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Understanding High Organic Loads

Food processing generates wastewater with significantly elevated levels of organic matter, creating unique treatment challenges. These high organic loads, measured as BOD (Biochemical Oxygen Demand) and COD (Chemical Oxygen Demand), require specialised treatment approaches to achieve regulatory compliance and enable water reuse.

Typical BOD/COD Levels

Food processing wastewater typically ranges from 1,000-50,000 mg/L BOD, compared to municipal wastewater at 200-400 mg/L. This represents a 5x to 250x increase in organic load requiring specialised treatment capacity.

Organic Sources

Organic residues include proteins, carbohydrates, fats, oils, and suspended solids from raw materials, processing byproducts, and cleaning operations. Each food category presents unique organic composition challenges.

Treatment Challenges

High organic loads can overwhelm conventional treatment systems, cause odour issues, increase sludge production, and create oxygen depletion in receiving waters without proper treatment.

Treatment Approaches for High Organic Loads

Biological Treatment

Our MBBR and SBR biological reactors use specialised microbial cultures to break down organic compounds, achieving up to 95% BOD removal efficiency.

  • High-rate biological oxidation
  • Compact footprint design
  • Handles variable organic loads
  • Low operational costs
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Chemical Pre-Treatment

Coagulation and flocculation processes remove colloidal organic matter before advanced biological treatment, improving overall system efficiency.

  • Enhanced solids removal
  • Reduced biological load
  • Improved effluent quality
  • Automated dosing systems
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Primary Separation

DAF flotation systems effectively remove suspended organic solids and reduce organic loading on downstream biological processes.

  • High solids capture rate
  • Handles variable flows
  • Compact design
  • Low energy consumption
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Multi-Stage Organic Load Reduction

1

Pre-Treatment

Screening removes large organic particles and protects downstream equipment from damage and clogging.

2

Primary Treatment

DAF flotation removes suspended solids and reduces organic load by 40-60% before advanced biological treatment.

3

Biological Oxidation

MBBR/SBR systems biologically degrade dissolved organics, achieving 85-95% BOD removal.

4

Polishing

Filtration and clarification remove residual solids and ensure compliance with discharge limits.

5

Sludge Management

Dewatering systems reduce sludge volume for efficient disposal or beneficial reuse.

Typical Treatment Performance

BOD Removal
85-95%
COD Removal
80-90%
TSS Removal
90-99%
Hydraulic Loading
Up to 15 m/h

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Oil & Grease Removal

Effective FOG separation through advanced DAF systems and coagulation/flocculation processes.

Oil & Grease Removal

Water Reuse Potential

Enable water recycling opportunities to reduce freshwater consumption and operational costs.

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Regulatory Compliance

Meet discharge limits for BOD, COD, TSS, nitrogen, and phosphorus with compliant treatment systems.

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Need help with high organic load treatment?

Our experts can design a system tailored to your specific wastewater characteristics.

Industries We Serve

Our expertise spans multiple industries with sector-specific water treatment solutions.