Course Glossary


This shows the specialized terms used in EarthWise Academy. This section contains all the definitions used in the various course glossaries used by each course.

Browse the glossary using this index

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O

O&M

O&M – Operation and Maintenance

  • (PNR01) Public Notification – An Introduction for NCWSs (2332)

OCCT

Optimal Corrosion Control Treatment - Corrosion control treatment that minimizes the lead and copper concentrations at users' taps while ensuring that the treatment does not cause the system to violate any primary maximum contaminant level.

  • (LCR10) Lead and Copper Rule – Basics (1423)
  • (LCR11) LCR – Initial Planning, Monitoring and Reporting (1488)

One full year

any 12-consecutive month period of monitoring.

  • (DBP30) DBP Rule – Monitoring and Reporting Requirements for PWSs Using Ozone (1279)

Optimal Corrosion Control Treatment

Optimal Corrosion Control Treatment (OCCT)

Corrosion control treatment that minimizes the lead and copper concentrations at users' taps while ensuring that the treatment does not cause the system to violate any primary maximum contaminant level.

  • (LCR10) Lead and Copper Rule – Basics (1423)
  • (LCR11) LCR – Initial Planning, Monitoring and Reporting (1488)

Organic

  1. Relating or belonging to the class of chemical compounds having a carbon basis.
    • (BNR01) Nitrification and Denitrification – An Introduction to Nitrogen Removal (1485)
    • (BNR02) Nitrification Factors – Suspended Growth Treatment Systems (1821)
  2. Substances that come from animal or plant sources and contain carbon. Examples include wood, sugars, proteins, plastics, petroleum-based compounds, solvents and pesticides.
    • (BIO01) Biosolids Agronomic Loading Rates Part 1 (1247)
    • (BIO02) Biosolids Agronomic Loading Rates Part 2 – Manure (1484)

Organic Contaminants

Derived from animals and plants, or may be manufactured chemical compounds. However, all organics contain carbon. Organic contaminants can be biodegradable, which means that the contaminants can be consumed by bacteria and other microorganisms. In the process of being consumed, these organics will exert an oxygen demand (BOD) which can be measured as the Biochemical Oxygen Demand (BOD) of the wastewater. Some organic contaminants (refractory organics) are resistant to biodegradation.

  • (BIO10) Estimating Sludge Volume (2343)

Organic Material

  1. Relating or belonging to the class of chemical compounds having a carbon basis.
    • (BNR01) Nitrification and Denitrification – An Introduction to Nitrogen Removal (1485)
  2. Material which comes mainly from animal or plant sources. Organic wastes generally can be consumed by bacteria and other small organisms.
    • (BIO10) Estimating Sludge Volume (2343)

Organic Substances

Substances that come from animal or plant sources and contain carbon. Examples include wood, sugars, proteins, plastics, petroleum-based compounds, solvents and pesticides.

  • (DBP02) DBP Rule Monitoring and Reporting – Job Aids (1283)
  • (DBP10) DBP Rule Monitoring and Reporting for Chlorine⁄Chloramines (1284)
  • (DBP13) DBP Rule Monitoring and Reporting for TTHM⁄HAA5 (1285)

Organic Waste

Waste material that comes mainly from animal or plant sources. Organic wastes generally can be consumed by bacteria and other small organisms. Inorganic wastes are chemical substances of mineral origin.

  • (BNR01) Nitrification and Denitrification – An Introduction to Nitrogen Removal (1485)
  • (BNR02) Nitrification Factors – Suspended Growth Treatment Systems (1821)

Oxidant

  1. A substance that readily adds (takes on) electrons.
    • (DBP01) DBP Rule – Overview (1282)
  2. A substance that is used as an oxidizing agent, which causes a substance to lose electrons, changing its chemical nature.

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