04/04/2015

FREE ENVIRONMENTAL ENGINEERING PRACTICAL VIDEOS-3

CONDUCTIVITY :-
Specific conductance,  conductivity, measures how well the water  streams conducts an electrical current, a property that  is proportional to the concentration of ions in solution. Conductivity is often used as a  surrogate of salinity measurements and is  considerably higher in saline systems than in  non-saline systems.
                                                     
                                         Measurement of Conductivity -1

                             Measurement of Conductivity -2

ACIDITY :-
Natural acidity in rainwater is caused by the dissolution of atmospheric carbon dioxide (CO2). The hydrogen ions entering a drainage basin in rainwater are neutralized by carbonate and silicate minerals as water percolates through soils. This neutralization capacity in soils determines whether or not acid precipitation will cause water quality impacts in receiving water bodies. 
                                                                                                                         
                                                             Measurement of Acidity

ALKALINITY :-
In water, a small number of water (H2O)  + molecules dissociate and form hydrogen (H+)  and hydroxyl (OH- ) ions.If the hydroxyl ions dominate, then the water is defined as being alkaline.


                                                        Image result for alkalinity of water
                                                     Measurement of Alkalinity





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