Water/Wastewater

Waste Analysis Plan

The final stage in waste water treatment (following biological
treatment).  Examples are reverse osmosis, activated carbon filtration and
ultra filtration microstraining.  These polishing or purification
processes are used in preparation for possible reuse of water.

A waste containing less than 1% (10,000 PPM) by weight TOC or less than 1%
(10,000 PPM) Total Suspended Solids (TSS).

Use of screening and sedimentation  (settling) to remove floating or
settleable solids from waste water.  Primary treatment includes the use of
screening & grit removal, oil separation, floatation and sedimentation.

The second step in waste water treatment uses bacteria to consume organic
and inorganic pollutants.  Examples are trickling filters, activated
sludge, extended aeration, facultative lagoons, anaerobic lagoons, aerated
lagoons, stabilization ponds, etc.

The areas that drain to surface waterbodies.  A watershed generally
includes lakes, rivers, estuaries, wetlands, streams and the surrounding
landscape.

Whole Effluent Toxicity (CWA: 40 CFR 136.3).  WET are laboratory
experiments that measure the aquatic toxicity, i.e., the biological effect
(e.g., growth, survival and reproduction) of effluents or receiving waters on
aquatic organisms.  In aquatic toxicity tests, groups of organisms of a
particular species are held in test chambers and exposed to different
concentrations of an aqueous test sample.  Observations are made at
predetermined exposure periods.  At the end of the test, the responses of
test organisms are used to estimate the effects of the toxicant or effluent.

Waste Minimization National Plan

Water Quality Act

Water Quality Criteria

Worker Right To Know

World Wildlife Federation

Wastewater Treatment

Wastewater Treatment Plan