Podcast
Questions and Answers
EASY What is the primary source of boiler feedwater?
EASY What is the primary source of boiler feedwater?
- Municipal potable water
- Pretreated well water
- Deionized water
- Untreated surface water (correct)
Why is it important to know the local water chemistry?
Why is it important to know the local water chemistry?
- To understand what conditions require treatment (correct)
- To determine the water's turbidity
- To determine the pH level of the water
- To determine the cost of equipment
Where can local water quality reports be found?
Where can local water quality reports be found?
- At the local library
- With the local water treatment plant
- At the town hall
- Online through the local water utility (correct)
What is the primary purpose of municipal potable water systems?
What is the primary purpose of municipal potable water systems?
What is the main reason for removing solids from water?
What is the main reason for removing solids from water?
What is the primary concern with high turbidity in water?
What is the primary concern with high turbidity in water?
Why is chlorine added to water?
Why is chlorine added to water?
Why must chlorine addition be carefully controlled?
Why must chlorine addition be carefully controlled?
What is the primary source of municipal water in the Vancouver area?
What is the primary source of municipal water in the Vancouver area?
What is the purpose of adding sodium hydroxide (NaOH) to municipal water for boiler use?
What is the purpose of adding sodium hydroxide (NaOH) to municipal water for boiler use?
What is the first step in a typical municipal water treatment process?
What is the first step in a typical municipal water treatment process?
What is the purpose of the clarification step in municipal water treatment?
What is the purpose of the clarification step in municipal water treatment?
Why is it necessary to remove oxygen from municipal water used in boilers?
Why is it necessary to remove oxygen from municipal water used in boilers?
What is the purpose of adding lime to municipal water?
What is the purpose of adding lime to municipal water?
What is the purpose of using activated carbon filters in municipal water treatment?
What is the purpose of using activated carbon filters in municipal water treatment?
Why is it necessary to remove residual chlorine from municipal water used in boilers?
Why is it necessary to remove residual chlorine from municipal water used in boilers?
What is the purpose of using degasifier towers in boiler feedwater treatment?
What is the purpose of using degasifier towers in boiler feedwater treatment?
What is the potential health benefit of using ultraviolet (UV) light or ozone for disinfection in municipal water treatment?
What is the potential health benefit of using ultraviolet (UV) light or ozone for disinfection in municipal water treatment?
What is the limit of silica in industrial fire tube boilers according to ASME guidelines?
What is the limit of silica in industrial fire tube boilers according to ASME guidelines?
Why is disinfection using chlorine not necessary in boiler feedwater treatment from non-municipal source water?
Why is disinfection using chlorine not necessary in boiler feedwater treatment from non-municipal source water?
What is the purpose of a settling pond in boiler feedwater treatment from non-municipal source water?
What is the purpose of a settling pond in boiler feedwater treatment from non-municipal source water?
What is the problem associated with high alkalinity in boiler water?
What is the problem associated with high alkalinity in boiler water?
What is the purpose of neutralization in external water treatment?
What is the purpose of neutralization in external water treatment?
What is the purpose of demineralization in external water treatment?
What is the purpose of demineralization in external water treatment?
What is the minimum level of dissolved oxygen that can be achieved through external water treatment?
What is the minimum level of dissolved oxygen that can be achieved through external water treatment?
What is the purpose of anion exchange in external water treatment?
What is the purpose of anion exchange in external water treatment?
MEDIUM What is the maximum recommended silica level in industrial fire tube boilers according to ASME guidelines?
MEDIUM What is the maximum recommended silica level in industrial fire tube boilers according to ASME guidelines?
What is the typical purpose of adding compounds like alum, clay, and polymers in boiler feedwater treatment?
What is the typical purpose of adding compounds like alum, clay, and polymers in boiler feedwater treatment?
What is the primary method used to remove dissolved oxygen from boiler feedwater?
What is the primary method used to remove dissolved oxygen from boiler feedwater?
Which of the following issues is associated with high levels of chloride in boiler water?
Which of the following issues is associated with high levels of chloride in boiler water?
What is the purpose of using UV or ozone systems in boiler feedwater treatment?
