What are the common pollutants present in wastewater?

What are the common pollutants present in wastewater?

General types of water pollutants include pathogenic organisms, oxygen-demanding wastes, plant nutrients, synthetic organic chemicals, inorganic chemicals, microplastics, sediments, radioactive substances, oil, and heat.

Which chemical most commonly used in wastewater treatment?

Certain basic or alkaline chemicals used to raise wastewater pH are below: CaO (calcium oxide or lime), MgO (magnesium oxide), Ca (OH) (calcium hydroxide, a hydrated form of lime) or Mg (OH) (magnesium hydroxide) are the most commonly used chemicals because of availability, low cost, and high capacity.

What is standard A and B effluent?

According to the Malaysian standard for effluent sewage discharged, standard A is applicable to discharge into any water within any catchment areas, and standard B is applicable to discharge into any other inland waters or Malaysian waters.

What are the 8 major water pollutants?

The main water pollutants include bacteria, viruses, parasites, fertilisers, pesticides, pharmaceutical products, nitrates, phosphates, plastics, faecal waste and even radioactive substances.

What are the 3 major water pollutants?

The Causes of Water Pollution

  • Industrial Waste. Industries and industrial sites across the world are a major contributor to water pollution.
  • Marine Dumping.
  • Sewage and Wastewater.
  • Oil Leaks and Spills.
  • Agriculture.
  • Global Warming.
  • Radioactive Waste.

Which chemical is used in STP?

Sodium Sulphate : Sodium sulfate, also known as sulfate of soda, is the inorganic compound with formula Na₂SO₄ as well as several related hydrates. All forms are white solids that are highly soluble in water.

Which chemical is used in ETP?

Offering you a complete choice of products which include Poly Aluminium Chloride Liquid, Anionic Polyelectrolyte, Cationic Polyelectrolyte Powder, Poly Aluminium Chloride Powder, Caustic Soda Lye and Caustic Soda Flakes.

What are the standards for TSS?

Total suspended solids (TSS) are particles that are larger than 2 microns found in the water column. Anything smaller than 2 microns (average filter size) is considered a dissolved solid.

What is the permissible limit of BOD in wastewater?

The Significance of BOD in Wastewater Treatment BOD is listed as a conventional pollutant under the U.S. Clean Water Act. Typical maximum values range from 10 mg/L for direct environmental disposal and 300 mg/L for disposal to sewer systems.

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