October 2020

Special Focus: Plant Safety and Environment

Protect your assets and our environment

Process cooling usually comprises the largest part of the water footprint of a refinery or petrochemical plant.

Ruitenberg, R., Nalco Water, an Ecolab company

Process cooling usually comprises the largest part of the water footprint of a refinery or petrochemical plant. Typically, most treatment programs contain phosphate (PO4) and zinc (Zn) as key components in corrosion control to protect assets. These inorganic phosphates-based programs raise concerns of eutrophication in sensitive water bodies receiving the cooling water blowdown. Although surface run-off and sewage disposal are the main sources of eutrophication,1 legislation on discharge of nutrients is tightening. Similarly, the use of zinc is restricted in some regions, and industrial producers have begun to seek more environmentally friendly treatment solutions to comply with the changing

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