[     Product listing ](/en/technologies-0 "  Product listing")

 

 

 

#### As a pioneer and expert in solar sludge drying, Veolia Water Technologies has developed innovative solutions such as SOLIA™ Mix.



[Contact an expert](https://www.veoliawatertechnologies.com/en/contact)

 



 

 



 [Overview](#1) [Applications](#2) [Resources](#3) 

 

 

## Overview

 

 

 

This new and more compact process can achieve a dry solids content up to 90%, reducing sludge volume and removal costs.

Mainly dedicated to small and mid-sized municipalities and industries, SOLIA™ Mix opens the way to all outlet disposal routes: agricultural reuse, composting, landfill, incineration and co-incineration.

   ![](/sites/g/files/dvc2471/files/styles/default/public/image/2019/04/pia.jpg.webp?itok=HO_KEKHS)   



**Advantages**

Reliable and robust, SOLIAMIX™ follows a race-track pattern:

- More efficient: increase in volume of the sludge turned in one pass
- More productive: treated sludge quantity is 30% greater for the same surface area
- Faster: reduction of the drying cycle duration
- More compact and economical

**Features & Benefits**

**EFFICIENCY AND RELIABILITY**

- Input sludge volume reduced by 3 to 4 times
- Drying area reduced
- Solar drying and bio-drying combination
- Adapted to climatic variations

**COMFORT AND ACCEPTABILITY**

Sludge storage before energy or agricultural reuse

Odor control

Automated operation

**SAVINGS**

- Construction costs reduced
- Limited operating expenses 
    - Minimal maintenance
    - Workforce cost reduced due to automation
    - Energy savings

**SUSTAINABLE DEVELOPMENT**

- Aesthetic and easily integrated architecture
- Use of renewable energy sources
- Low carbon footprint

***Among our references in solar drying:***

- Bras-Panon, Réunion Island, France (2014) - 680 m2 / 13,000 PE
- Belchatow, Poland (2014) - 6 144 m2 / 85,000 PE
- Saint-Michel-en-L'Herm, France (2013) - 300 m2 / 6,500 PE
- Pia, France, (2011) - 947 m2 / 12,000 PE\*

\* PE: Population Equivalent



 

 

 



 

 

 

## Applications

 

 

 

Based on combined solar drying and bio-drying, SOLIA™ Mix dries and stores sludge in a horticultural greenhouse under continuous ventilation with dry air from the outside.

Dewatered sludge and drying sludge are mixed and shaped into windrows by the SOLIAMIX™ windrow turner.

Windrow operation and regular addition of fresh sludge maximize bio-drying, and promote easy storage of sludge on a 6 months to 1 year cycle in the greenhouse. Solar radiation, along with bio-drying, promotes a temperature rise within the windrows, thus improving water evaporation.

   ![](/sites/g/files/dvc2471/files/styles/default/public/image/2019/04/15565%2Csoliamix_schema.png.webp?itok=6ZLats-W)   



**Available Options**

***OPTIMIZING DRYING CYCLES BY ADDING ENERGY***

To ensure consistent performance throughout the year, SOLIA™ Mix may be fitted with an additional source of energy.

The heat can be used in various ways such as air heating or floor-heating system.

The heat from the treated effluent is extracted by a heat pump and recovered to supply energy to a floor-heating system.

This energy input reduces both the greenhouse surface area and the drying cycle duration while maintaining the treatment capacity, regardless of adverse climatic conditions.

***INTELLIGENT VENTILATION MANAGEMENT***

Veolia has developed ACoDry, a customizable advanced monitoring and control system to optimize greenhouse energy consumption, of which ventilation can represent up to 90% in electricity.

Through analysis and adjustment of key parameters, such as hygrometry, temperature, solar radiation and sludge properties, ACoDry is able to reduce the power consumption by 50% while maintaining the same level of drying performance.

***EFFICIENT ODOR TREATMENT***

Sludge treatment is often synonymous with bad odors. Based on the local context and characteristics, Veolia offers two patented solutions, Aquilair™ and Alizair™, designed to reduce odor emission and provide optimal comfort.



 

 

 



 

 

 

## Resources

 

 

 

 

 

 



 

 [PDF

  SOLIA™ MIX Brochure  (724.38 KB)  

    ](/sites/g/files/dvc2471/files/document/2019/04/3326%2CBrochure_SoliaMix_EN_0415.pdf)