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DM Plant induction.pptx
- 1. R.K.M Powergen Private Limited Induction Report Submitted By: Fanendra Dewangan Senior Engineer Dept:Control & Instrumentation
- 2. Water Cycle for DM Water • Source of Raw Water – Sara di River (24KM) • Raw Water Reservoir • Stilling Chamber • Distribution Chamber • Clarifier HRSCC • Gravity Sand Filter • Basket Filter • Ultra-Filtration • Micron Cartridge Filter • High Pressure Pump • Reverse Osmosis • Degasser Tank • Mixed Bed • DM Water Storage Tank
- 3. Water Storage Facility • Raw Water Reservoir • Quantity : 1 Nos • Capacity : 46000 M3
- 4. Design Raw Water Quality S.No Parameter Units Result 1 pH --- 8.40 2 Conductivity µs/cm 335 3 Total Dissolved Salts ppm 201 4 Total Suspended Salts ppm 200 5 Turbidity NTU 200 6 Alkalinity ppm 74 7 Chloride ppm 30 8 Silica ppm 11 9 Colloidal Silica ppm 33 10 Sulphate ppm 29 11 Sodium ppm 21 12 Magnesium ppm 21 13 Calcium ppm 47 14 Iron ppm 2
- 5. Plant Cycle Raw water Cascade Aeerator Stilling chamber Parshali Flume chamber Gas chlorination Poly+Fecl3 Dossing DM Clariifier Non-DM Clariifier
- 6. Non DM Water Cycle Clarifier(HRSCC) -2nos GSF-10nos Filter Storage Tank
- 7. DM Water Cycle Filter Storage Tank UF UF Tank MCF Dossing=Anti Scalant+SMPS+HCL RO Permeats Degaser Tank RO Reject Reject Tank ETP MB Tank RO Feed DM Storage Tank
- 8. ETP Water Cycle All Reject water from Boiler,Tirbine,DM plant Collection Tank Clarifier to Storagr Tank Poly+Fecl3 Dossing RO Permeats RO CollectionTank RO Reject Reject Tank CT Makeup UF to UF Tank Filter Storage Tank MGF Tank-A,B,C RO -1&2Stagd
- 9. Water Treatment Facility • Sludge Thickener • Quantity : 1 No • Flow : 4950 M3/Hr
- 10. Purpose of Pretreatment Chemicals • Coagulation • Coagulation is a process to neutralize charges and then to form a gelatinous mass to trap particles thus forming a mass large enough to settle or be trapped in the filter. • Flocculation • Flocculation is gentle stirring or agitation to encourage the particles thus formed to agglomerate into masses large enough to settle or be filtered from solution.
- 11. Water Treatment Facility • Non-DM water • High Rated Solid Contact Clarifier (HRSCC) • Quantity : 2 Nos • Capacity : 500 M3 • Flow : 4640 M3/Hr • DM water • High Rated Solid Contact Clarifier (HRSCC) • Quantity : 1 Nos • Capacity : 300M3 • Flow : 310 M3/H
- 12. Pretreatment Terminology • Turbidity • Turbidity is the cloudiness or haziness of a fluid caused by large numbers of individual particles that are generally invisible to the naked eye, similar to smoke in air. The measurement of turbidity is a key test of water quality • Clarifier • A clarifier is a settling tank used to remove solid waste particles from water. When the clarifier separates the concentrated impurities, the sludge formed by the process discharges from the bottom of the tank. • Thickener • An apparatus for the sedimentation of solids from suspension in a liquid. • Decanter Centrifuge • A centrifuge is a device, which employs a high rotational speed to separate components of different densities. A decanter centrifuge separates solid materials from liquids in slurry and therefore plays an important role in wastewater treatment.
- 13. Water Treatment Facility • Non-DM Gravity Sand Filter (GSF) • Quantity : 10 Nos • Flow : 2250 M3/Hr • DM Gravity Sand Filter (GSF) • Quantity : 2 Nos • Flow : 296 M3/Hr
- 14. GSF Outlet Water Quality S.No Parameter Units Result 1 pH --- 8.40 2 Conductivity µs/cm 335 3 Total Dissolved Salts ppm 201 4 Total Suspended Salts ppm ≤ 10 5 Turbidity NTU ≤ 10 6 Silica ppm 11 7 Chloride ppm 30
- 15. Water Treatment Facility • Ultra - Filtration (UF) : Qantity : 4 Nos • Flow : 112.75 M3/Hr • Type : Dead End – Flow • Membranes : 18 Nos • Chemicals Used in UF : • HCl • NaOH • NaOCl UF Outlet Water Quality S.N o Parameter Units Result 1 ORP mV 226.4 2 PH -- 7.39 3 Conductivity µs/cm 291.3
- 16. Ultra – filtration (UF) • A membrane type system that removes small colloids and large molecules from solutions. Ultrafiltration removes particles in size range between 0.01 to 0.1 micron range. The process falls between reverse osmosis and microfiltration as far as the size of particles removed is concerned • What can UF remove? • Non-reactive silica, Colloids, Algae, Bacteria, Coliform, Viruses, Proteins etc. • What UF Reduce • TOC, Colour components, SDI etc. • What UF will not remove? • Salts, Gasoline, Sugar, Alcohol, Smaller molecular weight molecules etc.
- 17. Schematic Representation of UF Dead – End Filtration Feed Membrane Filtrate To • UF TanK • Quantity : 1 Nos • Capacity : 121 M3 • Flow : 68 M3/Hr • PH : 7.8 • Conductivity :291 µs/cm
- 18. Water Treatment Facility • Reverse Osmosis (RO) :. Quantity:- 4nos • Stage : -3rd • Flow : 65 M3/Hr • Pressure : 8 kg/cm2 • Permeate Flow : 51 M3/Hr :. Reject Flow : 11 M3/Hr • Permeate Passes Size: • 0.001micron • Chemicals Used in RO : SMBS • HCl • Antiscalant
- 19. How Reverse Osmosis Works
- 20. Reverse Osmosis Terminology • Osmosis: • The movement of water molecules towards concentrated solutions • Reverse Osmosis: • Liquid Filtering process in which a contaminated (more concentrated) liquid is forced to pass through a semi-permeable membrane that block most dissolved or suspended contaminants. It is called 'reverse' because in normal osmosis a less- concentrated liquid passes into a more concentrated one. Reverse osmosis Fiters have a pore size around 0.0001 micron. • Feed: • Input to Reverse Osmosis system, Feed Flow = Permeate Flow + Reject Flow • Permeate: • The stream that passes through Reverse Osmosis Membrane.
- 21. Schematic Representation of Typical RO System Water Solution High Pressure Pump RO Module Reject Permeate
- 22. Reverse Osmosis Membrane view
- 23. . RO Outlet Water Quality S.No Parameter Units Result 1 pH --- 8.00 2 ORP mV 226.4 3 Conductivity µs/cm 5.43 4 RO Permit Flow m3/hr 51 5 RO Reject Flow m3/hr 11
- 24. Water Treatment Facility • Degasser TanK • Quantity : 1 Nos • Capacity : 100 M3 • Flow : 68 M3/Hr • PH : 8.18 • Conductivity : 6.3 µs/cm
- 25. Water Treatment Facility • Mixed Bed (MB) • Quantity : 4 Nos • Flow : 68 M3/Hr • OBR : 72 Hrs • PH : 8.18 • Conductivity : 6.6 µs/cm • Chemicals Used in MB : • HCl • NaOH
- 26. Water Storage Facility • DM Water Storage Tank • Quantity : 4 Nos • Capacity : 900 M3