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



 

 

 

### The Client’s needs

Andrea Aliscioni COO Milan Water Service, Metropolitana Milanese SpA, reveals "*The main characteristics of Nosedo Plant is the big volume of water treated that is reused for agriculture; Nosedo WWTP is one of the best examples of water reuse in Europe. Our challenge is to guarantee every time the best condition for the water reuse.*"

That is why wastewater is treated "*not only according to environmental directives, but also for the possibility to have a circular use of the water*" explains Francesca Pizza, process manager at Nosedo WWTP.

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### AQUAVISTATM Plant

AQUAVISTA™ Plant is a **holistic digital solution** composed of a suite of intelligent software solutions for **real-time optimization of process performance**. It provides a state-of-the-art auto-pilot to optimize the whole wastewater system, including sewer network and treatment plant.  
AQUAVISTA™ Plant focuses on real-time automated optimization of the consumption of energy and chemicals, biological and hydraulic capacity enhancement, stable operation and compliance of wastewater treatment plants and sewer networks.



 

 

 



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### Why AQUAVISTATM Plant: Deciding factors

- Having a system that can integrate the operation of the sewer system and the WWTP.
- Obtain significant total average operational savings from reduced energy consumption, chemical consumption and sludge production.
- Better handling of the large biological load variations together with a better process overview and less manual adjustments.
- Achieve more hydraulic capacity of the biological process, giving a better handling of wet weather situations.
- Future plans include the possibility of expanding the solution to also cover the whole Milan city sewer system.



 

 

 



###   
AQUAVISTA™ Plant Key features

The AQUAVISTA™ Plant package for OPEX savings at Nosedo WWTP (1,250,000 PE) includes the following features:

- DO & Nitrogen Removal
- Mixer (denitrification tank)
- Air Supply, Blower Pressure
- Return Activated Sludge
- Solids Retention Time
- Standby (biological lines)
- P-precipitation
- Grit Chamber Aeration
- NO3-recirculation

   
The following additional features will further support the enhancement of the hydraulic capacity:

- Stormwater Mode (Aeration Tank Settling) with Rain Gauge / Sewer Measurements
- Max. Flow, Inlet Biology

### Additional client benefits

One of the most significant challenges WWTPs have to face is, according to Francesca Pizza, gaining as much control as possible of the biochemical process. With 40% of the total plant energy consumption, it is "*the most demanding \[process\] from an energy point of view*".  
AQUAVISTATM Plant allows "*Operators \[to\] have an instrument to make real time decisions on the process*" Francesca Pizza, process manager in Nosedo WWTP says.

- Better control of processes
- OPEX savings



 

 

 



> *‘AQUAVISTATM Plant \[...\] boosts our performance by increasing the hydraulic capacity during wet weather. It is a **smart solution with a high effect**.’*

Andrea Aliscioni, COO Milan Water Service



 

 

 



 

 

### Nosedo WWTP

Nosedo Wastewater Treatment Plant (WWTP) is Milan’s main wastewater treatment plant. It has a capacity of 1,250,000 PE with full nitrification and denitrification and is the largest plant in Europe having the final effluent fully reused for agricultural purposes.

**432.000 m3** treated a day  
**5 m3/s** treated during dry weather  
**15 m3/s** during rainy events

**60% to 70%** of the treated water is directed to **agriculture**



 

 

 

 

 

 





   ![](/sites/g/files/dvc2471/files/styles/media/public/image/2019/10/Aquavista-Plant-Why.jpg.webp?itok=JxB4aN4a)   





 

 





### Key figures

**Expected achievements**

- OPEX savings:   
     Energy savings:  
     - Aeration, biology  
     - Mixing  
     - Return Activated Sludge  
     - NO3-recirculation  
     - Grit Chamber Aeration  
     Chemical savings:  
     - P-precipitation, Fe3C  
     Sludge reduction  
     ​​​​​​​
- Increased hydraulic capacity during wet weather: 20 - 30%
- Stable operation, less manual adjustment



 

 

 

 

 

 





   ![](/sites/g/files/dvc2471/files/styles/media/public/image/2019/10/Nosedo-night.jpg.webp?itok=avmV2OCN)