CENTRALIZED DOMESTIC WASTEWATER TREATMENT

CENTRALIZED DOMESTIC WASTEWATER TREATMENT: OPTIMAL SOLUTIONS FOR A GREENER ENVIRONMENT

With the rapid pace of urbanization, residential areas, apartment complexes, urban zones, and industrial parks are expanding at a fast rate. This leads to a significant amount of domestic wastewater being discharged daily. Centralized domestic wastewater treatment is an urgent issue to ensure public health and environmental protection.

I. Characteristics of Centralized Domestic Wastewater

Domestic wastewater from centralized areas such as urban zones, residential areas, factories, and offices often contains organic matter, oils, detergents, and harmful microorganisms. The main characteristics include:

• High BOD and COD levels: These indicators reflect the amount of organic matter that needs to be decomposed in the wastewater.
• Contains bacteria and viruses: Especially pathogenic bacteria that can affect human health.
• Contains nutrients: Nitrogen and phosphorus can easily cause eutrophication, leading to excessive algae growth.

II. Centralized Domestic Wastewater Treatment Process

The centralized domestic wastewater treatment system usually includes key stages such as collection, mechanical treatment, biological treatment, physico-chemical treatment, and disinfection.

2.1 Collection and Mechanical Treatment Stage

• Collection: Wastewater from households, residential areas, restaurants, and hotels is collected through the sewer system and directed to a centralized treatment plant.
• Mechanical Treatment: Involves processes such as screening, grit removal, and oil separation to eliminate large solid waste.

2.2 Biological Treatment Stage

Biological technology is widely used due to its ability to effectively remove organic matter. Common technologies include:

• AO Technology (Anoxic – Oxic): Effectively treats nitrogen and BOD in wastewater.
• AAO Technology (Anaerobic – Anoxic – Oxic): Thoroughly removes nutrients like nitrogen and phosphorus.
• MBBR Technology (Moving Bed Biofilm Reactor): Utilizes mobile biofilm carriers to enhance the breakdown of organic matter.

2.3 Physico-Chemical Treatment Stage

Processes such as coagulation, flocculation, and sedimentation help remove small particles left after biological treatment.

2.4 Disinfection Stage

Disinfecting the treated wastewater is the final step to ensure it is safe for the environment and can be reused for purposes such as irrigation or public infrastructure.

III. Advanced Centralized Wastewater Treatment Technologies

3.1 MBR Technology (Membrane Bioreactor)

• Advantages: Effectively eliminates bacteria and pathogens, resulting in high-quality treated water.
• Disadvantages: High investment and operational costs, requiring frequent maintenance.

3.2 SBR Technology (Sequencing Batch Reactor)

• Advantages: Compact design, easy to operate and manage.
• Disadvantages: Limited treatment capacity during significant fluctuations in wastewater flow.

3.3 MBBR Technology

• Advantages: Efficiently treats wastewater, suitable for areas with large and fluctuating wastewater flow.
• Disadvantages: Requires careful control of biofilm carriers to maintain performance.

IV. Benefits of Centralized Domestic Wastewater Treatment Systems

• Environmental Protection: Minimizes the risk of water pollution, ensuring public health.
• Odor Reduction: Efficient treatment processes help eliminate unpleasant odors.
• Water Reuse: Treated water can be reused for purposes like irrigation, street cleaning, conserving fresh water resources.

V. Wastewater Treatment Services at VIET WATER CORPORATION

Viet Water Corporation is a leading company in the field of centralized domestic wastewater treatment, providing optimal solutions and modern technologies to meet customer needs.

• Address: 345 Pham Van Bach, Ward 15, Tan Binh District, Ho Chi Minh City.
• Manufacturing Facility: Thạnh Xuân 52 Street, Thanh Xuan Ward, District 12, Ho Chi Minh City.
• Tax Code: 0312931928.
• Phone: 028.6272.4888 - 0904.506.065.
• Email: Info@vietwaterjsc.com – manager@vietwaterjsc.com.

With a team of experienced experts and state-of-the-art equipment, Viet Water commits to providing customers with effective, safe, and sustainable wastewater treatment solutions.

Contact us now for the best consultation and support on centralized domestic wastewater treatment solutions.