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We are primarily concerned with the environment and pollution of water. We provide chemicals for treatment of wastewater, sludges, raw water, boiler water, cooling water, and swimming pool.

The Principle of Water Treatment Part 1

There has been a widespread awareness for a cleaner environment.  Our major sources of pollution can be from water, air, and noise.  And most of us like to have a cleaner environment, but at the same time we are the major contributors or agents to our “pollutant”.

Toxic chemicals, harmful bacteria, unwanted solid waste and most of these can be classified as organic & inorganic waste.


When organic waste enter into the stream, most likely it will stimulate bacterial growth that affect aquatic life forms by depleting the oxygen level in the water. The stream becomes septic due to bacteria undergoing anaerobic metabolism producing odors and darkening the water appearance.

The inorganic wastes such as copper, nickel, lead, when enter into the stream are basically toxic substances that cannot be further broken-down by the bacteria and can be poisonous to human health & aquatic life forms.

These are some common environmental pollution related jargon:
1. Biodegradable organic - Those that can be broken down by microorganism to form stable
    compounds such as CO2  and water.

2. Effluent is the liquid, product discharged or emerging from a process.

3. COD (Chemical Oxygen Demand) - It is the amount of oxygen
    (usually measure in mg/ l (milligrams per litre)) required to oxidize both organic and
    oxidizable inorganic compounds.

4. BOD(Biochemical Oxygen Demand) - It is the amount of oxygen (mg/ l)
    required by microorganism to consume biodegradable organic in wastewater.

5. Total Solids is the sum of suspended solids and dissolved solids.

6. Suspended solids are those that can be removed by filtration.

7. Settle-able solids are those in suspension that will pass through a 2000 micron sieve and
    settle in one hour under gravity.

8. ‘pH’ is the hydrogen ion concentration in the medium which determines acidity and alkalinity.
    The principle objective of wastewater treatment is to remove the waste constituents that are
    harmful to the environment when discharged. The processes involved may include all or some
    of it, like the physical, chemical and biological treatments.

We need to work together to save our wonderful world from pollution !

In our next part 2, we will look at a typical wastewater treatment plant and its concept.

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