Disinfection, Chlorination and Oxidation
Chlorination: application of chlorine to water, generally for the purpose of disinfection, but also for other purposes such as odor control.
Disinfection: the addition of chlorine, ozone, UV light, etc. to water in order to kill or inactivate disease causing organisms; effectiveness measured using the coliform test.
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Disinfection
•Destruction or inactivation of pathogenic organisms
•Disinfection can be done by:– chemical means-chlorine, ozone, –non-chemical means-heat, UV irradiation
Disinfection
•Destruction or inactivation of pathogenic organisms
•Disinfection can be done by:– chemical means-chlorine, ozone, –non-chemical means-heat, UV irradiation
Alternative Technologies – Chlorine Dioxide
First used in beginning of 20th century, Ostend Belgium.
Known powerful water disinfectant, implemented to water disinfection in 1950’s.
Approximately 700-900 installations in water treatment.
Does not react with organics in the same way chlorine does.
Alternative Technologies – Chlorine Dioxide
First used in beginning of 20th century, Ostend Belgium.
Known powerful water disinfectant, implemented to water disinfection in 1950’s.
Approximately 700-900 installations in water treatment.
Does not react with organics in the same way chlorine does.
Evaluation of Chlorine Dioxide (ClO2) Generation System for Disinfection in RO Product Water at SWCC Jubail Plant
Recent studies have shown the formation of bromate in desalination-derived drinking water, especially when the desalinated water is treated with sodium
hypochlorite solution produced by electrolyzing seawater.
Evaluation of Chlorine Dioxide (ClO2) Generation System for Disinfection in RO Product Water at SWCC Jubail Plant
Recent studies have shown the formation of bromate in desalination-derived drinking water, especially when the desalinated water is treated with sodium
hypochlorite solution produced by electrolyzing seawater.
Advanced Disinfection Study Guide
This operator's study guide represents the results of an ambitious program. Operators of
wastewater facilities, regulators, educators and wastewater businesses, jointly prepared the
objectives and exam questions for this subclass.
How to use this study guide with references
In preparation for the exams you should:
1. Read all of the key knowledges for each objective.
2. Use the resources listed at the end of the study guide for additional information.
3. Review all key knowledges until you fully understand them and know them by memory.
Advanced Disinfection Study Guide
This operator's study guide represents the results of an ambitious program. Operators of
wastewater facilities, regulators, educators and wastewater businesses, jointly prepared the
objectives and exam questions for this subclass.
How to use this study guide with references
In preparation for the exams you should:
1. Read all of the key knowledges for each objective.
2. Use the resources listed at the end of the study guide for additional information.
3. Review all key knowledges until you fully understand them and know them by memory.
Disinfection Of Treated Wastewater
These guidelines provide a framework of best practices for the disinfection of treated wastewater destined either for reuse or disposal to surface waters. They will also assist water businesses and private owners of package sewage treatment plants to meet their obligations for environmental protection as stated in the SEPP (Waters of Victoria). The ultimate goal of wastewater treatment and disinfection is to produce an effluent of such quality (dependent upon final use) that minimal additional controls are needed to manage any human health, agricultural or environmental risks.
Disinfection Of Treated Wastewater
These guidelines provide a framework of best practices for the disinfection of treated wastewater destined either for reuse or disposal to surface waters. They will also assist water businesses and private owners of package sewage treatment plants to meet their obligations for environmental protection as stated in the SEPP (Waters of Victoria). The ultimate goal of wastewater treatment and disinfection is to produce an effluent of such quality (dependent upon final use) that minimal additional controls are needed to manage any human health, agricultural or environmental risks.
Chlorination: Disinfection And Oxidation
• Disease causing organisms can be found in surface water and some in ground water, some can be removed by preliminary, primary and secondary treatments processes. But not all are removed.
• The addition of a chemical disinfectant is necessary if a water treatment processes is to meet the coliform MCL, preventing any water borne diseases.
• Cl2, due to it relatively low cost & ease with which it be obtained is the most commonly used chemical for this purpose.
• Chlorine is available in 3 forms:
1. Chlorine Gas
2. Calcium or Sodium Hypochlorite solution
3. Calcium or Sodium Hypochlorite powder (HTH)
Chlorination: Disinfection And Oxidation
• Disease causing organisms can be found in surface water and some in ground water, some can be removed by preliminary, primary and secondary treatments processes. But not all are removed.
• The addition of a chemical disinfectant is necessary if a water treatment processes is to meet the coliform MCL, preventing any water borne diseases.
• Cl2, due to it relatively low cost & ease with which it be obtained is the most commonly used chemical for this purpose.
• Chlorine is available in 3 forms:
1. Chlorine Gas
2. Calcium or Sodium Hypochlorite solution
3. Calcium or Sodium Hypochlorite powder (HTH)
Disinfection
The destruction of pathogenic organisms
Not to be confused with sterilization, which is the destruction of all organisms
Chlorine is the most widely used disinfecting chemical
Disinfection
The destruction of pathogenic organisms
Not to be confused with sterilization, which is the destruction of all organisms
Chlorine is the most widely used disinfecting chemical
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