What is the purpose of using UV or ozone systems in boiler feedwater treatment?
What is the typical retention time in a settling pond used in boiler feedwater treatment?
What is the typical retention time in a settling pond used in boiler feedwater treatment?
Which of the following processes is used to remove hardness from boiler feedwater?
Which of the following processes is used to remove hardness from boiler feedwater?
What is the typical purpose of anion exchange in external water treatment?
What is the typical purpose of anion exchange in external water treatment?
Why is municipal water not suitable for boiler use?
Why is municipal water not suitable for boiler use?
What is the purpose of clarification in municipal water treatment?
What is the purpose of clarification in municipal water treatment?
What is the potential problem associated with high levels of silica in boiler water?
What is the potential problem associated with high levels of silica in boiler water?
Why is it necessary to remove oxygen from municipal water used in boilers?
Why is it necessary to remove oxygen from municipal water used in boilers?
What is the purpose of adding sodium hydroxide (NaOH) to municipal water for boiler use?
What is the purpose of adding sodium hydroxide (NaOH) to municipal water for boiler use?
Why is it necessary to remove residual chlorine from municipal water used in boilers?
Why is it necessary to remove residual chlorine from municipal water used in boilers?
What is the purpose of filtration in municipal water treatment?
What is the purpose of filtration in municipal water treatment?
What is the concern with high levels of iron (Fe) in boiler water?
What is the concern with high levels of iron (Fe) in boiler water?
What is the purpose of using activated carbon filters in municipal water treatment?
What is the purpose of using activated carbon filters in municipal water treatment?
What is the purpose of disinfection in municipal water treatment?
What is the purpose of disinfection in municipal water treatment?
What is the primary advantage of using municipal water as a source of boiler feedwater?
What is the primary advantage of using municipal water as a source of boiler feedwater?
What is the primary goal of municipal potable water systems?
What is the primary goal of municipal potable water systems?
What is the primary concern with high turbidity in water?
What is the primary concern with high turbidity in water?
What is the primary purpose of removing pathogens from municipal water?
What is the primary purpose of removing pathogens from municipal water?
What is the primary concern with dissolved oxygen in boiler feedwater?
What is the primary concern with dissolved oxygen in boiler feedwater?
Why is it necessary to test municipal water for a range of chemicals and bacteria?
Why is it necessary to test municipal water for a range of chemicals and bacteria?
What is the primary advantage of using municipal water quality reports?
What is the primary advantage of using municipal water quality reports?
What is the primary purpose of disinfecting municipal water?
What is the primary purpose of disinfecting municipal water?
HARD What is the primary concern with high turbidity in boiler feedwater?
HARD What is the primary concern with high turbidity in boiler feedwater?
What is the primary reason for adding chlorine to municipal water?
What is the primary reason for adding chlorine to municipal water?
Why is it necessary to remove dissolved gases, dissolved solids, and hardness from municipal water for boiler use?
Why is it necessary to remove dissolved gases, dissolved solids, and hardness from municipal water for boiler use?
What is the primary advantage of using municipal water as a source of boiler feedwater?
What is the primary advantage of using municipal water as a source of boiler feedwater?
What is the primary goal of municipal potable water systems?
What is the primary goal of municipal potable water systems?
What is the primary purpose of removing solids from municipal water?
What is the primary purpose of removing solids from municipal water?
Why is it necessary to test municipal water for a range of chemicals and bacteria?
Why is it necessary to test municipal water for a range of chemicals and bacteria?
What is the primary concern with dissolved oxygen in boiler feedwater?
What is the primary concern with dissolved oxygen in boiler feedwater?
What is the primary purpose of using lime and lime-soda softening in boiler feedwater treatment?
What is the primary purpose of using lime and lime-soda softening in boiler feedwater treatment?
What is the primary concern associated with high levels of silica in boiler water?
What is the primary concern associated with high levels of silica in boiler water?
What is the purpose of using anion exchange in external water treatment?
What is the purpose of using anion exchange in external water treatment?
What is the primary purpose of using coagulation in boiler feedwater treatment?
What is the primary purpose of using coagulation in boiler feedwater treatment?
