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Factors Affecting Coagulation
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Definition : The process of mixing certain chemicals to water to neutralise the electrical charges and to form an insoluble, gelatinous flocculent precipitate for absorbing add en-training suspended and colloidal particles of impurities is called coagulation $Q_{s n}=\ Coagulation $

Factors Affecting Coagulation

Q. What are the factors affecting coagulation?

(a) Type of coagulant.

(b) Dose of coagulant.

(c) Time and method of mixing the coagulant.

(d) Character of water.

  • pH of water.

  • Temperature of water.

  • Nature and quantity of suspended matter.

Common Coagulants

Q. What are the common coagulants? Explain any one.

  • Alum or aluminium sulphate.

  • Chlorinated copperas.

  • Magnesium carbonate and lime.

  • Ferrous sulphate and lime.

  • Sodium aluminate and lime.

  • Poly electrolytes.

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