Huifu Grain & Oil Refining Wastewater Treatment Project
1 Project Overview
The Huifu Grain & Oil Refining Wastewater Treatment Project is an environmental infrastructure project supporting a large-scale edible oil processing facility in Hebei Province, China.
The project focuses on treating high-oil-content wastewater generated during grain and edible oil refining processes. The wastewater contains emulsified oil, high COD, and complex organic compounds that are difficult to degrade.
The system adopts a combined physical separation and advanced oxidation process to ensure stable compliance with strict discharge standards and improve resource recovery efficiency.
2 Project Information
| Item | Details |
|---|---|
| Project Name | Huifu Grain & Oil Refining Wastewater Treatment Project |
| Location | Sanhe City, Langfang, Hebei Province, China |
| Project Type | Edible Oil Processing Wastewater Treatment |
| Treatment Capacity | 500 m³/day |
| Service Object | Grain & Oil Processing Plant |
| Contract Model | EPC General Contracting |
| Core Process | Oil separation + flotation + Fenton oxidation + catalytic oxidation |
| Discharge Standard | GB 8978 Class I standard |
3 Client Challenges
High concentration of oil and grease pollution
Emulsified oil difficult to separate
High COD load and strong organic pollution
Large fluctuations in influent quality
High content of refractory organic compounds
Requirement for cost-effective long-term operation
Core Challenge
Achieve stable treatment of high-oil-content wastewater with strong emulsification and high COD variability
4 Engineering Solution
SYNERAQUA implemented a multi-stage treatment system combining physical separation and advanced oxidation
Process Flow
Grain & Oil Wastewater → Gravity Oil Separation → Dissolved Air Flotation → Fenton Oxidation → Catalytic Oxidation → Sedimentation → Compliance Discharge
Engineering Strategy
Efficient oil-water separation system
Advanced oxidation for refractory organics
Multi-stage COD reduction process
Resource recovery of separated oil
Stable automated operation system
5 Scope of Work
SYNERAQUA was responsible for full EPC delivery, including
Process design and system engineering
Oil separation and flotation system construction
Advanced oxidation system implementation
Equipment supply and installation
Electrical and instrumentation works
Automation and control system integration
Commissioning and performance testing
Technical training and support
6 Key Technologies and Engineering Highlights
Gravity Oil Separation Technology for efficient free oil removal
Dissolved Air Flotation System for emulsified oil separation
Fenton Advanced Oxidation for high-strength COD degradation
Catalytic Oxidation System for deep treatment of refractory organics
Oil Recovery System enabling partial resource reuse
7 Performance Results
Treatment Capacity: 500 m³/day
Oil Removal Efficiency: >95%
COD Removal Efficiency: >96%
Effluent Standard: GB 8978 Class I standard
Automation Level: Fully automated operation
System Stability: >99%
8 Project Value
The project significantly improves wastewater treatment performance for grain and oil processing operations
Key contributions include
Stable compliance with environmental regulations
Effective treatment of high-oil-content wastewater
Recovery of valuable oil resources
Reduced operating cost
Improved green manufacturing capability
