Principles of types of water treatment chemicals

Water treatment agents are necessary chemicals in the treatment process of industrial water, domestic water and wastewater. By using these chemicals, water can reach certain quality requirements. Its main function is to control the formation of scale and sludge, reduce foam, reduce corrosion of materials in contact with water, remove suspended solids and toxic substances in the water, deodorize, decolorize, and soften water quality. At present, due to the rapid increase in water consumption in various countries around the world, various environmental protection regulations and water purification laws have been enacted one after another, and the requirements are becoming increasingly stringent, so the development of various efficient water treatment chemicals is rapid. In my country, the contradiction with the increasingly serious water resource crisis is that the production capacity of water treatment chemicals is very low and the quality cannot be guaranteed. Therefore, it is urgent to accelerate the development of my country's water treatment chemicals, an environmentally friendly material industry.
Water treatment chemicals include flocculants, corrosion inhibitors, scale inhibitors, biocides, dispersants, cleaning agents, pre-film agents, defoaming agents, decolorizers, chelating agents, oxygen scavengers, and ion exchange resins. Here is a brief introduction.
Flocculant
Main ingredients
It is made from alumina clinker, bauxite, soda ash and quicklime, which is burned in proportion and ground.
Quicklime
Appearance is white or gray-brown, amorphous, absorbs water and carbon dioxide in the air. Calcium oxide reacts with water to form calcium hydroxide and releases heat. Soluble in acid water, insoluble in alcohol. It is an inorganic alkaline corrosive product and has a national hazardous code number.
Quick lime is a commonly used desiccant for removing water vapor by chemical absorption. [] It is also used in steel, pesticides, pharmaceuticals, desiccants, tanning, and alcohol dehydration. Quicklime generally contains overfired lime, and overfired lime slakes slowly. If slaking occurs after the lime slurry has hardened, it will cause bulging and cracking due to the expansion caused by slaking. In order to eliminate the hazards of overfired lime, the lime should be aged for about a week after slaking.
Quicklime will react chemically with water, and then it will be immediately heated to a high temperature exceeding ℃.