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.

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Entries starting with: D

Dissolved Oxygen

Dissolved Oxygen (DO)

A measure of the amount of free or molecular oxygen dissolved in water, expressed as:

mg/L, which is the absolute amount of oxygen dissolved in the water mass or
the percentage saturation of water with O2 (% sat).

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

DMR

DMR – Discharge Monitoring Report

(BIO10) Estimating Sludge Volume (2343)

DO

DO - Dissolved Oxygien

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

Double Layer Compression

In the double layer compression mechanism large quantities of a salt that has no charge (neutral) are added. The salt works by compressing the double layer around the colloid. When the outer layer is compressed, the repulsive energy barrier around the colloid is reduced or eliminated. This allows the particles to combine.

(COA01) Coagulation – Part 1: The Chemistry of Coagulation (1248)

Drinking Water Electronic Laboratory Reporting

Drinking Water Electronic Laboratory Reporting (DWELR)

A web-based application that provides a means for laboratories that are accredited by or registered with DEP’s Bureau of Laboratories to submit their drinking water sample data to DEP’s public drinking water program.

(TCR02) Total Coliform Rule – Monitoring And Reporting Requirements (1425)

DWELR

DWELR - Drinking Water Electronic Laboratory Reporting

(TCR02) Total Coliform Rule – Monitoring And Reporting Requirements (1425)