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2. Chemical phosphorus removal - Wikipedia

   en.wikipedia.org/wiki/Chemical_phosphorus_removal

   Chemical phosphorus removal is a wastewater treatment method, where phosphorus is removed using salts of aluminum (e.g. alum or polyaluminum chloride), iron (e.g. ferric chloride), or calcium (e.g. lime). Phosphate forms precipitates with the metal ions and is removed together with the sludge in the separation unit (sedimentation tank ...

3. Aluminium sulfate - Wikipedia

   en.wikipedia.org/wiki/Aluminium_sulfate

   Aluminium sulfate is a salt with the formula Al 2 (SO 4) 3. It is soluble in water and is mainly used as a coagulating agent (promoting particle collision by neutralizing charge) in the purification of drinking water [3][4] and wastewater treatment plants, and also in paper manufacturing.

4. Dissolved air flotation - Wikipedia

   en.wikipedia.org/wiki/Dissolved_air_flotation

   Dissolved air flotation. Dissolved air flotation (DAF) is a water treatment process that clarifies wastewaters (or other waters) by the removal of suspended matter such as oil or solids. The removal is achieved by dissolving air in the water or wastewater under pressure and then releasing the air at atmospheric pressure in a flotation tank basin.

5. Coagulation (water treatment) - Wikipedia

   en.wikipedia.org/wiki/Coagulation_(water_treatment)

   Coagulation is a chemical process that involves neutralization of charge whereas flocculation is a physical process and does not involve neutralization of charge. The coagulation-flocculation process can be used as a preliminary or intermediary step between other water or wastewater treatment processes like filtration and sedimentation.

6. Induced gas flotation - Wikipedia

   en.wikipedia.org/wiki/Induced_gas_flotation

   Induced gas flotation (IGF) is a water treatment process that clarifies wastewaters (or other waters) by the removal of suspended matter such as oil or solids. The removal is achieved by injecting gas bubbles into the water or wastewater in a flotation tank or basin. The small bubbles adhere to the suspended matter causing the suspended matter ...

7. Flocculation - Wikipedia

   en.wikipedia.org/wiki/Flocculation

   Flocculation (except in polymer science) Process of contact and adhesion whereby dispersed molecules or particles are held together by weak physical interactions ultimately leading to phase separation by the formation of precipitates of larger than colloidal size. In contrast to aggregation, agglomeration is a reversible process.