Textile Wet Processing-1

What are the sources of water ?

Ans: The sources of water are -

         1. Rain water - we get it from sky.
         2. Surface water - we get it from river, sea, pond.
         3. Underground water - we get it under the soil.
                    i. subsoil water (under 20ft -100ft up)
                    ii. deep well water (under 200ft - 300ft up)

 Among these, deep well water is preferable for wet processing.

 What is PPM ?

 Ans: PPM(parts per million): The number of grains of calcium carbonates(caco3) which is     present in one million grains of water is called PPM.