| A | B |
|---|
| SEWAGE | Waste material from runoff and domestic sources |
| CONTAMINANT | Foriegn objects or substances |
| RUNOFF | Untreated water |
| TREATED EFFLUENT | Water suitable for use or discharge. |
| SLUDGE | solid waste material. |
| PRIMARY TREATMENT | Seperation of solids from waste water. |
| SECONDARY TREATMENT | conversion of biological matter by aerobic means. |
| TERTIARY TREATMENT | Final filtering and cleaning and lagooning |
| DISINFECTED | Reduction of the number of microorganisms. |
| AEROBIC | Process done in thepresence of oxygen. |
| ANAEROBIC | Process done without oxygen. |
| SAND CATCHER | Sand bed used to collect solid material. |
| SEDIMENT | Solids that settle out of a solution |
| FLOCCULENT | Suspended solid particles. |
| SETTLING TANK | Container that allows suspended particles to settle out. |
| LAGOON | Man made pond used to aerate water. |
| EUTRIPHICATION | Excessive buildup of nutrients. |
