Classification of industrial wastewaters

Industrial wastewaters can be classified from different viewpoints, e.g. according to the origin, composition, suitability of biological or other type of treatment, potential for causing damage, etc. 

According to their quality, the wastewaters from industrial works can be divided as follows  

Technological waters can be further subdivided according to their quality into 

From the mexopoint of the prevailing group of pollutants industrial wastewaters are usually subdivided as follows  

The most frequently occurring wastewaters in practice are combined types and pollution by both organic and inorganic matters is equally important. Apart from these two predominating groups of substances it is also necessary to evaluate the presence of different harmful agents (e.g. toxic substances, tensides, oils) which can influence the overall character of wastewater by their effect, or can have negative effects on the treatment processes. 

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Table 2. Coarse classification of industrial wastewater based on UV spectrophotometry...

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