What is total dissolved solids? Total dissolved solids is the concentration of the sum of the cations and anions in the water. In order words, Total Dissolved Solids are the total amount of mobile charged ions, including minerals, salts, or metals dissolved in a given volume of water, expressed in unit of milligrams per unit volume of water (mg/l), or part per million (ppm). Total Dissolved Solids is directly related to purity of water and quality of water purification system and affects everything that consumes, live in or uses water. While suspended solids are any particles or substances that are neither dissolved nor settled in water such as chips. Sources of Total Dissolved Solids The presence of total dissolved solids in water can come from either organic or inorganic sources. 1. Organic sources of Total Dissolved Solids Leaves, silt, phytoplankton, industrial wastes, sewage, run- off from urban areas, fertilizer and pesticides ...
Iron is one of the major secondary contaminant in both domestic and industrial water supply. Iron have caused water industries several billions of dollars . Iron is the second most abundant metal in the earth's crust behind Aluminum(8%), of which iron accounts for about 5%. Elemental iron is rarely found in nature, as the iron ions Fe2+ and Fe3+ readily combine with oxygen- and sulfur-containing compounds to form oxides, hydroxides, carbonates, and sulfides. As rain fall, rain water infiltrates the soil and underlying geologic formations and dissolves iron, causing it to seep into aquifers that serve as sources of groundwater for wells. In surface water, such as rivers and lakes, dissolved iron is hardly ever found, because it readily reacts with oxygen, forms insoluble compounds and sinks out into the bottom of the water body. Iron is seldom found at concentrations greater than 10 milligrams per liter (mg/L) or 10 parts per million. The iron that seep into the sources of g...