Saudi Aramco Efforts in Oily Wastewater Treatment and Reuse

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1 Saudi Aramco Efforts in Oily Wastewater Treatment and Reuse Thamer Almutairi Wastewater Management & Water Conservation Unit Environmental Protection Department Saudi Aramco: Company General Use 1

2 Environmental Stewardship Workshop Outline Background Saudi Aramco Wastewater Generation Saudi Aramco Standards & Regulations Typical Oily Wastewater Treatment Technologies Oily wastewater Reuse Saudi Aramco Wastewater Re-use Plans Conclusions

3 Water Resources in Saudi Arabia Groundwater is Valuable in Saudi Arabia

4 Renewable Freshwater Resources In Kingdom Saudi Aramco: Company General Use

5 Environmental Stewardship Workshop Types & Sources of Wastewater Industrial Wastewater Tank Deballasting Processing Process Area Rain Runoff Plant Rejects Sour Water Cooling Water Hydrotest Water Tank Bottoms Wastewater Associated Water Desalter Water Other Domestic Activities Kitchens Laundry Toilets Saudi Aramco: Company General Use Sanitary Wastewater

6 Environmental Stewardship Workshop Wastewaters Generation Rates - Saudi Aramco is generating over 31 MMCMY of oily water sewer effluents - Saudi Aramco is generating over 47 MMCMY of sanitary wastewater

7 Environmental Stewardship Workshop Saudi Aramco Standards SAES-A-104 Wastewater Treatment, Reuse and Disposal GI Saudi Aramco Sanitary Code Section # 2 GI Water Conservation (Under Approval) SAES-A-120 Regulated Vendors List for Wastewater Treatment Equipment Wastewater Equipment SAMSS (Under Development) Saudi Aramco: Company General Use

8 Environmental Stewardship Workshop What is the Company doing? Effective Wastewater Treatment and Disposal Implementing a Water Conservation Program

9 Typical Oily Wastewater Treatment System Raw Influent Screening Grit Removal Primary Oil Water Separation Primary Oil/Water Separator Removal of large amount of oil and suspended solids from wastewater. Effluent requirements are typically ppm oil and TSS. API Separator Most Common CPI Separator

10 Typical Oily Wastewater Treatment System Raw Influent Screening Grit Removal Primary Oil Water Separation Secondary Oil / Water Separation Secondary Oil/Water Separation Treatment Objectives Treatment objective is typically 30 to 5 ppm oil, dependent upon discharge requirements, or downstream treatment processes. Dissolved Air/Gas Flotation Separator (DAF or DGF Separators) Most Common-pre-dissolves Gas in Wastewater- Induced Air/Gas Flotation Separator (IAF or IGF Separators) Gas is Dispersed into Small Bubbles in Wastewater. Walnut Shell Filter Least Common

11 Typical Oily Wastewater Treatment System Raw Influent Screening Grit Removal Primary Oil Water Separation Secondary Oil / Water Separation Equalization Tank Wastewater Equalization Tank Smooth out variations in flow and contaminants Minimize hydraulic shock loading to process equipment

12 Typical Oily Wastewater Treatment System Raw Influent Screening Grit Removal Primary Oil Water Separation Secondary Oil / Water Separation Equalization Tank Biological Treatment Biological Treatment In this process bacteria will react with Organic Chemicals and Nutrients in Oxygen present to produce Carbon Dioxide and Cell Mass. Conventional Activated Sludge MBR MBBR

13 Typical Oily Wastewater Treatment System Raw Influent Screening Grit Removal Primary Oil Water Separation Secondary Oil / Water Separation Equalization Tank Biological Treatment Tertiary Treatment Treated Effluent Further Treatment Tertiary Treatment Typical Applications Provide additional treatment to meet strict wastewater discharge requirements. Provide additional treatment to allow wastewater to be reused. Typical Treatment Methods Filtration Membranes Activated Carbon

14 Reuse New High Tech Industrial Reuse Combine Sanitary & Oily Wastewater API & Walnut Shell Filters MBR Treatment Further Reuse Saudi Aramco: Company General Use

15 Wastewater Treatment Water Uses Sanitary WW MBR Irrigation RO Reject Raw Water Boiler Blowdown Blending Cooling Tower Make-up Cooling Tower Blowdown Fire Water Make-up Oily Wastewater Partial Treatment Previous Plan Marine Disposal

16 Sanitary WW Irrigation Sour Water Stripper Boiler Blowdown Walnut Shell Filters MBR Boiler Feed Water Fire Training Wastewater Oily Wastewater Marine Disposal

17 Oil Field Pressure Maintenance Production Well GOSP s Treatment Pressure Maintenance Treatment to Control Oil & TSS in 100 ppm

18 Saudi Aramco Research Outcome EcoRight technologies: New Patent Biological treatment system for oily wastewater It is a next generation carbon-assisted biological treatment system incorporating the use of granular activated carbon (GAC) in the aeration tank(s). Saudi Aramco: Company General Use

19 Saudi Aramco New Projects Raw Influent Full Treatment RO Plants Industrial Applications Refineries Projects Oily Wastewater system Upgrade Saudi Aramco: Company General Use

20 Environmental Stewardship Workshop Wastewater Reuse Plans Implement the New Water Conservation GI Implement the Groundwater Equation Value to new project Oily Sewer Effluents Reuse Oil Field Pressure Maintenance Process Utility Water

21 Environmental Stewardship Workshop Conclusions The Company goal is to conserve valuable water resources. The Company uses state-of-the-art processes to treat industrial and sanitary wastewater. Typical Oily Wastewater Treatment Technologies for reuse New Patent as outcome from the Company researches Implement the Water Conservation Program

22 Environmental Stewardship Workshop Thank you