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Bacteria, parasitic worms, and other pathogens
1. Hair, vomit David Sharpe Authentic 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
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4. Seawater coming into land
5. Waste from acid or alkali manufacture
6. Draining of storm water
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8. Drainage from agricultural activities

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The waste water treatment procedure consists of a series of steps.

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Secondary Treatment of Waste water: Secondary treatment of waste water includes biological treatment of water. This biological treatment removes the organic waste from the water. Microorganisms are used to convert solids that will not settle into solids that will settle. Secondary Treatment is used for waste water applications. The various systems for secondary water treatment are aeration systems, biological treatment systems, sludge and bio-solids processing system. Secondary treatment consists of the processes of activated sludge process, oxidation ponds and lagoons, and trickling filters. The Fundamentals of Engineering Exam include the secondary treatment of waste water.

While treating waste water, the sewage in the water can be considered as a resource or it can be considered as a pollutant. There are waste water treatment plants that purify the water using physical Gareon Conley Authentic Jersey , chemical, or biological methods. Fixed film systems, trickling filters, sand filters, suspended film systems, activated sludge systems, and lagoon systems are also used in the secondary treatment stage.

Tertiary Treatment of Waste water: Tertiary treatment involves the removal of disease causing germs. This tertiary treatment is done through chlorination P.J. Hall Authentic Jersey , Ozone rays, Ultraviolet light, and hydrogen peroxide. Tertiary Treatment includes the following units and processes. They are membrane filtration and separation and disinfectant systems, reverse osmosis systems, Ion exchange, activated carbon absorption, and physicalchemical treatment. The Fundamentals of Engineering Exam Prep cover all types of waste water treatment.

Circulation of Treated Water: The treated water is sent across the country either to drink Kolton Miller Authentic Jersey , used in industry, or for medicinal purposes.

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