Determination of physical and chemical water characteristics

Most of our impressions of water quality are based on physical rather than chemical or biological characteristics. We encounter water that is cloudy it is often coloured by tannins and other organic materials picked up from decaying plants and backwaters, sloughs and swamps are noted for their characteristic odours. Common analyses used to assess the physical impurities in water and wastewater are shown in Table 3.71 [11]. 

The main chemical parameters commonly determined in water are summarized in Table 3.72 [12]. In addition to these, a number of other solutes, in particular specific organic pollutants, may be determined in connection with specific health hazards or pollution incidents [35]. 

Water temperature is measured during water sampling by a precision mercury thermometer with scale divisions 0.1-0.5°C, or an electric thermometer with a resistance or thermistor sensor. For the temperature measurement at different water depths, special submersible thermometers are used [13, 14]. 

Tciste is determined in drinking waters only by sensory methods and is expressed by description only (salty, fresh, bitter, acid, or also the taste is 

Temperature To design and carry out biological and treatment processes to determine the saturation concentrations of various gases 

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