Biogas is produced by the fermentation of organic substances of animal and vegetal origin in absence of oxygen (anaerobic process). This process produces a **highly conductive aqueous stream** contaminated by heavy metals, called **digestate**. It also contains a high concentration of ammonia, nitric nitrogen, methane, phosphorus and BOD. Due to this specific chemical composition, environmental regulations often do not allow it to spread directly to the fields.

## Anaerobic digestion wastewater and digestate treatments

Combining industrial performance and sustainable development while remaining competitive requires that the biogas and biofuels industry ensure **safe industrial processes**, that **reduce operational costs**, providing significant savings, and that implement solutions to comply with environmental regulations, which ultimately lead to the public’s acceptance of a site.

EVALED evaporators are a technological solution for:

- **Treatment of digestate** using hot water coming from cogeneration
- **Treatment of streams highly concentrated in sugars**, to obtain a by-product for biogas plants feeding

## Where to use our systems for wastewater treatment of anaerobic digestate

EVALED wastewater evaporation systems are the perfect solution to the **treatment of sludge digesters wastewater**; our evaporators can **treat the digestate** coming from the biogas production processes, obtaining water for internal use and thus reducing the costs for discharge.

- Biogas plants: by-products, manure, solid and liquid waste
- Biogas plants: engineering companies
- Biodiesel production plants
- Biomass hydrolysis sugar production

## Application & products

BIOGAS

| Application | Evaled | ADDED VALUE |
|---|---|---|
| Digestate from anaerobic digestion of F&B/Agricultural by-products and manure | RV, AC | Nitrate and CO 2 reduction, digestate volume reduction |
| Digestate from anaerobic digestion of organic solid waste | RV, AC | Nitrate and CO 2 reduction, digestate volume reduction |
| Gas scrubber biogas production | RV, AC | Nitrate and CO 2 reduction, digestate volume reduction |
| Wastewater from biomass sugar transformation | PC | Water and product recovery, sludge reduction |
| New or revamping wastewater plants | RV, AC | Water reuse, disposal & operational costs reduction |



BIODIESEL

| Application | Evaled | ADDED VALUE |
|---|---|---|
| Gas scrubber biodiesel production (Fischer Tropsch) | RV | Water reuse, disposal cost reduction |





 

 

 



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Capabilities

 

    

    

 

###       Capabilities 

Biogas plants – by-products, manure, solid and liquid waste   
Biogas plants – Engineering companies  
Biodiesel production plants  
Biomass hydrolysis sugar production



 

 

 



 

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