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

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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