Residual Chlorine Reduction of Wastewater Using UV or Dechlorination

Training overview
Professional Course
Self-paced Online
2 hours
From 59.90 USD
Start dates
59.90 USD
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Course description

In Residual Chlorine Reduction of Wastewater Using UV or Dechlorination, you'll learn ...

  • Why it is important to reduce the amount of residual chlorine entering receiving waters from wastewater outflow pipes
  • Advantages and disadvantages of dechlorination and ultraviolet (UV) systems
  • How dechlorination by sulfonation works
  • Options for measuring residual chlorine levels
  • Factors that impact the effectiveness of UV disinfection systems


Credit: 2 PDH

Length: 19 pages

Chlorination has been widely used as a germicidal agent in the final treatment of wastewater since the passage of the 1972 Federal Water Pollution Act-FWPA. Changes in regulations are mandating reduced chlorine levels in wastewater outflows since studies have indicated that chlorine can be toxic to aquatic life and harmful to the shellfish industry.

This course will introduce the student to UV disinfection as an alternative, which will totally eliminate the use of chlorine and all concerns about the Total Residual Chlorine TRC levels. The course will also examine the optional dechlorination process, which chemically removes total dissolved chlorine from wastewater before it enters the outflow pipe.

If you are involved with wastewater treatment and you wish to become familiar with dechlorination procedures and UV treatment or you are concerned about reduction of TRC levels, this course will provide you with basic information you will need.

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Certificate of Completion

You will be able to immediately print a certificate of completion after passing a multiple-choice quiz consisting of 20 questions. PDH credits are not awarded until the course is completed and quiz is passed.

Training content

This course teaches the following specific knowledge and skills:

  • Understand how UV exposure effects the cells of infectious agents
  • The basic types of UV reactor configurations
  • The optimum wavelengths and intensities required for germicidal use of UV
  • Wastewater characteristics which affect UV disinfection performance
  • Review actual case studies on existing treatment plants
  • Chemistry of dechlorination by sulfonation
  • Required equipment for gaseous sulfonation
  • How to estimate daily required dosage of SO2
  • Use of sulfite salts in lieu of gaseous sulfonation


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7915 FM 1960 West, Suite 130
77070 Houston Texas

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