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Overview

The Wastewater Treatment System is designed to treat industrial and produced wastewater generated in Oil & Gas facilities, ensuring safe disposal, reuse, or reinjection in compliance with environmental regulations.
The system reduces pollutants, suspended solids, hydrocarbons, and dissolved contaminants, protecting the environment and supporting sustainable plant operation.

System Scope

Wastewater Treatment Systems are engineered as fully integrated packages and typically include the following main components:

  • Inlet manifold and isolation valves
  • Equalization and buffer tanks
  • Primary treatment units (oil–water separation, screening)
  • Biological treatment systems (when required)
  • Physical and chemical treatment units (coagulation, flocculation)
  • Filtration and polishing units
  • Sludge handling and dewatering systems
  • Chemical dosing systems
  • Transfer and recirculation pumps
  • Pressure, flow, level, and quality instrumentation
  • Emergency Shutdown (ESD) interfaces

Subsystems

Inlet and Equalization System

Engineering of inlet manifolds, isolation valves, and equalization tanks to stabilize flow and pollutant loads, ensuring consistent operation of downstream treatment units.

Engineering of primary treatment systems to remove gross solids, free oil, and suspended contaminants from wastewater streams.

Engineering of biological treatment units to reduce organic pollutants and biodegradable contaminants, when required by discharge or reuse specifications.

Engineering of coagulation, flocculation, and clarification systems to enhance solids and contaminant removal.

Engineering of filtration and polishing stages to achieve final effluent quality targets for discharge, reuse, or reinjection.

Engineering of sludge collection, thickening, and dewatering systems to reduce waste volume and facilitate disposal.

Engineering of pumps and instrumentation to control flows, monitor performance, and detect abnormal conditions.

Engineering of ESD interfaces to ensure safe shutdown and isolation during abnormal or emergency conditions.

Engineering Approach

The engineering of wastewater treatment systems follows an integrated and environmentally driven design approach, focused on regulatory compliance, process reliability, and operational flexibility. Engineering activities begin with the definition of the design basis, including wastewater composition, flow variability, pollutant load, temperature, and discharge or reuse limits.
This approach ensures effective treatment, regulatory compliance, and long-term system reliability.

System Integration

Wastewater Treatment Systems are not standalone units, but integral components of the overall facility, managing wastewater streams safely under normal, upset, and emergency conditions.
This integrated design philosophy ensures that, when wastewater composition fluctuates or abnormal conditions occur, the system responds in a controlled, safe, and coordinated manner—protecting the environment and overall plant integrity.

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