Key Technologies Used in Industrial Wastewater Treatment | Complete Guide for Malaysian Industries

What Is Screening?

Screening removes large solids before they enter downstream treatment processes.



Common screening technologies include:

• Bar Screens
• Rotary Drum Screens
• Static Screens
• Fine Screens

Best For

• Food and beverage wastewater
• Poultry processing plants
• Palm oil processing
• Manufacturing facilities with high suspended solids

What We Like

Proper screening is often one of the most cost-effective investments because it reduces loading on downstream equipment and improves overall plant stability.

Common Mistake

Many facilities focus on biological treatment upgrades while overlooking inadequate screening systems that continuously introduce excessive solids into the treatment process.

What Is an Equalisation Tank?

Flow balancing. Load balancing. Process stabilisation.

Equalisation tanks act as buffers that smooth out fluctuations in wastewater flowrate and pollutant concentrations.

Benefits include:

• Reduced shock loading
• Improved biological stability
• Better chemical dosing efficiency
• More consistent treatment performance

Pro Tip

In many industrial facilities, improving equalisation can solve operational issues without requiring major treatment upgrades.

What Is DAF?

DAF removes suspended solids, fats, oils, grease, and floatable contaminants using microscopic air bubbles.

The air bubbles attach to contaminants and carry them to the surface where they are removed as sludge.

Best For

• Food processing wastewater
• Poultry processing wastewater
• Palm oil wastewater
• Industrial wastewater with high oil and grease

Advantages

Operational Insight

DAF performance depends heavily on chemical selection, reaction time, Air-to-Solids (A/S) ratio, and hydraulic loading. Even a well-designed DAF can underperform if operational conditions are not optimised.

What Is Activated Sludge?

Activated sludge uses suspended microorganisms to biologically degrade organic pollutants.

It remains one of the most widely used industrial wastewater treatment technologies globally.

Best For

• Moderate-strength wastewater
• Large treatment footprints
• Facilities with experienced operators

Advantages

• Proven technology
• Widely understood
• Lower membrane costs
• Flexible operation

Limitations

• Larger footprint requirements
• Clarifier dependence
• Sludge settling challenges
• Lower biomass concentration

Typical MLSS Range

2,500 – 5,000 mg/L

What Is MBBR?

MBBR uses specially designed plastic carriers that provide surface area for biofilm growth.

The microorganisms attach to the carriers rather than remaining entirely suspended in the water.



Advantages

• Increased biological capacity
• Improved shock-load resistance
• Stable treatment performance
• Easier upgrades for existing plants

Best For

• Capacity upgrades
• Facilities with loading fluctuations
• Plants facing footprint constraints

Practical Observation

MBBR is frequently selected when existing treatment plants require capacity expansion without constructing additional large biological tanks.

What Is MBR?

MBR combines biological treatment with membrane filtration.

Instead of relying on secondary clarifiers, membranes physically separate treated water from biomass.

Advantages

• Excellent effluent quality
• High MLSS operation
• Smaller footprint
• Water reuse capability

Typical MLSS Range

8,000 – 15,000 mg/L

Best For

• Water reuse projects
• Space-constrained facilities
• High-performance treatment requirements

Engineering Insight

While MBR offers superior effluent quality, it is not automatically the best solution. Facilities must evaluate energy consumption, membrane maintenance requirements, operational expertise, and reuse objectives before selecting MBR technology.

Why Is Sludge Management Important?

Cost reduction. Disposal optimisation. Sustainability.

Many facilities focus on wastewater treatment but overlook sludge handling costs.

Common sludge technologies include:

• Filter Press
• Screw Press
• Belt Press
• Centrifuge
• Low-Temperature Sludge Dryer

Benefits

• Reduced disposal volume
• Lower transportation costs
• Improved plant housekeeping
• Better overall treatment economics

Industry Observation

In many industrial facilities, sludge disposal represents one of the highest recurring operating costs. Improving sludge dryness often generates faster financial returns than upgrading the biological treatment process itself.

Looking for the Right Wastewater Treatment Technology?

Selecting the wrong technology can lead to years of operational challenges, excessive chemical consumption, high energy costs, and recurring compliance issues.



The technical team at Cheme Advance Services Sdn Bhd has more than 20 years of experience helping manufacturers across Malaysia evaluate, design, optimise, and upgrade industrial wastewater treatment systems.

Our expertise includes:

• Industrial Wastewater Treatment Systems (IETS)
• MBR and MBBR technologies
• Activated Sludge optimisation
• UASB and EGSB anaerobic systems
• DAF design and optimisation
• Sludge dewatering and sludge drying
• Water reuse and recycling solutions
• Wastewater plant audits and troubleshooting