Potato Starch Processing Wastewater Treatment Project, Dingbian, Shaanxi
Food Processing Wastewater | UASB + A/O System | EPC Delivery1 Project Overview
The Shaanxi Dingbian Potato Starch Processing Wastewater Treatment Project is an environmental infrastructure project supporting a large-scale potato starch production industrial park in Shaanxi Province, China.
The project treats high-strength organic wastewater generated during potato washing, starch extraction, and processing. The wastewater contains high COD, high suspended solids, and strong seasonal fluctuation characteristics.
The system adopts a biological treatment process combining anaerobic and aerobic technologies to ensure stable compliance with discharge standards and support sustainable agricultural industrial development.
2 Project Information
| Item | Details |
|---|---|
| Project Name | Shaanxi Dingbian Potato Starch Processing Wastewater Treatment Project |
| Location | Dingbian County, Yulin City, Shaanxi Province, China |
| Project Type | Food Processing Wastewater Treatment |
| Treatment Capacity | 1,500 m³/day |
| Service Object | Potato Starch Processing Plant |
| Contract Model | EPC General Contracting |
| Core Process | Pretreatment + UASB + A/O |
| Discharge Standard | GB 18918 Class B standard |
3 Client Challenges
High COD concentration in starch processing wastewater
High suspended solids content from potato residues
Strong seasonal production fluctuations
High organic load impact on biological system
Strict environmental acceptance requirements
Requirement for low energy and low operating cost system
Core Challenge
Achieve stable treatment of high-strength starch wastewater under strong seasonal load variation conditions
4 Engineering Solution
SYNERAQUA implemented a multi-stage biological treatment system optimized for starch processing wastewater
Process Flow
Production Wastewater → Screening → Equalization Tank → Pretreatment System → UASB Anaerobic Reactor → A/O Biological Treatment → Secondary Clarification → Disinfection → Compliance Discharge
Engineering Strategy
High-efficiency anaerobic degradation of organic load
Biological nitrogen and carbon removal system
Load adaptation design for seasonal variation
Sludge reduction optimization design
Stable automated operation system
5 Scope of Work
SYNERAQUA was responsible for full EPC delivery, including
Process design and system engineering
Anaerobic treatment system construction
Biological treatment system implementation
Equipment supply and installation
Electrical and instrumentation works
Automation and control system integration
Commissioning and performance testing
Operator training and technical support
6 Key Technologies and Engineering Highlights
High-Rate UASB System enabling efficient COD reduction under high-load conditions
A/O Biological Treatment System ensuring stable nutrient removal performance
Load-Adaptive Process Design for seasonal production variation
Sludge Reduction Optimization improving long-term operational efficiency
Fully Automated Control System ensuring stable and continuous operation
7 Performance Results
Treatment Capacity: 1,500 m³/day
COD Removal Efficiency: >95%
BOD Removal Efficiency: >98%
Effluent Standard: GB 18918 Class B standard
Automation Level: Fully automated operation
System Stability: >99%
8 Project Value
The project significantly improves environmental performance for agricultural processing operations
Key contributions include
Stable compliance with discharge standards
Reduced operating cost through anaerobic process efficiency
Improved resource utilization efficiency
Enhanced sustainability of agricultural industrial park
Strong adaptability to seasonal production fluctuations
