Chlorine Dioxide Generation Chemical Safety and Environmental Awareness

SKU: C-683Duration: 16 Minutes

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Course Details


Training Time: 16 minutes

Compatibility: Desktop, Tablet, Phone

Based on: Industry Standards and Best Practices

Languages: English, Portuguese, French, Polish, Russian

For the majority of bleach plants in operation today, chlorine dioxide is produced by combining sodium chlorate, methanol, and sulfuric acid. This course discusses the hazards each of these chemicals present as well as the protective measures that should be taken while working with or around them.

Learning Objectives

  • Identify the hazardous chemicals used for chlorine dioxide generation and bleaching
  • Describe the safety hazards and guidelines for chlorine dioxide
  • Describe the safety hazards and guidelines for sodium chlorate
  • Describe the safety hazards and guidelines for sulfuric acid
  • Describe the safety hazards and guidelines for methanol
  • Describe Process Safety Management and how it applies to chlorine dioxide processes
  • Identify and describe the purpose of the cluster rule
  • Explain how air and water pollution from chlorine dioxide generation and bleaching processes are controlled

Key Questions

The following key questions are answered in this module:

What hazardous chemicals are used to generate chlorine dioxide?
Most processes used today use methanol, sodium chlorate, and sulfuric acid, which are all hazardous. Chlorine dioxide is also hazardous.

What are the main hazards of chlorine dioxide?
Chlorine dioxide can be a serious threat to respiratory system. Exposure to high concentrations can be fatal.

What are the main hazards of methanol?
Methanol is highly flammable but the flame is almost invisible in daylight. It is highly toxic if it gets absorbed through skin, ingested, or inhaled.

What are the main hazards of sodium chlorate?
Sodium chlorate is only a mild skin irritant, but small quantities (5-10 g) can be fatal if ingested.

What are the main hazards of sulfuric acid?
Sulfuric acid is highly corrosive so it will cause severe chemical burns if it contacts your skin or eyes.

Sample Video Transcript

Below is a transcript of the video sample provided for this module:

Chlorine dioxide storage poses a significant environmental and safety threat. There are several features needed for the safe storage of chlorine dioxide. The tank should be insulated to keep chlorine dioxide cool. An explosion relief lid on the top of the tank in case an explosion occurs. Sweep air is added to the top of the storage tank to dilute the concentration of vent gas sent to the scrubber. A floating cover in the tank can reduce the amount of ClO2 gas present at the top of the tank. This can allow higher storage concentrations which can reduce tank size, energy for generation and cooling, and the amount of steam needed in the bleach plant.
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