What is the primary concern associated with high levels of chloride in boiler water?
What is the primary concern associated with high levels of chloride in boiler water?
What is the purpose of using demineralization in external water treatment?
What is the purpose of using demineralization in external water treatment?
What is the primary advantage of using UV or ozone systems in boiler feedwater treatment?
What is the primary advantage of using UV or ozone systems in boiler feedwater treatment?
What is the primary purpose of using clarification in boiler feedwater treatment?
What is the primary purpose of using clarification in boiler feedwater treatment?
What is the primary purpose of adding sodium hydroxide (NaOH) to municipal water for boiler use?
What is the primary purpose of adding sodium hydroxide (NaOH) to municipal water for boiler use?
What is the primary concern with high levels of silica in boiler water?
What is the primary concern with high levels of silica in boiler water?
What is the primary purpose of clarification in municipal water treatment?
What is the primary purpose of clarification in municipal water treatment?
What is the primary purpose of using activated carbon filters in municipal water treatment?
What is the primary purpose of using activated carbon filters in municipal water treatment?
What is the primary concern with high levels of iron (Fe) in boiler water?
What is the primary concern with high levels of iron (Fe) in boiler water?
What is the primary purpose of disinfection in municipal water treatment?
What is the primary purpose of disinfection in municipal water treatment?
What is the primary concern with high turbidity in water?
What is the primary concern with high turbidity in water?
What is the primary advantage of using municipal water as a source of boiler feedwater?
What is the primary advantage of using municipal water as a source of boiler feedwater?
What is the primary purpose of filtration in municipal water treatment?
What is the primary purpose of filtration in municipal water treatment?
Why is it necessary to remove residual chlorine from municipal water used in boilers?
Why is it necessary to remove residual chlorine from municipal water used in boilers?
Study Notes
Boiler Feedwater Sources
- Boiler feedwater can be sourced from both untreated (surface and well water) and pretreated locations.
- Local water chemistry is important to understand to determine what conditions need to be treated and how to size equipment.
Municipal Water Treatment
- Municipal potable water systems use three main steps to purify water:
- Remove solids
- Remove pathogens
- Disinfect
- The goal is to provide safe drinking water that is aesthetically acceptable.
- Municipalities must meet target requirements of jurisdictional regulation.
- Table 1 shows some of the most relevant parameters, including:
- pH
- Turbidity
- Free chlorine
- Total dissolved solids
- Hardness
- Municipal water is already treated, but still requires further treatment for dissolved gases, dissolved solids, and hardness.
Municipal Water Treatment Process
- The typical process involves:
- Removing solids through screens and clarification
- Removing remaining small particles through filtration
- Disinfecting with chlorine, UV light, or ozone
- The collected particles are further processed to recover available water and then sent to a landfill.
Boiler Feedwater Treatment (Municipal Source Water)
- When using municipal water as feedstock, it requires further processing to:
- Reduce hardness
- Remove oxygen and other dissolved gases
- Adjust the pH
- Care must be taken to minimize the amounts of iron, copper, and silica in the water.
- Tables 2 and 3 show recommended ASME guidelines for boiler water quality.
Boiler Feedwater Treatment (Non-Municipal Source Water)
- For non-municipal sources, pre-treatment is essential before the water goes to the boiler house.
- The first two stages of the process (clarification and filtration) are still required.
- Disinfection using chlorine is not necessary, and ultraviolet or ozone systems can be used instead.
- If the water has significant suspended solids, a settling pond can be used initially to remove most of the solids.
Common Problems with Boiler Water
- Table 4 shows some of the common potential problems with boiler water, including:
- Acidity (low pH)
- Alkalinity
- Chloride
- Dissolved oxygen and carbon dioxide
- Hydrocarbons
- Hardness (Ca and Mg ions)
- Iron and copper
- Silica
- Suspended solids
- Dissolved solids
- Possible preventative solutions are listed for each problem.
Boiler Feedwater Sources
- Boiler feedwater can be sourced from both untreated (surface and well water) and pretreated locations.
- Local water chemistry is important to understand to determine what conditions need to be treated and how to size equipment.
