The document describes five sewerage treatment plants and desalination plants located in Saudi Arabia and Pakistan. It provides location details, design specifications, and photos of the Dammam City Sewerage Treatment Plant and Al-Khobar City Sewerage Treatment Plant in Saudi Arabia. Both plants originally used lagoon treatment systems before switching to activated sludge processes. Photos show the inlet structures, aeration tanks, clarifiers, and other infrastructure at the sites.

1. WORK AREAS
• Sewerage Treatment Plants
• Desalination Plants
Appendix-I Dammam City Sewerage Treatment Plant, Eastern
Province, Kingdom of Saudi Arabia.
Appendix-II Al-Khobar City Sewerage Treatment Plant, Eastern
Province, Kingdom of Saudi Arabia.
Appendix-III Al-Azizia Desalination Plant, Al-Khobar, Eastern
Province, Kingdom of Saudi Arabia.
Appendix-IV Al-Jubail Desalination Plant, Al-Jubail, Eastern
Province, Kingdom of Saudi Arabia.
Appendix-V PTA Combined Effluent Treatment Plant, Korangi
Tanneries, Korangi Industrial Area, Karachi
Pakistan.

2. Appendix-I
Appendix-I-1
DAMMAM CITY SEWERAGE TREATMENT PLANT
Eastern Province, Saudi Arabia
Broader view
260 10’ 39.06’’ N
500 12’ 35.54’’ E
Inlet Structure =1
Aeration Tanks (Carousels) = 8
Clarifiers=8
Sludge Thichners =2
Screw Pump Stations = 4
Sea out-fall discharges = 250,000 m3/day Discharge BOD Loadings: 20-25mg/l O2
• Wastewater Treatment by Aeration Lagoons aborted since 1982-83 . The
plant was designed and constructed by Ballast BV of Netherlands.
• Advance Wastewater Treatment by Activated Sludge System was
commissioned in late 1982 which was designed and constructed by Metcalf
and Eddy Incorp, Waikfield, Mass, USA.

3. Appendix-I-2
DAMMAM SEWERAGE TREATMENT PLANT
Eastern Province, Saudi Arabia
260 10’ 39.06’’ N
500 12’ 35.54’’ E
Bird Eye view
STP Dammam
• Wastewater Treatment by Aeration Lagoons aborted since 1982-83 . The
plant was designed and constructed by Ballast BV of Netherlands.
• Advance Wastewater Treatment by Activated Sludge System was
commissioned in late 1982 which was designed and constructed by Metcalf
and Eddy Incorp, waikfield, Mass, USA.

4. Appendix-I-3
DAMMAM SEWERAGE TREATMENT PLANT
Eastern Province, Saudi Arabia
260 10’ 39.06’’ N
500 12’ 35.54’’ E
Tertiary Wastewater Treatment
Largest continuous flow Sand Filtration Facility in the world
Recently Equipped with 216 DynaSand® filters, will make Dammam the world's
largest continuous operated sand filter plant for tertiary treatment.

5. Appendix-I-4
DAMMAM SEWERAGE TREATMENT PLANT
Eastern Province, Saudi Arabia
260 10’ 39.06’’ N
500 12’ 35.54’’ E
Lagooning System of Wastewater Treatment
Aborted 1982-83
Sea Out-fall discharges = 200,000m3/day (before 1983)
Average BOD loading = 20 -25mg/litre O2
Aborted Lagoons

6. Appendix-I-5
DAMMAM SEWERAGE TREATMENT PLANT
Eastern Province, Saudi Arabia
260 10’ 39.06’’ N
500 12’ 35.54’’ E
Front view of Plant
Right corner Jubail-Ras Tanura Highway
Sea Out-fall Discharges = 250,000m3/day
Average BOD discharge loading = 20 -25mg/litre O2
• Wastewater Treatment by Aeration Lagoons aborted since 1982-83 . The
plant was designed and constructed by Ballast BV of Netherlands.
• Advance Wastewater Treatment by Activated Sludge System was
commissioned in late 1982 which was designed and constructed by Metcalf
and Eddy Incorp, waikfield, Mass, USA.

7. Appendix-I-6
DAMMAM CITY SEWERAGE TREATMENT PLANT
Eastern Province, Saudi Arabia
260 10’ 39.06’’ N
500 12’ 35.54’’ E
Sludge Drying Beds
Left corner
Sludge Drying Beds Aeration Tanks

8. Appendix-II
Appendix-II-1
AL-KHOBAR CITY SEWERAGE TREATMENT PLANT
Eastern Province, Saudi Arabia
260 14’ 48.27’’ N
500 12’ 33.20’’ E
BROADER VIEW
Inlet Structure =1
Aeration Tanks (Carousels) = 6
Clarifiers=6
Sludge Thichners =2
Screw Pump Stations = 3
Sea Out-fall Discharges = 150,000m3/day
Average BOD discharge loading = 20 -25mg/litre O2

9. AL-KHOBAR SEWERAGE TREATMENT PLANT
Eastern Province, Saudi Arabia
Appendix-II-2
0 ’ ’’
26 14 48.27 N
500 12’ 33.20’’ E
Lagooning System of Wastewater Treatment
Aborted 1982-83
Sea Out-fall Discharges = 120,000m3/day (before 1983)
Average BOD discharge loading = 20 -25mg/litre O2

10. AL-KHOBAR SEWERAGE TREATMENT PLANT
Eastern Province, Saudi Arabia
Appendix-II-3
0 ’ ’’
26 14 48.27 N
500 12’ 33.20’’ E
Zoom-in View
Sea Out-fall Discharges = 150,000m3/day
Average BOD discharge loading = 20 -25mg/litre O2
Aborted Lagoons
Sludge Thickner
Screw Pump Station Aeration Tanks
Final Clarifier

11. AL-KHOBAR SEWERAGE TREATMENT PLANT
Eastern Province, Saudi Arabia
Appendix-II-4
0 ’ ’’
26 14 48.27 N
500 12’ 33.20’’ E
Sludge Drying Beds
Sea Out-fall Discharges = 150,000m3/day
Average BOD loading = 20 -25mg/litre O2
Sludge Drying Beds

12. AL-KHOBAR SEWERAGE TREATMENT PLANT
Eastern Province, Saudi Arabia
Appendix-II-5
260 14’ 48.27’’ N
500 12’ 33.20’’ E
FRONT VIEW
Inlet Structure =1
Aeration Tanks (Carousels) = 6
Clarifiers=6
Sludge Thichners =2
Screw Pump Stations = 3
Clarifiers
Aeration Tanks (Carousels)
Sea Out-fall Discharges = 150,000m3/day
Average BOD discharge loading = 20 -25mg/litre O2