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Boiler System Make-up Water Primary Secondary Pretreatment

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Presentation on theme: "Boiler System Make-up Water Primary Secondary Pretreatment"— Presentation transcript:

1 Boiler System Make-up Water Primary Secondary Pretreatment
Condensate Steam Header Deaerator Boiler Chemical Feed Systems Feedwater Blowdown

2 Boiler System Make-up Water Primary Secondary Pretreatment
Condensate Steam Header Deaerator Boiler Chemical Feed Systems Feedwater Blowdown

3 Boiler System Make-up Water Primary Secondary Pretreatment
Condensate Steam Header Deaerator Boiler Chemical Feed Systems Feedwater Blowdown

4 Boiler System Make-up Water Primary Secondary Pretreatment
Condensate Steam Header Deaerator Boiler Chemical Feed Systems Feedwater Blowdown

5 Boiler System Make-up Water Primary Secondary Pretreatment
Condensate Steam Header Deaerator Boiler Chemical Feed Systems Feedwater Blowdown

6 Condensate System Make-up Water Primary Secondary Pretreatment
Steam Header Deaerator Boiler Chemical Feed Systems Feedwater Blowdown

7 Boiler System Make-up Water Primary Secondary Pretreatment
Condensate Steam Header Deaerator Boiler Chemical Feed Systems Feedwater Blowdown

8 Boiler System Make-up Water Primary Secondary Pretreatment
Condensate Steam Header Deaerator Boiler Chemical Feed Systems Feedwater Blowdown

9 Pretreatment Make-up Water Primary Secondary Pretreatment Pretreatment
Condensate Steam Header Deaerator Boiler Chemical Feed Systems Feedwater Blowdown

10 Types of Pretreatment Equipment

11 Types of Pretreatment Equipment
Primary Clarifiers

12 Types of Pretreatment Equipment
Primary Clarifiers Lime Soda Softener

13 Types of Pretreatment Equipment
Primary Clarifiers Lime Soda Softener Sodium Zeolite Softener

14 Types of Pretreatment Equipment
Primary Clarifiers Lime Soda Softener Sodium Zeolite Softener Secondary Demineralizer

15 Types of Pretreatment Equipment
Primary Clarifiers Lime Soda Softener Sodium Zeolite Softener Secondary Demineralizer Dealkalizers

16 Types of Pretreatment Equipment
Primary Clarifiers Lime Soda Softener Sodium Zeolite Softener Secondary Demineralizer Dealkalizers Reverse Osmosis

17 Scale

18 Purpose of a Softener

19 Purpose of a Softener Remove Hardness Minerals from Raw Water

20 Purpose of a Softener Remove Hardness Minerals from Raw Water
Reduce Chemical Usage

21 How Does a Softener Work

22 Softener Ca, Mg Na, Na

23 Ion Exchange Process Calcium Magnesium Sodium Sodium Sodium Sodium

24 Ion Exchange Process Calcium Calcium Magnesium Calcium Sodium Sodium

25 Why is Salt Used?

26 Why is Salt Used? Sodium is Very Soluble, Will Not Form Scale

27 Why is Salt Used? Sodium is Very Soluble, Will Not Form Scale
Very Inexpensive

28 Softener Inspection

29 Softener Internals Softener Brine Tank

30 Resin Depth in. Brine Tank

31 Freeboard in. Brine Tank

32 Inlet Water Distribution Header
Brine Tank

33 Brine Distribution System
Tank

34 Support Media Brine Tank

35 How Can You Tell if Your Softener is Not Working Correctly?

36 How Can You Tell if Your Softener is Not Working Correctly?
Check Hardness of Water Leaving Softener

37 How Can You Tell if Your Softener is Not Working Correctly?
Check Hardness of Water Leaving Softener Check Amount of Treated Water Between Regenerations

38 How Can You Find Out What’s Causing the Problem?

39 How Can You Find Out What’s Causing the Problem?
Check Softener Regeneration Cycle

40 How Can You Find Out What’s Causing the Problem?
Check Softener Regeneration Cycle Make a Visual Inspection of Softener Internals

41 Four Steps of Softener Regeneration

42 Four Steps of Softener Regeneration
Fast Rinse Backwash Brining Slow Rinse

43 Purpose of Backwashing
Remove Mud, Sand, Dirt Remove Broken Resin Beads

44 Backwash Flow Rate

45 Critical Part of Backwashing
Dirt and Broken Resin Beads Must Reach Top of Water Distribution Header.

46 A Successful Backwash 50% Expansion of Resin Bed 8-15 gpm/sq. ft.
10-20 min.. Clear Water

47 Backwash Flow Rate Resin Check

48 Four Steps of Softener Regeneration
Backwash Fast Rinse Brining Slow Rinse

49 Brining Dilution Water 2 3 1 Salt Solution 4

50 Purpose of Brining

51 Purpose of Brining Remove Hardness Minerals from Resin Beads
Replenish Sodium Ions on Resin

52 Critical Part of Brining
There Must Be Enough Salt to Force the Calcium and Magnesium Off the Resin

53 A Successful Brining Used 6-15 lbs. of Salt per Cubic Foot of Resin

54 A Successful Brining Uses 6-15 lbs. of Salt per Cubic Food of Resin
Has a Brine Tank Salt Concentration of 98 to 100° Salometer (or 27-29% by Weight)

