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.
Water Treatment Solutions. Screening. Screening is the first treatment station, both for surface and wastewater. Easily separate and remove large matter carried along by the raw water, which might negatively affect the efficiency of later treatment procedures or make their implementation more difficult.