Introduction:

Chemical substances are widely used in different production processes and applications of modern life; therefore, their use has become widespread. A significant number of them are considered dangerous due to properties or characteristics that can affect the environment and living beings. Disused and expired chemical products (PQOC) accumulation in the oil industry is a problem that dates back several years, so it is necessary to define and apply management options that allow the risks associated with these substances reduction.

Objective:

To reduce PQOC inventories in the oil industry, through the application of management alternatives.

Materials and Methods:

The analysis of the PQOC stocks was carried out, taking into account the principles of hierarchy in waste management, which is proposed, after minimizing their generation, use and recovery. Each substance was evaluated for treatment or final disposal solutions application, considering type, quantity, danger, particular characteristics and technical conditions available for run them, in addition to applicable legal requirements.

Results and Discussion:

Different management options were defined and applied, such as: stabilization of the site, other uses, transfer to other users, energy use, as well as dilution and neutralization.

Conclusions:

These substances inventories were reduced by 736.2 kg and 201.3 L. Economic and environmental analysis show the feasibility of applying these alternatives, also reducing the risks generated by their prolonged storage.

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