55 A Successful Brining Uses 6-15 lbs. of Salt per Cubic Foot of Resin
Has a Brine Tank Salt Concentration of 98 to 100° Salometer (or 27-29% by Weight). Has a Minimum Softener Brine Concentration (After Dilution) of 30 Salometer (8% by weight)

56 A Successful Brining Uses 6-15 lbs of Salt per Cubic Foot of Resin
Has a Brine Tank Salt Concentration of 98 to 100° Salometer (or 27-29% by Weight). Has a Minimum Softener Brine Concentration (After Dilution) of 30 Salometer (8% by weight) Maintains a Brine Concentration of 30° Salometer for 30 Minutes

57 Brine Tank

58 Salometer

59 Measuring Brine Strength

60 Good Brining Cycle Salometer Degrees Time - Minutes 40 20 10 20 30 40
30 Minutes at 30 Salometer Degrees 10 20 30 40 50 60 70 Time - Minutes

61 What’s Wrong Here? Salometer Degrees Time - Minutes 40 20 10 20 30 40
10 20 30 40 50 60 70 Time - Minutes

62 What’s Wrong Here? Salometer Degrees Time - Minutes 40 20 10 20 30 40
10 20 30 40 50 60 70 Time - Minutes

63 What’s Wrong Here? Salometer Degrees Time - Minutes 40 20 10 20 30 40
10 20 30 40 50 60 70 Time - Minutes

64 Four Steps of Softener Regeneration
Backwash Fast Rinse Brining Slow Rinse

65 Slow Rinse

66 Purpose of the Slow Rinse
Push Salt All the Way Through the Softener

67 A Successful Slow Rinse
Is at the Same Rate as Brining

68 Four Steps of Softener Regeneration
Backwash Fast Rinse Brining Slow Rinse

69 Fast Rinse

70 Purpose of the Fast Rinse
Remove Excess Salt from the Softener Before it Goes Back On-Line

71 A Successful Fast Rinse
Uses gals. of Rinse Water per Cubic Foot of Resin Uses the Same Flow Rate at Which the Softener Operates

72 Things to Look for During a Mechanical Inspection
Distribution Ports and Regenerant Laterals

73 Not Plugged, Corrosion Free and Level

74 Header Parallel to Resin Surface

75 Things to Look for During a Mechanical Inspection
Distribution Ports and Regenerant Laterals Depth of Resin Bed

76 30-36 Inches Deep 15-18 Inches of Freeboard

77 Things to Look for During a Mechanical Inspection
Distribution Ports and Regenerant Laterals Depth of Resin Bed Surface of the Resin

78 Short Circulating

79 Channeling

80 Unleveled Bed

81 Things to Look for During a Mechanical Inspection
Distribution Ports and Regenerant Laterals Depths of Resin Bed Surface of the Resin Sample of the Resin

82 Resin Sampling

83 Clean Resin

84 Fouled Resin

85 Clean Resin - 100x

86 Clean Resin x

87 Iron Fouled Resin - 100x

88 Iron Fouled Resin x

89 Consequences of Poor Softener Operation

90 Consequences of Poor Softener Operation
Energy Wasted By Boiler Scale Excessive Chemical Treatment Costs Wasted Salt and Water from Poor Regenerations

91 Dealkallizers

92 Purpose of a Dealkalizer

93 Purpose of a Dealkalizer
Remove Alkalinity from Raw Water

94 Purpose of a Dealkalizer
Remove Alkalinity from Raw Water Reduce Neutralizing Amine Usage

95 Purpose of a Dealkalizer
Remove Alkalinity from Raw Water Reduce Neutralizing Amine Usage Reduce Condensate Corrosion

96 How Does a Dealkalizer Work?

97 Ion Exchange Process Bicarbonate Alkalinity Chloride Chloride Chloride

98 Bicarbonate Bicarbonate
Ion Exchange Process Bicarbonate Bicarbonate Bicarbonate Bicarbonate Chloride

99 Reverse Osmosis

100 Osmosis P1 H2O Strong Solution H2O Water H2O H2O

101 Reverses Osmosis P1 H2O Strong Solution H2O Water H2O H2O

102 Typical RO Performance
Constituent, mg/l Raw Finished Hardness, as CaCO3 Alkalinity, as CaCO3 Total Electrolyte, as CaCO3 Silica, as SiO2 pH CO2 380 215 445 45 7.2 25 20 16 29 3 6.0 25

103 R.O. Fouling Can Be Caused By:
Microbial Slime Inorganic Precipitates Treatment is Similar to That of an Evaporative Cooling Tower

104 Periodic Cleaning is Important to:
Insure R.O. Efficiency

105 Typical Cleaning Solutions
Mild Acid Solutions Caustic Solutions Chelate Solutions

106 Applications Purity Drinking Water Waste Water Treatment
Chemical Reclamation Pharmaceutical Processes Solids Reduction of Boiler Feedwater with TDS 800 or Higher Abas taher


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