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MBBR PRESENTATION

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MBBR PRESENTATION

  1. 1. A WARM WELCOMEA WARM WELCOME FORFOR SHAPOORJI PALLONJI ENGINEERS CONSTRUCTION EVERY DROP COUNTS A PRESENTATION ONA PRESENTATION ON SEWAGE TREATMENT PROCESSSEWAGE TREATMENT PROCESS
  2. 2. • Compact Plants - OccupyCompact Plants - Occupy Minimum Space.Minimum Space. • Less O&M CostLess O&M Cost • Less Manpower requirementLess Manpower requirement • No Odour Nuisance.No Odour Nuisance. • Flexibility for futureFlexibility for future ExpansionExpansion • Minimal Sludge Handling.Minimal Sludge Handling. • Easy To Use & Operate.Easy To Use & Operate.
  3. 3. WASTE WATERWASTE WATER CONTAININGCONTAINING CONTAMINANTSCONTAMINANTS BACTERIABACTERIA HARMLESS ENDHARMLESS END PRODUCTSPRODUCTS CO2 + H2O + NEW BACTERIA CH4 + H2O + NEW BACTERIA PRESENCE OF O2 ABSENCE OF O2 AEROBIC ANAEROBIC THE PROCESSTHE PROCESS
  4. 4. • Most Ideal Solution • Large Land Requirement However • Routing pipelines through congested areas of the city. • Digging up of roads for laying of pipelines. • Construction of bridges for conveying pipelines across the river, if any • Setting up Sewage pumping stations Massive Investment Required for
  5. 5. • Investment for laying of pipelines avoided. • Investment in setting up pumping stations minimized. • Reduced cost of operations due to absence of pumping. • Treatment as close as possible to source of generation. • Better flexibility to cater to future expansions.
  6. 6. • pHpH • O & GO & G • B.O.D.B.O.D. • C.O.D.C.O.D. • T.S.S.T.S.S. • : 6 - 9: 6 - 9 • : 50 mg/l: 50 mg/l • : 200-275 mg / l: 200-275 mg / l • : 550-600: 550-600 mg / lmg / l • : 350-450 mg / l: 350-450 mg / l
  7. 7. • PhPh • O & G (mg / l )O & G (mg / l ) • B.O.D. (mg / l)B.O.D. (mg / l) • C.O.D. (mg / l)C.O.D. (mg / l) • T.S.S. (mg / l)T.S.S. (mg / l) • PhPh • O & G (mg / l )O & G (mg / l ) • B.O.D. (mg / l)B.O.D. (mg / l) • C.O.D. (mg / l)C.O.D. (mg / l) • T.S.S. (mg / l)T.S.S. (mg / l) 6-96-9 < 10< 10 < 30< 30 < 100< 100 < 50< 50 6-96-9 < 10< 10 < 30< 30 < 100< 100 < 50< 50 6.5 - 8.56.5 - 8.5 < 5< 5 < 10< 10 < 100< 100 < 10< 10 6.5 - 8.56.5 - 8.5 < 5< 5 < 10< 10 < 100< 100 < 10< 10 PARAMETER NORMS FOR DISPOSAL FOR RECYCLE For Disposal To On Land Water Bodies Gardening.
