Sewage Treatment Plant

Chemicals and Media

Chemicals and Media

Much of wastewater produced today is contaminated with both soluble and insoluble impurities such as suspended solids, organics, pathogens, metals, nutrients and other priority pollutants that must be removed prior to discharge back into the environment.

They are categorized as follows:

  • pH adjustment chemicals (to adjust pH level of treated water)

    alkaline chemicals: CaO (calcium oxide or lime), MgO (magnesium oxide), Ca (OH) (calcium hydroxide), Mg (OH) (magnesium hydroxide) acidic chemicals: Sulfuric acid (H2S04), Hydrochloric acid (HCl)

  • Coagulant chemicals

    Ferric Chloride, Aluminium Chloride (AlCl3), Aluminium Sulphate [Al2(SO4)3] and Ferric Chloride (FeCl3).

  • Flocculent chemicals

    Anionic polymers, Non-ionic polymers, Cationic polymers

Kelvin India, provides its clients with wide range of chemicals mentioned above and those needed for treatment of media filters used in STP, ETP and RO


It is in the last stage in the pre-treatment of water for removal of undissolved impurities prior to treatment by Ion Exchange or by Reverse Osmosis. Coagulation, flocculation and clarification precede filtration.

Kelvin provides both types of media filters, ie pressure and gravity filters. Kelvin provides best in class media with use of combined action of layers filters like: Activate carbon filter, dual media filter, multigrade filter, pressure sand filter, gravity filter and side stream filter. Coarse media filters are also supplied wrt the requirement. Kelvin provides the best solution for its clients according to their need.

Installation & Commissioning of Plant
Extension Work Of STP
Repair & Maintenance Work of STP

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