Wastewater Treatment System Upgrading and Rehabilitation Services

VIET WATER JOINT STOCK COMPANY specializes in the assessment, upgrading and rehabilitation of wastewater treatment systems for industrial plants, industrial parks and commercial facilities throughout Vietnam.

WASTEWATER TREATMENT SYSTEM UPGRADING AND REHABILITATION SERVICES

After years of operation, many wastewater treatment systems experience equipment deterioration, capacity overload, outdated technologies and declining treatment efficiency. These issues not only increase operating costs but also create challenges in meeting increasingly stringent environmental regulations.



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Instead of investing in a completely new treatment facility, many manufacturers and industrial facilities choose to upgrade and rehabilitate their existing wastewater treatment systems. This approach helps maximize the use of existing infrastructure while significantly reducing capital investment costs.

VIET WATER JOINT STOCK COMPANY specializes in the assessment, upgrading and rehabilitation of wastewater treatment systems for industrial plants, industrial parks and commercial facilities throughout Vietnam. Our experienced engineers provide tailored solutions to improve treatment efficiency, increase system capacity and ensure long-term operational stability.


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When Should a Wastewater Treatment System Be Upgraded?

Wastewater treatment systems should be evaluated for upgrading when any of the following conditions occur:

Insufficient Treatment Capacity

As production expands and wastewater flow increases, the existing treatment system may no longer be capable of handling the required hydraulic and pollutant loads.

Effluent Quality Fails to Meet Standards

If parameters such as COD, BOD, TSS, Ammonia or Total Nitrogen frequently exceed discharge limits, system upgrading becomes necessary.

Equipment Deterioration

Long-term operation may result in reduced performance or failure of:

  • Air blowers

  • Pumps

  • Mixers

  • Sludge dewatering equipment

  • Electrical and control systems

Outdated Treatment Technology

Older treatment systems may no longer meet current environmental requirements or operational efficiency expectations.

High Operating Costs

Excessive energy consumption, chemical usage and maintenance expenses often indicate the need for system optimization.


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Common Problems Found in Existing Wastewater Treatment Systems

During rehabilitation projects, Viet Water frequently encounters the following issues:

Biological Process Failure

Common causes include:

  • Shock loading

  • Toxic wastewater discharge

  • Nutrient deficiency

  • Insufficient aeration

These conditions significantly reduce COD and BOD removal efficiency.

Poor Sludge Settling

Symptoms include:

  • Floating sludge

  • Black-colored sludge

  • High sludge volume index (SVI)

These issues negatively impact clarifier performance and effluent quality.

Inefficient Nitrification

Insufficient nitrification results in elevated ammonia concentrations in treated wastewater.



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High TSS in Effluent

Caused by:

  • Poor floc formation

  • Clarifier malfunction

  • Hydraulic overloading

Mechanical Equipment Failures

Commonly affected equipment includes:

  • Air blowers

  • Submersible pumps

  • Agitators

  • Chemical dosing systems


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Scope of Wastewater Treatment System Rehabilitation

System Assessment and Performance Evaluation

Viet Water engineers conduct:

  • Influent wastewater analysis

  • Process performance evaluation

  • Capacity assessment

  • Equipment inspection

This assessment forms the basis for selecting the most suitable rehabilitation strategy.

Rehabilitation of Treatment Tanks

Typical activities include:

  • Waterproofing repairs

  • Structural reinforcement

  • Corrosion protection

  • Tank volume optimization

Equipment Replacement and Modernization

Services include:

  • Air blower replacement

  • Pump replacement

  • Chemical dosing system upgrades

  • Mixer installation

  • Sludge dewatering equipment upgrades

New equipment is selected based on actual operational requirements and energy efficiency considerations.



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Piping and Process Modification

Works include:

  • Piping rerouting

  • Valve replacement

  • Flow meter installation

  • Process optimization

Technology Upgrading

Depending on wastewater characteristics, Viet Water may integrate advanced treatment technologies such as:

MBBR Technology

Enhances biological treatment performance through increased biomass concentration.

MBR Technology

Combines biological treatment and membrane filtration to achieve superior effluent quality while reducing footprint requirements.

Ultrafiltration (UF)

Removes suspended solids, bacteria and microorganisms.

Reverse Osmosis (RO)

Produces high-quality reclaimed water suitable for reuse applications.

PLC/SCADA Automation

Provides automated operation, real-time monitoring and remote system management.

Biomass and Media Enhancement

Services include:

  • Microbial seeding

  • MBBR media installation

  • Filter media replacement

  • Biological process stabilization


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Viet Water's Rehabilitation Process

Step 1: Site Survey and Data Collection

  • Wastewater sampling and analysis

  • Flow measurement

  • Existing system inspection

Step 2: Performance Evaluation

  • Process efficiency assessment

  • Equipment condition analysis

  • Capacity verification

Step 3: Root Cause Analysis

Our engineers identify the underlying causes of system underperformance.

Step 4: Rehabilitation Proposal

Customized solutions may include:

  • Capacity expansion

  • Process modification

  • Equipment modernization

  • Automation upgrades

Step 5: Implementation and Technology Transfer

Upon completion, Viet Water provides:

  • System commissioning

  • Operator training

  • Technology transfer

  • Operational guidance


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Benefits of Wastewater Treatment System Upgrading

Lower Capital Investment

Existing infrastructure can often be reused, reducing project costs significantly.

Improved Treatment Efficiency

Upgraded systems achieve consistent compliance with environmental discharge standards.

Reduced Operating Costs

Optimization of:

  • Energy consumption

  • Chemical usage

  • Labor requirements

Leads to substantial operational savings.

Extended System Lifespan

Modernized equipment and optimized processes improve reliability and service life.

Why Choose Viet Water?

Viet Water has extensive experience in:

  • Industrial wastewater treatment

  • Domestic wastewater treatment

  • Water reuse systems

  • MBR, UF and RO technologies

  • Industrial water recycling solutions

We provide complete services including:

  • System assessment

  • Process design

  • Rehabilitation engineering

  • Construction and installation

  • Commissioning

  • Operator training

  • Technology transfer

Every solution is customized based on wastewater characteristics, site conditions and client objectives.



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Contact Information

VIET WATER JOINT STOCK COMPANY

  • Address: 345 Pham Van Bach Street, Tan Binh Ward, Ho Chi Minh City, Vietnam

  • Fabrication Workshop: Thanh Xuan 52 Street, Thanh Xuan Ward, Ho Chi Minh City, Vietnam

  • Tel: (+84) 28 6272 4888

  • Hotline: (+84) 904 506 065

  • Email: Info@vietwaterjsc.com

  • Website: www.vietwaterjsc.com

Viet Water – Your Trusted Partner for Wastewater Treatment System Upgrading and Rehabilitation

We are committed to delivering cost-effective, technically advanced and sustainable solutions that improve treatment performance, ensure regulatory compliance and maximize the value of your existing wastewater treatment infrastructure.

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