The letter D in a dream represents confrontation with sacrifice. Full awareness of a situation that demands that you give something up or put others first. The symbolism is based on the design of the letter D being a straight line that is facing a half circle.
drain line: A pipe line which is used to carry water from the water treatment system to a waste system. drinking water: A water treated or untreated which is intended for human use and consumption and considered to be free of harmful chemicals and disease-causing bacteria, cysts, viruses or other microorganisms.
Objectives of Water Treatment. The Water Treatments are to remove the different impurities present in the raw water, to render the water safe and clean and to ensure the water treatment process and treated water quality meets the drinking water standards. The type of water treatment required depends on the characteristics of the raw water.