A Basic Primer To Treating Water

A Basic Primer To Treating Water

 Water pollution by business and humans is a major problem.

Below is a four step summary of water treatment.

It appears as if …

  1. We use massive infusions of chemicals to sanitize water
  2. prescription medications,  over the counter medications, pesticides and other chemicals are not cleaned or removed.
  3. Septic tanks treat sewage at the place where it is located, rather than transporting the waste through a treatment plant or sewage system. Septic tanks are usually used to treat sewage from an individual building.

    • Untreated sewage from a property flows into the septic tank and the solids are separated from the liquid.
    • Solid material is separated depending on their density. Heavier particles settle at the bottom of the tank whereas lighter particles, such as soap scum, will form a layer at the top of the tank.
    • Biological processes are used to help degrade the solid materials.
    • The liquid then flows out of the tank into a land drainage system and the remaining solids are filtered out.
  4. Ozone wastewater treatment

    Ozone wastewater treatment is a method that is increasing in popularity. An ozone generator is used to break down pollutants in the water source.

    • The generators convert oxygen into ozone by using ultraviolet radiation or by an electric discharge field.
    • Ozone is a very reactive gas that can oxidise bacteria, moulds, organic material and other pollutants found in water.
    • Using ozone to treat wastewater has many benefits:
      • Kills bacteria effectively.
      • Oxidises substances such as iron and sulphur so that they can be filtered out of the solution.
      • There are no nasty odours or residues produced from the treatment.
      • Ozone converts back into oxygen quickly, and leaves no trace once it has been used.
    • The disadvantages of using ozone as a treatment for wastewater are:
      • The treatment requires energy in the form of electricity; this can cost money and cannot work when the power is lost.
      • The treatment cannot remove dissolved minerals and salts.
      • Ozone treatment can sometimes produce by-products such as bromate that can harm human health if they are not controlled.

       

    We will examine other methods for water treatment.

The Water Pollution Guide