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)

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.

The addition of oxygen, removal of hydrogen, or the removal of electrons from an element of compound. With respect to water treatment, organic matter is oxidized to more stable substances.

• (BNR01) Nitrification and Denitrification – An Introduction to Nitrogen Removal (1485)
• (BIO10) Estimating Sludge Volume (2343)

The application of ozone to water for disinfection or for taste and odor control.