Main parameters in the water quality discharge standards are briefly discussed in below:
pH
pH is a measure of the concentration of hydrogen ions in the waste water and gives an indication of how acid or alkaline the waste water is. This parameter is important because aquatic life such as most fish can only survive in a narrow pH range between roughly pH 6.5-8.
Oil and Grease
This includes all oils, fats and waxes, such as kerosene and lubricating oils. Oil and grease cause unpleasant films on open water bodies and negatively affect aquatic life. They can also interfere with biological treatment processes and cause maintenance problems as they coat the surfaces of components of ETPs.
BOD
Measurement of the oxidisable organic matter in waste water is usually achieved through determining the 5-day biological oxygen demand (BOD5), the chemical oxygen demand (COD) and total organic carbon (TOC).
pH is a measure of the concentration of hydrogen ions in the waste water and gives an indication of how acid or alkaline the waste water is. This parameter is important because aquatic life such as most fish can only survive in a narrow pH range between roughly pH 6.5-8.
Oil and Grease
This includes all oils, fats and waxes, such as kerosene and lubricating oils. Oil and grease cause unpleasant films on open water bodies and negatively affect aquatic life. They can also interfere with biological treatment processes and cause maintenance problems as they coat the surfaces of components of ETPs.
BOD
Measurement of the oxidisable organic matter in waste water is usually achieved through determining the 5-day biological oxygen demand (BOD5), the chemical oxygen demand (COD) and total organic carbon (TOC).