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Waste water is any water that is affected by anthropogenic activity or activities of human beings. Domestic Waste water is made up of 40% from toilet flushing Yann Sommer Switzerland Jersey , 30% from bathing, 15% from laundry, 10% from kitchen, and 5% from others. Waste water is made up of a lot of ingredients. One of the ingredients is water that is flushed from the toilet and other household activities. Other ingredients in waste water are:

Bacteria, parasitic worms, and other pathogens
1. Hair, vomit Xherdan Shaqiri Switzerland Jersey , feces
2. Fruit sugar, drugs, and medicines
3. Sand, metal particles, and ceramics
4. Animals such as small fish
5. Macro-solids such as children’s toys
6. Gases such as carbon-dioxide
7. Emulsions such as mayonnaise and paints
8. Toxins such as poisons
9. Pharmaceuticals

Waste water can come from a variety of sources such as:
1. Leakage from Septic Tank or Cesspit
2. Rainfall on the roof of buildings
3. Cleaning liquids and paints from domestic sources
4. Seawater coming into land
5. Waste from acid or alkali manufacture
6. Draining of storm water
7. Wastes from pesticide manufacture
8. Drainage from agricultural activities

Why must you treat waste water? Waste water must be treated to remove the pollutants in the waste water, to improve health and public hygiene, to preserve organisms in waterways Valon Behrami Switzerland Jersey , wildlife, and to improve quality of life.
The waste water treatment procedure consists of a series of steps.

Primary Treatment of Waste water: The primary treatment of waste water involves the removal of large objects from sewage. This involves removal of rags, grease, sticks, and floating objects. Preliminary treatment makes use of units such as screening, grit chamber, skimming tanks Steve von Bergen Switzerland Jersey , pumps. Screening is used for removing floating matter. Grit chamber is used for removing sand and grits. Primary treatment involves the following processes – sedimentation, and also coagulation. Sedimentation is used to settle heavy solids under the influence of gravity. The Fundamentals of Engineering helps in knowing the primary treatment of waste water.