The document provides details of a sewage treatment plant project in Al Haer, Saudi Arabia. It summarizes that the project involves building a sewage treatment plant with a capacity of 640,000 cubic meters per day to treat raw sewage from the area. It is being constructed by Aziz Company Ltd. over a 4 year period and includes various treatment units and auxiliary buildings. Progress photos show ongoing construction and status updates are provided.
5. Description Of The ProjectDescription Of The Project
Proposed Sewage Treatment Plant Phase-I, is located at southProposed Sewage Treatment Plant Phase-I, is located at south
of Riyadh in Al Haer district. Present contract is to build theof Riyadh in Al Haer district. Present contract is to build the
STP Phase-I withSTP Phase-I with capacity 640,000mcapacity 640,000m³³/day/day (168 MGD) peak(168 MGD) peak
flow andflow and 400,000m400,000m³³ /day/day (105 MGD) average flow.(105 MGD) average flow.
MainMain contractorcontractor isis “Aziz Company Ltd.”“Aziz Company Ltd.” And he isAnd he is
responsibleresponsible toto design, construct, operate & maintaindesign, construct, operate & maintain the plantthe plant
forfor one yearone year..
STP – Al Haer – Presentation:
7. Treated Effluent After Secondary Treatment:Treated Effluent After Secondary Treatment:
B.O.D5B.O.D5 < 20 mg/L (Monthly Average)< 20 mg/L (Monthly Average)
S.S.S.S. < 20 mg/L (Monthly Average)< 20 mg/L (Monthly Average)
Total NitrogenTotal Nitrogen < 20 mg/L (Monthly Average)< 20 mg/L (Monthly Average)
Fecal ColiformFecal Coliform <2.2 MPN per 100 ml<2.2 MPN per 100 ml
Treated Effluent After Tertiary Treatment:Treated Effluent After Tertiary Treatment:
B.O.D5B.O.D5 < 10 mg/L< 10 mg/L
S.S.S.S. < 10 mg/L< 10 mg/L
NitrogenNitrogen < 10 mg/L< 10 mg/L
Fecal ColiformFecal Coliform <2.2 MPN per 100 ml<2.2 MPN per 100 ml
STP – Al Haer – Presentation:
8. Sewage Treatment Units:
Inlet lift pump station with coarse screens etc
Pre-aeration Tank
Grit and Grease Removal Tank
Parshall Flumes
Selector Tanks
Aeration Tanks (Carousel Bio-reactor)
Final Settling Tanks
Tertiary Treatment Plants
Chlorination Building
Return Activated Sludge Pump Station
Waste Activated Sludge Pump Station, Sludge Thickeners
Sludge Dewatering Building Including Sludge Decanters, Sludge Dryer etc.
Sludge Silo and Conveying System
Odour Control Unit
Process Pipe Work and Chambers etc.
STP – Al Haer – Presentation:
9. Auxiliary Building & Other Works:Auxiliary Building & Other Works:
Control BuildingControl Building
Generator BuildingGenerator Building
Electrical SubstationsElectrical Substations
Mosque, Workshop, Cafeteria & Health CentreMosque, Workshop, Cafeteria & Health Centre
Administration and Laboratory BuildingAdministration and Laboratory Building
Road WorksRoad Works
Irrigation and Plantation etc.Irrigation and Plantation etc.
Fire Fighting Pipe Networks and Hydrants etc.Fire Fighting Pipe Networks and Hydrants etc.
STP – Al Haer – Presentation:
11. Sewage Treatment Plant – Phase ISewage Treatment Plant – Phase I
Al HaerAl Haer
General Information:General Information:
STP – Al Haer – Presentation:
General InformationGeneral Information
Contract ValueContract Value SR- 293,432,279.00SR- 293,432,279.00
Project Start DateProject Start Date 18.10.142818.10.1428
Project Finish DateProject Finish Date 17.10.143217.10.1432
Execution PeriodExecution Period 4 Years4 Years
%age of Contract Period%age of Contract Period
Finished on (29.02.1432 H)Finished on (29.02.1432 H)
84.18 %84.18 %
12. STP – Al Haer – Presentation:
Cont’dCont’d
Value of revised masterValue of revised master
programme upto Safar 1432Hprogramme upto Safar 1432H
SR- 293,432,279.00SR- 293,432,279.00
%age of revised master%age of revised master
Programme upto Safar 1432H.Programme upto Safar 1432H. 72.23%72.23%
Total value of works executedTotal value of works executed
upto Safar 1432H (Estimated)upto Safar 1432H (Estimated) SR. 120,832,941.60SR. 120,832,941.60
% age of total works executed% age of total works executed 41.18 %41.18 %
% age of Civil Works Executed% age of Civil Works Executed 64.14 %64.14 %
% age of Mech. Works% age of Mech. Works
ExecutedExecuted
33.71 %33.71 %
% age of Elect. Works% age of Elect. Works
ExecutedExecuted
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