We know the major indicators of testing water, the purpose is to ensure the safe discharge of water quality! What are the sensory indicators and what are the main parameters to judge them?
Sensory indicators refer to the water quality that can be directly observed with the eyes, nose, tongue and other sensory organs, and the general hygiene of drinking water, such as: color, turbidity, odor and what can be seen by the naked eye. These sensory changes will make people react with disgust. We can use the water quality monitor to judge the indicators in the water. There are several sensory indicators of drinking water:
1.Chroma
The chroma of water simply refers to the color of water. Can be divided into false color and true color two cases. False color is formed because of the suspended matter contained in the water, which can also be called “surface color”, and the water is colorless when these suspended matter are removed. True color is caused by some dissolved substances and phase sols in water, and true color is difficult to remove in the process of purification! And of course there are waters that are both. (Modi COL-8000 water chroma online monitor is an instrument controlled by an embedded system, and a variety of water chroma real-time online monitoring can be done. When the sample is filtered through the membrane, it is pumped into the measuring tank, and the color value is calculated by the induction change of the water sample to the light. The instrument also has the automatic dilution function, which can be automatically diluted for some sewage or water samples with large water color, and then the measurement range of water color can be expanded by the multiple dilution method.)
2.Turbidity
The transparency or turbidity of the water quality is somewhat related to the amount of sediment and organic matter contained in the water. The more of these substances, the less transparent the surface, and the greater the turbidity. For example, when drinking water is polluted by suspended solids such as sediment and industrial wastewater, the turbidity has been significantly increased, so the turbidity of the water quality can be used as one of the indicators of the quality of the water.
3.Bad Smell
Stink refers to the bad stimulation of the sense of smell, taste refers to the stimulation of the taste under the tongue, and normal clean water does not have a stink.
4.Substances Visible to the Naked Eye
Visible matter refers to particles or other suspended matter that we can see in water. It is mainly from soil erosion, domestic and industrial waste pollution, etc., if the water with high iron content is exposed to the air, the bivalent iron in the water is easy to oxidize and form precipitation, and improper water treatment will cause the residue of flocculants in the water. The proliferation of algae in the water with serious organic pollution, which will cause the production of a large number of colored suspended solids in the water, these are the phenomena that we can see with our naked eyes!
