[     Business case listing ](/en/case-studies "  Business case listing")



 

 

 

### **The client**

- 300,000 PE (people equivalent)
- Located in the central Netherlands
- Operated by Waterschap Vallei en Veluwe
- 2 process lines with 2 process tanks in each line - total volume : 36,000m3
- 6 secondary clarifiers - total surface area : 9,225m2



 

 

 



### **The challenges**

- Increased plant load over several years, leading to non-compliance with EU effluent standards.
- 20% increase in plant load expected over the next 5 years.
- To address this, Waterschap Vallei en Veluwe had to either extend the plant by a third process line or find another way to optimize capacity and increase treatment efficiency.



 

 

 

 

 

 



 

### **The solution**

- To avoid or postpone a costly extension of the plant, the WWTP implemented an online control system for optimizing biological treatment capacity.
- The system is a holistic and data-driven digital solution called Hubgrade Wastewater Plant Performance.
- Hubgrade provides real-time optimization of process efficiency and replaced the former PLC-based online control
- The system offers a global overview in a web-browser user interface.
- The implementation of Hubgrade Wastewater Performance Plant (HWP) resulted in the following benefits:
    - Ensured compliant effluent, below EU’s quality standards
    - Reduced environmental impact by reducing total-N and total-P in effluent
    - Minimized operational expenses on energy and chemicals
    - Significantly reduced capital investment by avoiding the construction of a new line.



 

 

 

 

 

 



 

 

 





 

 

### KEY FIGURES

- Duration: 12 years
- Type: BioDenipho design
- M3 treated per day: 40,000
- 40% increase in hydraulic capacity
- 35% reducing Total-N in effluent (while the plant load increase by 38% in the last 10 years)
- > 10M€ CAPEX saved by deferring extra line building