The subject of the contract is the supply of a chemical agent – ferric sulphate to support technological processes in the sludge part of the "Hajdów" Sewage Treatment Plant in Lublin.

The subject of the contract is the delivery of 1 300 Mg of a chemical agent – ferric sulphate, in order to reduce the precipitation of struvite and improve the parameters of fermented sludge in the "Hajdów" Sewage Treatment Plant in Lublin.

Required product properties:

• total iron 11.6 ± 0.4%

• iron (Fe2+) < 0.3%

• Fe2SO4 39 – 43 %

• pH value < 1

• density at 20°C 1.4 – 1.6 g/cm3

• crystallization temperature - 20oC

• dark brown solution form

• viscosity at 20°C 30 ± 10 mPas