Municipal Water Treatment
- Municipal potable water systems use three main steps to purify water:
- Remove solids
- Remove pathogens
- Disinfect
- The goal is to provide safe drinking water that is aesthetically acceptable.
- Municipalities must meet target requirements of jurisdictional regulation.
- Table 1 shows some of the most relevant parameters, including:
- pH
- Turbidity
- Free chlorine
- Total dissolved solids
- Hardness
- Municipal water is already treated, but still requires further treatment for dissolved gases, dissolved solids, and hardness.
Municipal Water Treatment Process
- The typical process involves:
- Removing solids through screens and clarification
- Removing remaining small particles through filtration
- Disinfecting with chlorine, UV light, or ozone
- The collected particles are further processed to recover available water and then sent to a landfill.
Boiler Feedwater Treatment (Municipal Source Water)
- When using municipal water as feedstock, it requires further processing to:
- Reduce hardness
- Remove oxygen and other dissolved gases
- Adjust the pH
- Care must be taken to minimize the amounts of iron, copper, and silica in the water.
- Tables 2 and 3 show recommended ASME guidelines for boiler water quality.
Boiler Feedwater Treatment (Non-Municipal Source Water)
- For non-municipal sources, pre-treatment is essential before the water goes to the boiler house.
- The first two stages of the process (clarification and filtration) are still required.
- Disinfection using chlorine is not necessary, and ultraviolet or ozone systems can be used instead.
- If the water has significant suspended solids, a settling pond can be used initially to remove most of the solids.
Common Problems with Boiler Water
- Table 4 shows some of the common potential problems with boiler water, including:
- Acidity (low pH)
- Alkalinity
- Chloride
- Dissolved oxygen and carbon dioxide
- Hydrocarbons
- Hardness (Ca and Mg ions)
- Iron and copper
- Silica
- Suspended solids
- Dissolved solids
- Possible preventative solutions are listed for each problem.
Boiler Feedwater Sources
- Boiler feedwater can be sourced from both untreated (surface and well water) and pretreated locations.
- Local water chemistry is important to understand to determine what conditions need to be treated and how to size equipment.
Municipal Water Treatment
- Municipal potable water systems use three main steps to purify water:
- Remove solids
- Remove pathogens
- Disinfect
- The goal is to provide safe drinking water that is aesthetically acceptable.
- Municipalities must meet target requirements of jurisdictional regulation.
- Table 1 shows some of the most relevant parameters, including:
- pH
- Turbidity
- Free chlorine
- Total dissolved solids
- Hardness
- Municipal water is already treated, but still requires further treatment for dissolved gases, dissolved solids, and hardness.
Municipal Water Treatment Process
- The typical process involves:
- Removing solids through screens and clarification
- Removing remaining small particles through filtration
- Disinfecting with chlorine, UV light, or ozone
- The collected particles are further processed to recover available water and then sent to a landfill.
Boiler Feedwater Treatment (Municipal Source Water)
- When using municipal water as feedstock, it requires further processing to:
- Reduce hardness
- Remove oxygen and other dissolved gases
- Adjust the pH
- Care must be taken to minimize the amounts of iron, copper, and silica in the water.
- Tables 2 and 3 show recommended ASME guidelines for boiler water quality.
Boiler Feedwater Treatment (Non-Municipal Source Water)
- For non-municipal sources, pre-treatment is essential before the water goes to the boiler house.
- The first two stages of the process (clarification and filtration) are still required.
- Disinfection using chlorine is not necessary, and ultraviolet or ozone systems can be used instead.
- If the water has significant suspended solids, a settling pond can be used initially to remove most of the solids.
Common Problems with Boiler Water
- Table 4 shows some of the common potential problems with boiler water, including:
- Acidity (low pH)
- Alkalinity
- Chloride
- Dissolved oxygen and carbon dioxide
- Hydrocarbons
- Hardness (Ca and Mg ions)
- Iron and copper
- Silica
- Suspended solids
- Dissolved solids
- Possible preventative solutions are listed for each problem.
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Description
Learn about the importance of understanding local water chemistry for boiler feedwater treatment, including sourcing and analyzing water quality reports.
