Delivery of around 7,000 tonnes of iron (II) sulfate heptahydrate (FeSO4 x 7 H2O) for the operation of the third chemical cleaning stage at the Werdhölzli sewage treatment plant in the period from April 1, 2021 to March 31, 2023.
Delivery of around 7,000 tonnes of iron (II) sulfate heptahydrate (FeSO4 x 7 H2O) for the operation of the third chemical cleaning stage at the Werdhölzli sewage treatment plant in the period from April 1, 2021 to March 31, 2023.