Oil and Gas Engineering Training Courses

Oil Refinery & Petrochemical Industry Wastewater Treatment


Petroleum refining and petrochemical industries unavoidably generate large volumes of wastewater. As environmental regulations for wastewater disposal are getting stricter, and freshwater resources are becoming increasingly limited, the industry requires more efficient management and reuse of this wastewater. Therefore, wastewater treatment must be explored and resolved by every oil refinery and petrochemical company.

This course will identify how to get to the core of this issue using thorough analysis of the development status of wastewater treatment methods including flotation, coagulation, biological treatment, membrane separation technology, combined technology and advanced oxidation process that ultimately results in maximization of petroleum refining and petrochemical industries profitability and meeting with the strict environmental regulations. Participants will learn several configurations and techniques for Wastewater Treatment Plants (WWTP) in oil refining and petrochemical industries

Targeted Groups:

  • Refinery and Petrochemical Plant Managers
  • Process Engineers and Technologists involved in wastewater treatment facilities
  • Maintenance Engineers
  • Plant Engineers
  • Operations Personnel including Shift Supervisors
  • All Professionals involved in wastewater treatment facilities
  • Other Engineers who would like to have a further understanding of the wastewater treatment technology
  • Anyone who wishes to update himself on the methods used in this important field

Course Objectives:

At the end of this course the participants will be able to:

  • Learn the purpose, principles of operation and limitations of the different wastewater treatment technologies in oil refining and petrochemical industries
  • Understand how to establish high recovery of wastewater for reuse onsite, reducing freshwater intake and meeting strict regulatory requirements
  • Understand the advanced cost-effective technologies for the reduction of waste volume and obtain Zero Liquid Discharge (ZLD)
  • Learn how to reduce the energy consumption and operational costs of the wastewater treatment facilities and optimize treatment conditions
  • Learn industry-standard targets for wastewater before discharge or reuse
  • Identify the impact of pollution on the environment
  • Modify treatment facilities operating conditions according to the properties of incoming polluted wastewater
  • Improve the operability and reliability of equipment

Targeted Competencies:

  • Typical sources and contaminants of wastewater produced from oil refining and petrochemical industries
  • Refinery and petrochemical Wastewater Treatment Plants (WWTP) impacts and benefits
  • Conventional refinery and petrochemical wastewater treatment plants
  • Current development status of wastewater treatment technologies
  • Latest on wastewater recycle / reuse for oil refining and petrochemical industries (ZLD)

Course Content:
Unit 1: Refinery and Petrochemical Plant Overview:

  • Raw Materials
  • Product and Processes
  • Refinery Configuration

Unit 2: Water and Wastewater Management:

  • Refinery Water Overview
  • Overall Refinery Water Balance
  • Sources of Water
  • Water Leaving the Refinery
  • Raw Water Treatment
  • Process Water
  • Best Practices for Managing Refinery and Petrochemical Plant WWTP

Unit 3: The Composition of Wastewater:

  • Aquatic Biology
  • Six Important Elements
  • Biochemical Oxygen Demand
  • Chemical Oxygen Demand (COD)
  • COD and BOD5 Equivalence for Hydrocarbons
  • Hydrocarbons (HC) in Water

Unit 4: Effluent Treatment:

  • Unit Processes in Wastewater Treatment
  • Process Wastewater Pretreatment
  • Desalter Effluent Treatment
  • Desalter Oil / Water Separation
  • Desalter Effluent VOC Control
  • Particle Settling
  • Ideal Sedimentation
  • First Stage: Separation (Oil / Water Separators, API Separators, CPI)
  • Oil Skimming Device

Unit 5: Biological Treatment:

  • Coagulation / Flocculation
  • Dissolved Air Flotation (DAF)
  • Induced Air Flotation (IAF)
  • Equalization System
  • Secondary Treatment / Biological Treatment
  • Activated Sludge
  • Sludge Volume Index
  • Activated Sludge Troubles and Remedial Actions
  • Aerators
  • Biological Treatment Options
  • Activated Sludge Treatment with Powdered Activated Carbon

Unit 6: Biological Treatment Options:

  • Oxidation Ditch
  • Aerated Lagoons
  • Powdered Activated Carbon Treatment
  • Sequencing Batch Reactor (SBR)
  • Membrane Bioreactor Technology
  • Attached Growth Processes
  • Biological Clarification Gravity Clarifiers
  • Sand Filtration
  • Activated Carbon
  • Chemical Oxidation

Unit 7: Sludge Treatment:

  • Sewage Sludge Quantity and Characteristics
  • Sludge Pumping Systems
  • Thickening / Dewatering of Sludge
  • Dimensioning of a Static Thickener
  • Dewatering
  • Treatment of Sludge's
  • API Separator — Bottom Sludge
  • Bioremediation
  • DGF/IGF Float and Sludge
  • Waste Biological Sludge
  • Sludge Stabilization
  • Simultaneous Aerobic Stabilization
  • Mesophilic Anaerobic Digestion
  • Aerobic Digestion
  • Sludge Disposal and Agricultural Utilization

Unit 8: Recycle and Reuse Issues:

  • Re-use of Non-contaminated Stormwater
  • Fire-Water
  • Cooling Tower Makeup Water
  • Utility Water
  • Boiler Feedwater Makeup
  • Technologies for Upgrade of Refinery Wastewater
  • Basic Media / Sand Filtration
  • Microfiltration or Ultrafiltration
  • Microfiltration or Ultrafiltration, with Reverse Osmosis
  • Microfiltration or Ultrafiltration, with Nanofiltration
  • Ion Exchange
  • Technology Summary

Unit 9: Refinery Wastewater Reuse:

  • Reuse of Municipal Wastewater
  • Media Filtration
  • Microfiltration or Ultrafiltration
  • Microfiltration or Ultrafiltration, plus Reverse Osmosis
  • Zero Liquid Discharge

Oil and Gas Engineering Training Courses
Oil Refinery & Petrochemical Industry Wastewater Treatment (EO)


Mercury dynamic schedule is constantly reviewed and updated to ensure that every category is being addressed at least once a month, if not once every week. Please check the training courses listed below and if you do not find the subject you are interested in, email us or give us a call and we will do our best to assist.