FREE ENVIRONMENTAL ENGINEERING PRACTICAL VIDEOS-2

DISSOLVED OXYGEN :-
 Dissolved oxygen refers to the level of free, non-compound oxygen present in water or other liquids. It is an important parameter in assessing water quality because of its influence on the organisms living within a body of water. In limnology (the study of lakes), dissolved oxygen is an essential factor second only to water itself .  A dissolved oxygen level that is too high or too low can harm aquatic life and affect water quality.  

                                          

                                    Measurement of Dissolved Oxygen

                                    Measurement of Dissolved Oxygen



pH VALUE :-
Pure water is neutral, with a pH of 7.0. When chemicals are mixed with water, the mixture can become either acidic or basic. Vinegar and lemon juice are acidic substances, while laundry detergents and ammonia are basic
                                          
                                         Measurement of pH Value

Water Quality :-

Water quality refers to the chemical, physical, biological, and radiological characteristics of water. It is a measure of the condition of water relative to the requirements of one or more biotic species and or to any human need or purpose. It is most frequently used by reference to a set of standards against which compliance can be assessed. The most common standards used to assess water quality relate to health of ecosystems, safety of human contact and drinking water.
                                              

                                  Measurement using Water Analysis Kit