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MARAFIQ / MaSa Clean water Team

MARAFIQ / MaSa Clean water Team. Wastewater Department. Wastewater Department : 2 separate networks (industrial and sanitary) 1 industrial plant (design capacity 96,700 m3/d) 1 sanitary plant (design capacity 144,000 m3 /d ). Manpower TP 8: Industrial

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MARAFIQ / MaSa Clean water Team

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  1. MARAFIQ / MaSa Clean water Team

  2. Wastewater Department • Wastewater Department : • 2 separate networks (industrial and sanitary) • 1 industrial plant (design capacity 96,700 m3/d) • 1 sanitary plant (design capacity 144,000 m3 /d ) Manpower TP 8: Industrial 4 shifts for operation (96 employees) 1 day shift for maintenance (48 employees) • Wastewater department: 479 employees Manpower TP 9: Sanitary 4 shift for operation (76 employees) 1 day shift for maintenance (52 employees) Aeration tank stage 2 lagoon lagoon Extension side

  3. Water cycle for Jubail Network collection Industrial and domestic consumption Jubail Water Open cycle Wastewater treatment plants Potable water plant Irrigation Return to the environment

  4. Wastewatertreatmentobjectives The main purpose of wastewater treatment is to remove harmful material from water and reuse it. Waste water water sludge Environment return Inlet wastewater TP8 Sludge production TP8

  5. Treatment Total 165, 000cu.m of wastewater on a daily basis, through physical, biological, and chemical treatment systems, to be reused or returned to Seawater Cooling Return Canal. There are two kinds of Wastewater Treatment Plants in Jubail Industrial City.Industrial Wastewater Treatment Plant and Sanitary Wastewater Treatment Plant

  6. Industrial Wastewater Network

  7. Key figures: 59 Km industrial network 623 km sanitary network 224 lifting stations 58 pumping stations PS10: pumping station

  8. Tp8 history • Stage 1 commissioning in 1983 RCER 1999 • Contact stabilization process, pressure filter and ozone treatment • Stage 2 commissioning in 1989 RCER 1999 • Settlement tank, activated sludge, pressure filter and chlorination • Stage 3 commissioning in 12/2012 RCER 2004 • Chemical and biological treatment • Stage 4 design phase RCER 2010 • Will be commissioned in 2017 RCER: Royal Commission Environment Regulation

  9. Primary and secondary industrial waste water network PS1 PS22 PS18

  10. RCER main inlet parameters – table 3B The regulations have changed to improve control on the quality of discharge to the environment!

  11. LAGOONS INLET Inlet works including flow distribution and oil retention facilities, floating oil skimmer and oil holding sump.

  12. AERATED LAGOONS Four aerated lagoons providing approximately five days retention equipped with floating surface aerators.

  13. PRELIMINARY TREATMENT Preliminary Treatment : • Screening • Grit removal The purpose of these units is to produce an approximately constant flow to the treatment units free from gross and abrasive material.

  14. PRIMARY SEDIMENTATION TANKS The wastewater enters the tanks through the central inlet pipe and leaves over the peripheral weir. The settled solids are removed from the base of the tanks as primary sludge, while grease, oil and floating solids are retained on the surface by baffles and removed with the scum.

  15. AERATION TANKS Activated sludge process and comprises three aeration tanks fitted with five fixed mechanical surface aerators per tank

  16. SECONDARY SETTLEMENT TANKS Secondary treatment comprises Aeration tanks, eight Final settling tanks, and three return activated sludge pumps.

  17. PRESSURE FILTERS Tertiary Filtration is necessary to effect sufficient suspended solids removal, and reduction of non-biodegradable organic compounds to produce a high quality effluent suitable for irrigation purposes.

  18. CHLORINE PLANT A chlorination system is installed to produce a residual concentration of this chemical.

  19. SLUDGE DEWATERING BELT PRESS The Sludge is first thickened in tanks where the supernatant liquors return to the upstream of the screens. The thickened sludge are passed to filter belt presses where additional moisture is removed by mechanical means after the addition of polyelectrolyte.

  20. DEWATERED SLUDGE CONVEYOR The sludge cake is transferred by a series of belt conveyors to storage bins prior to disposal at the Sanitary Landfill.

  21. RCER reclaimed water outlet main parameters – table 3D Among the best quality irrigation water in the world!

  22. General Information about IWTP-8 Design Criteria for Stage-2 : Daily Average flow 41,700 m3/d Design Criteria for Stage-3 : Daily Average flow 55,000 m3/d Stage 3 has additional capacity to treat higher level of pollution.

  23. TP8 process general view Industrial pumping station Daily average flow 7 lagoons (3 in operation) Daily average flow 25 000 m3/day Treatment capacity 41,700m3/day Treatment capacity 55,000m3/day clarifiers Effluent pumping station To environment

  24. TP8 process Diagram

  25. Stage 2, existing biological treatmentRCER 1999 Intermediatefilter Inlet chlorination Design capacity 41,700m3/day Process equipment: SST Pretreatment outlet Tertiaryfilter PST Aeration tank Waste water Sludge Treated water Sludgetreatment • Primary settlement tank PST (natural settlement) • Classic biological process with surface aerator and blower. • Secondary settlement tank SST (natural settlement) • Tertiary filter • Chlorination (chemical disinfection) • 4 belt presses to treat sludge production (chemical polymer used)

  26. Stage 3 new bio/chemical treatmentRCER 2004 Equalization tank GAC Pre-treatment Fenton Inlet Outlet Commissioning completed: 22/12/12 Process equipment: DAF Aeration tank Chlorination Primarytreatment MMF Waste water sludge Treated water Sludgetreatment • Design capacity: 55000m3/day • Coagulation flocculation • (chemical reaction for settlement) • Aeration tank by diffusor fine bubble • Dissolved air flotation (DAF) • (chemical reaction for coagulation) • Fenton reactor • (chemical oxidation) • Multi Media Filter (MMF) • Granular Activated Carbon (GAC) • (chemical adsorption) • Chlorination • (chemical disinfection) • One additional belt press to enhance the sludge treatment capacity

  27. Additional value of stage 3 Chemical treatment: • Primary treatment with coagulation / flocculation • Dissolved air flotation • Fenton • Granular Activated Carbon filter time Coagulation / flocculation process Stage 3 DAF

  28. Quality monitoring and Control To provide the best services and continuity, MaSa performs more than 500 analyses each day to meet RCER and ensure that stringent water quality standards are met at all times. Total Organic Carbon analyzer TP8 control room TP8 laboratory (Potable water, Waste water, Sea water cooling) RCER: Royal Commission Environmental Regulations

  29. Wastewater Department Better customer services strategy: • Work more closely with our customer • to produce better reclaimed water • to be proactive to your needs • to support your pretreatment requirement • Increase the automatic monitoring and control of daily operation and maintenance • Installing new online analyzers • Enhance real time data reporting to the Cockpit Performance O&M (CPO)

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