Medical wastewater treatment

15/03/2025

Medical Wastewater Requires Specialized and Tailored Treatment Systems

Nanoen – Medical wastewater is a special type of wastewater due to its specific characteristics, which include high concentrations of bacteria, chemicals, heavy metals, and other contaminants. This requires a specialized and appropriate wastewater treatment system.

1. Introduction to Medical Wastewater

Medical wastewater originates from hospitals, clinics, preventive healthcare units, medical research and training institutions, and pharmaceutical production facilities. The receiving sources may include surface water bodies, coastal waters, or sewer systems.

In addition to common pollutants like organic matter and grease, medical wastewater also contains pathogenic microorganisms, pharmaceutical residues, disinfectants, solvents, antibiotics, and even radioactive isotopes. Therefore, it must be strictly collected and treated in accordance with current regulations.

2. Criteria for Selecting Medical Wastewater Treatment Technologies

Wastewater flow rate is a key factor in determining appropriate treatment technology.
Investor’s requirements: The system must meet the practical needs of the clinic.
Regulatory compliance: Depending on the receiving source, the effluent must comply with relevant technical regulations on medical wastewater.

Note: As of September 1, 2025, QCVN 28:2010/BTNMT will be replaced by QCVN 40:2025/BTNMT. This new regulation will impose stricter limits on pollutant parameters.

Clinics under planning should design their treatment systems in line with the new standards.

Existing clinics should proactively plan for system upgrades to ensure future compliance.

Wastewater characteristics: Analyze pollutants such as SS, BOD, COD, N, P, coliforms, Shigella, Vibrio cholerae, etc.
Site conditions: Evaluate the space and location for system installation.
Technology efficiency: Compare the pros and cons of different treatment methods.
Proven experience: Apply solutions that have been validated through real-world implementation.

✅ Choosing the right technology helps optimize costs, simplify operation, and ensure effluent meets environmental standards.

3. Medical Wastewater Treatment Process

For small and medium-sized clinics (e.g., dental, traditional medicine, general practice):

Wastewater in these facilities mainly originates from blood, body fluids, equipment cleaning, and handwashing during treatment procedures. It contains a mix of easily and poorly biodegradable organic matter, pathogens, disinfectants, and detergents.

Most clinics currently use a combination of physico-chemical treatment and filtration, including:

Ozone treatment: For disinfection, odor removal, heavy metal reduction, and water clarity.
Multimedia filtration system: Includes sand and activated carbon filters to remove suspended solids, organic matter, and metals.
Two-step disinfection: Wastewater is exposed to ozone twice for enhanced pathogen and odor removal before discharge.

This solution allows easy operation and ensures that effluent meets discharge standards.

Công nghệ xử lý nước thải y tế cho phòng khám nhỏ (Ảnh từ công trình thực tế)

Actual image of a medical wastewater treatment system module installed by Nanoen

For large clinics and hospitals:

Larger facilities generate greater volumes of medical wastewater and more complex pollutants, including wastewater from testing, surgery, sterilization, laundry, and domestic wastewater from staff and patients.

The treatment system must integrate advanced technologies for optimal performance, including:

Biological treatment (anoxic–aerobic): Microorganisms break down organic matter, reducing BOD and COD.
Coagulation–flocculation: For removing suspended solids, heavy metals, and persistent pollutants.
Ozone and UV treatment: Disinfection, deodorization, and removal of viruses and bacteria.
MBR membranes and settling tanks: To improve treated water quality and meet strict discharge standards.

These technologies ensure stringent control, helping hospitals maintain compliance with environmental regulations.

Trusted & Professional Environmental Services in the Mekong Delta

A medical wastewater treatment system plays a critical role in protecting public health and ensuring the smooth operation of healthcare facilities. Choosing a reliable environmental service provider ensures regulatory compliance, cost-effectiveness, and long-term operational efficiency.

Nano Environment Technology – Construction Limited Liability Company (Nanoen) is a reputable provider of environmental services in the Mekong Delta. Over the years, Nanoen has earned the trust of clients thanks to our integrity, dedication, and responsibility toward every service we provide.

Nanoen is committed to delivering effective, regulation-compliant, and affordable solutions tailored to healthcare facilities in Can Tho and across the Mekong Delta.

Our Services Include:

Environmental permitting & consulting
Wastewater treatment system design & installation
System operation services
On-demand operator training
Microbial supply for biological treatment
Comprehensive turnkey environmental services

With our motto “Rooted in Integrity”, every product and project delivered by Nanoen is handled with complete dedication.

Contact Nanoen for a FREE consultation:
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 - 0901 229 798 - 0907 686 717

Email: nanoentech@gmail.com

Facebook: www.facebook.com/nanoentech

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