French English Je suis totalement contre tout processus de désalement d'eau de mer. Toute production d'eau potable va générer une quantité à l'identique d'eaux usées qui seront rejetées dans l'eau de mer. Comme tous les systèmes de traitement des eaux usées sont totalement inefficace (performance épuratoire proche de zéro) une quantité très importante de pollution organique sera rejetée dans l'eau de mer. Cette pollution diffuse diluée dans le liquide tel que l'urée se retrouvera dans l'usine de désalement. Les processus de traitement du désalement génèrent des déchets qui sont rejetés en mer. Encore un cas de pollution. Le concept d'Assainissement Biologique des eaux usées traite les eaux usées sans les rejeter dans les milieux hydrauliques naturels, il recycle le reliquat d'eau en sortie du dispositif pour l'arrosage du jardin potager ou de toute autre production agronomique. Economie d'eau potable consommée pour l'arrosage de la biodiversité, dépollution des sols et des milieux hydrauliques naturels, préservation de cette ressource rare l'eau potable des nappes phréatiques. I am totally against any process of seawater desalting. Any water production will generate an identical amount of wastewater to be discharged into the sea water. Like all wastewater treatment systems are completely ineffective (purification performance close to zero) a very large amount of organic pollution is released into the seawater. This diffuse pollution in the diluted liquid such as urea will be in desalination plant. The desalination treatment processes generate waste that will be discharged into the sea. Another case of pollution. The concept of Biological Wastewater Treatment treats wastewater without rejecting them in natural water environments. It recycles the water remaining in the output of the device for watering the garden or other agricultural production. Economy drinking water consumed for irrigation of biodiversity, soil remediation and natural water environments, preservation of this scarce resource: drinking water aquifers.
1 Comment
Dear Jean Marius: I have the same opinion about the excessive operational costs involved in the desalination treatment process, but not on what you are saying about the wastes that are discharged into the sea. Before doing it, brine is diluted to an amount much lower than the original one, hence this problem is solved by using the marine outfalls. Additionally, nowadays there are some energy recovery devices (called ERD) which can reduce the specific energy consumption up to values around 3.0 kWh/m3 depending . Apart from that, not always the use of chemical reagents is advisable in order to improve the desalination plant functioning. Best Regards
Published by Alejandro Nuñez Casanovas, Industrial Engineer