Induction report on dm plant

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