  8. 8. Operational Requirements of a WastewaterOperational Requirements of a Wastewater Management SystemManagement System Meet CPCB / SPCB / WHO NormsMeet CPCB / SPCB / WHO Norms Meet Coliform Count after TreatmentMeet Coliform Count after Treatment Low Foot Print AreaLow Foot Print Area Flexible in operation : Should accept varyingFlexible in operation : Should accept varying loadsloads Easy to Operate & MaintainEasy to Operate & Maintain No smell / odourNo smell / odour
  9. 9. SEWAGESEWAGE TERTIARY TREATMENT RECYCLE DISPOSAL For Removal Of SS, Oil etc. For Removal Of SS, Oil etc. For Reduction Of BOD, COD etc. For Reduction Of BOD, COD etc. PRIMARY TREATMENT Physical Treatment Screening, Oil & Grease Removal SEC. TREATMENT Biological Treatment Polishing Units Dual Media Filter Activated Carbon Filter
  10. 10. EVOLUTION OF TECHNOLOGYEVOLUTION OF TECHNOLOGY • Oxidation PondsOxidation Ponds • Anaerobic Systems (UASB/AF etc.)Anaerobic Systems (UASB/AF etc.) • Aerobic ProcessesAerobic Processes – Suspended Growth : (ASP & Variants)Suspended Growth : (ASP & Variants) – Attached Growth ProcessesAttached Growth Processes • S A F FS A F F -- FLUIDISED BED REACTORFLUIDISED BED REACTOR (MBBR)(MBBR)
  11. 11. • Natural Mode Of Treatment.Natural Mode Of Treatment. • Large area requirement.Large area requirement. • Odour Nuisance Likely.Odour Nuisance Likely. • Consumes Power For Pumping Sewage Out OfConsumes Power For Pumping Sewage Out Of The City.The City. • Complete Treatment Cannot Be Guaranteed.Complete Treatment Cannot Be Guaranteed. • Expected Project Schedule - 1 - 2 YearsExpected Project Schedule - 1 - 2 Years
  12. 12. INFLUENT EQUALISATION TANK AERATION LAGOON TREATED EFFLUENT UASB - I UASB - II SLUDGE DRYING BED
  13. 13. • Up flow Anaerobic Sludge Blanket Reactor.Up flow Anaerobic Sludge Blanket Reactor. • No Aeration Device Required.No Aeration Device Required. • Odour nuisanceOdour nuisance • Sensitive To Fluctuations / Shock Loads.Sensitive To Fluctuations / Shock Loads. • Calls For Adequate Post Aeration To MeetCalls For Adequate Post Aeration To Meet The Norms.The Norms. • Regular Skilled Monitoring - Essentiality.Regular Skilled Monitoring - Essentiality. • Long Start Up Time : 3 - 4 MonthsLong Start Up Time : 3 - 4 Months • Restart Time : Minimum 1 MonthRestart Time : Minimum 1 Month
  14. 14. INFLUENT EQUALISATION TANK TREATED EFFLUENT + + + + SLUDGE DRYING BEDS AERATION TANK SEC. CLARIFIER SLUDGE RECYCLE SURFACE AERATOR
  15. 15. ACTIVATED SLUDGE PROCESSACTIVATED SLUDGE PROCESS RECYCLED SLUDGE SETTLING TANK AERATION TANK AERATORS TREATED EFFLUENT AFTER PRIMARY TMT. SLUDGE FOR TREATMENT / DISPOSAL F / M ? M . L . S . S . ? DISSOLVED OXYGEN ? PUMPING COST RECYCLED SLUDGE % ? F / M : FOOD TO MICRO-ORGANISM RATIO M.L.S.S. : MIXED LIQUOR SUSPENDED SOLIDS
  16. 16. INHERENT PROBLEMSINHERENT PROBLEMS • HIGH OPERATING COSTS • COMPLEX MECHANICAL EQUIPMENTS • SKILLED PROCESS OPERATIONS • LARGE QUANTITY OF DIFFICULT TO HANDLE SLUDGE PRODUCED • SUSCEPTIBLE TO SHOCK LOADS • CONTINUOUS POWER SUPPLY REQUIRED
  17. 17. SCRENNING & EQUALISATION RAW SEWAGE V V V V V V V V V V V V V V V V V M M SAFF REACTOR AIR BLOWERS AIR DIFFUSERS FIXED MEDIA SAFF TREATMENT SYSTEMSAFF TREATMENT SYSTEM SLUDGE DRYING BEDS SLUDGE (OPTIONAL) FILTER PRESS CHLORINATION TREATED SEWAGE TUBESETTLER
  18. 18. BASED ON PRINCIPAL OF MOVING BED ATTACHED GROWTH
  19. 19. FBR ……….FBR ………. • has media which supports thehas media which supports the biomass.biomass. • The media is in suspension, sinceThe media is in suspension, since the specific gravity of the mediathe specific gravity of the media is less than that of water.is less than that of water. • The fluidization of the mediaThe fluidization of the media takes place by current set bytakes place by current set by aeration.aeration.
