Limestone Storage Fabric Silo for Drinking Water Treatment
Our client is a water authority located in Haute-Saône. The organisation is responsible for the production, treatment and distribution of water to residents in its region. Its clear objectives are to ensure the security of water supply, to minimise leaks in the network and to maintain the quality of drinking water at the tap. An additional factor to be taken into account is the increase in extreme water stress and its frequency.
The injection of terrestrial limestone into water treatment plants is mainly aimed at remineralising the water and achieving an optimal calcium-carbonate balance. This process is essential to ensure that the water is neither corrosive nor encrusting, thus preserving the integrity of pipes and equipment.
During water treatment, certain steps, such as decarbonation or reverse osmosis, can reduce the mineral concentration, making the water aggressive to infrastructure. To remedy this, limestone is added in the form of calcium carbonate (CaCO₃) or by injecting lime (Ca(OH)₂) and carbon dioxide (CO₂). These additions increase the hardness of the water and stabilise its pH, thus ensuring balanced water.
La problématique du client
Lors de son appel d’offres, notre client, dont les locaux jouxtent l’un des édifices religieux les plus emblématiques du XXe siècle, s’est trouvé face à un défi. Il devait rénover sa station avec une élégance et une finesse telles que la nouvelle architecture s’intègre harmonieusement à ce patrimoine . Un équilibre subtil à trouver pour que la nouvelle station ne fasse qu’un avec ce joyau architectural et respecte ainsi son aura intemporelle.
The handling solution provided by Syvrac
In order to comply with the strict requirements imposed by Bâtiments de France for perfect integration into the landscape, the premises had no excess space. This limitation prompted us to take on the technical challenge of installing a 30-tonne silo in a confined space and optimising every square centimetre to meet the project’s requirements.
It was in this context that Syvrac developed an innovative storage solution. We designed a custom-made fabric silo that integrates perfectly into the building and can store terrestrial or marine limestone. This silo, equipped with a hydro-injector, ensures precise and efficient distribution of the material. The decision not to use an external composite silo was decisive, allowing for harmonious aesthetic and functional integration into the environment. Every detail has been designed to combine technological innovation with landscape preservation, creating a symbiosis between modernity and respect for heritage.
The silo, measuring 3,800 x 3,800 x 5,610 mm, is designed with three levels to effectively distribute the loads exerted on the fabric during the storage operation. Its square structure, measuring 120 x 120 mm and 3 mm thick, rests securely on a retention basin with a capacity of 100 m³.
Upon leaving the silo, the limestone is directed to a 50 kg cone, which serves as a receptacle before being distributed via a hydro-injector to the three filters. Each filter, with a capacity of 8 tonnes, allows the water to benefit from a contact time of 20 minutes, thus promoting its remineralisation. Once treated, the water is stored in the retention basin before being distributed to subscribers.
Storage in accordance with the requirements of Bâtiments de France
Installation inside a water treatment plant
Indoor Fabric Silo for Limestone Storage in a Drinking Water Plant
Indoor silo installation
Limestone storage system
Limestone silo equipped with an unloading system