Wastewater - Wastewater Constituents

Wastewater Constituents

The composition of wastewater varies widely. This is a partial list of what it may contain:

• Water ( > 95%) which is often added during flushing to carry waste down a drain;
• Pathogens such as bacteria, viruses, prions and parasitic worms;
• Non-pathogenic bacteria;
• Organic particles such as feces, hairs, food, vomit, paper fibers, plant material, humus, etc.;
• Soluble organic material such as urea, fruit sugars, soluble proteins, drugs, pharmaceuticals, etc.;
• Inorganic particles such as sand, grit, metal particles, ceramics, etc.;
• Soluble inorganic material such as ammonia, road-salt, sea-salt, cyanide, hydrogen sulfide, thiocyanates, thiosulfates, etc.;
• Animals such as protozoa, insects, arthropods, small fish, etc.;
• Macro-solids such as sanitary napkins, nappies/diapers, condoms, needles, children's toys, dead animals or plants, etc.;
• Gases such as hydrogen sulfide, carbon dioxide, methane, etc.;
• Emulsions such as paints, adhesives, mayonnaise, hair colorants, emulsified oils, etc.;
• Toxins such as pesticides, poisons, herbicides, etc.
• Pharmaceuticals and other hormones.