  20. 20. VVVVVV VVVVVV M M REACTOR - I REACTOR - II AIR BLOWERS AIR DIFFUSERS FLOATING MEDIA FBR TREATMENT SYSTEMFBR TREATMENT SYSTEM SLUDGE DRYING BEDS SLUDGE (OPTIONAL) FILTER PRESS CHLORINATION TREATED SEWAGE TUBESETTLER TERTIARY TREATMENT Oil & Grease trap Equalization Cum Collection Tank SCREEN V V V V V V
  21. 21. A) EQUALISATION TANKA) EQUALISATION TANK THE OBJECTIVETHE OBJECTIVE • Dampen / absorb the effluent flow rate variations. • Keep the effluent in mixed condition to obtain homogenous characteristics. TO ENSURETO ENSURE Desired treatment efficiency of the down line system.
  22. 22. A) EQUALISATION TANKA) EQUALISATION TANK VVVVVVV RAW SEWAGE BAR SCREEN CHAMBER AIR GRID EQUALISATION TANK AIR BLOWER M M FEED PUMPS
  23. 23. FLUIDISEDFLUIDISED BEDBED REACTORREACTOR (MBBR)(MBBR)
  24. 24. FEATURESFEATURES FROM PRIMARY FB REACTOR-I A) TWO REACTORS IN SERIESA) TWO REACTORS IN SERIES FB REACTOR-II
  25. 25. FEATURESFEATURES SEWAGE INLET SEWAGE OUTLET B) NO SHORT CIRCUITINGB) NO SHORT CIRCUITING
  26. 26. FEATURESFEATURES SEWAGE INLET C) COUNTER CURRENT FLOWC) COUNTER CURRENT FLOW AIR DISTRIBUTION GRID V V V V SEWAGE AIR
  27. 27. FEATURESFEATURES D) ENHANCED OXYGEN TRANSFERD) ENHANCED OXYGEN TRANSFER V V V V V V V V REACTOR WITHOUT CARRIER ELEMENTS REACTOR WITH CARRIER ELEMENTS AIR BUBBLES
  28. 28. FEATURESFEATURES F) NO SLUDGE RECYCLINGF) NO SLUDGE RECYCLING FB REACTOR-I FB REACTOR-II
  29. 29. AEROBIC / ANAEROBIC & FACULTATIVE LAGOONS FB REACTORFB REACTOR OXIDATION DITCH COMPARATIVE AREA REQUIREMENTS ASP SAFF REACTOR FB REACTOR
  30. 30. Specific Advantages of FBR overSpecific Advantages of FBR over other processesother processes • Very low area requirement : Approx. 1/10thVery low area requirement : Approx. 1/10th That Of Conventional ProcessesThat Of Conventional Processes • High treatment efficiency.High treatment efficiency. • Digested Sludge - No Sludge Treatment Reqd.Digested Sludge - No Sludge Treatment Reqd. • Ease Of Operation & Maintenance - MinimumEase Of Operation & Maintenance - Minimum Manpower.Manpower. • Quick re-start after prolonged shut-downsQuick re-start after prolonged shut-downs – typically after 1 week shut down, re-start time istypically after 1 week shut down, re-start time is only 12 hours.only 12 hours.
  31. 31. HAVE A NICE DAY THANK YOU ALLTHANK YOU ALL Let us allLet us all make A Green Earthmake A Green Earth

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