmental Services in the Mekong Delta
Nano Environment Technology – Construction Limited Liability Company (Nanoen) is a reputable provider of comprehensive environmental services in the Mekong Delta region. Throughout its operations, Nanoen has earned client trust through integrity, dedication, and responsibility in delivering environmental solutions.
With a team of highly experienced professionals, we provide end-to-end environmental services, including environmental consulting and documentation, system design and construction, operation of environmental treatment systems, wastewater treatment operation training, and supply of biological products.
We are committed to delivering optimized solutions that fully meet our clients’ operational and regulatory requirements.
Contact Nanoen today for FREE consultation:
Hotline: 0941 777 519 – 0907 803 678 – 0901 229 798
Nanoen
NANO ENVIRONMENT TECHNOLOGY - CONSTRUCTION LIMITED LIABILITY COMPANY
Address: 661E/29 Vo Van Kiet, Long Tuyen Ward, Can Tho City, Can Tho
Hotline: 0941.777.519 - 0907.803.678 - 0901.229.798
Email: nanoentech@gmail.com
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