ABSTRACT
Industrial wastewater treatment covers the mechanisms and process used to treat water that have been contaminated in some way by anthropogenic industrial or commercial activities prior to its release into the environment or its re-use.
Water is a natural and inorganic solvent with the composition of hydrogen and oxygen only (H20). When there is addition of other organic or inorganic, substances (high levels of nutrients, nitrogen and phosphorous) in water which may come as a result of weather change domestic, waste, industrial waste, lack of awareness and ignorance, then the water is known as waste water which cause a disease called water borne diseases.
Wastewater is very dangerous especially to human beings and should be treated to avoid these dangerous diseases.
There are many method of treating waste water and they include:
– Primary Method
– Secondary Method
– Tertiary Method
The primary method involves many treatment process such as;- screening process, skimming process and sedimentation process.
The secondary method of treatment also involves such treatment process such as aerated lagoons process, trickling filters process etc.
The tertiary method is the final method that involves disinfections process. This process is used to polish and bring back the quality of water which include: PH value, hardness, flories, taste suspended solid, colour etc (Uche, 2011).
CHAPTER ONE
1.0 INTRODUCTION
Water is essential for the survival of any form of life. On an average, a human being consumer about 2 litres of water everyday. Water accounts for about 70% of the weight of a human body. About 80% of the earth’s surface (ie 80% of the total 500 million hectares in area) is covered by water. Out of the estimated 1,11 million km3 of the total water present on earth, only 33,400m3 of water is available for drinking, agriculture domestic and industrial consumption. The rest of the water is locked up in oceans as salt water, polar ice caps and glaciers and underground. Owing to increased industrialization on one hand and exploding population on the other, the demands of water supply have been increasing tremendously.
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