我国主要化学水处理剂（Main chemical water treatment chemicals in China）.docVIP

我国主要化学水处理剂（Main chemical water treatment chemicals in China） 1. Corrosion inhibitor There are many inhibitors (XII), such as chromate, zinc salt, phosphate, nitrate and silicate, as water medium. With the requirements of environmental protection, has been widely used in organic phosphate in water, such as amino phosphonic acid (ATMP): 32, two hydroxy ethylidene phosphonic acid (HEDP), and ethylene diamine tetramethylidene four phosphonic acid (EDTMP), and organic phosphate, such as three yuan, six yuan alcohol alcohol phosphate phosphate, special copper corrosion inhibitor is thiol benzothiazole and benzo triazole three. Molybdate and tungstate as inhibitors have recently been popularized. Aromatic triazole is a corrosion inhibitor for copper and its alloys, mainly thiol benzothiazole and benzo triazole three. 2. Scale inhibitors Using organic phosphonic acid, low molecular weight acrylic polymers and copolymers, is a major breakthrough in the scale control of inorganic, organic polybasic phosphonic acid is a kind of cathodic inhibitor, is a kind of non stoichiometric inhibitor, synergistic effect has obvious effect on the solubility limit and calcium, magnesium, copper, zinc and plasma and with the chelating ability of other agents, therefore is now widely used in water treatment. Water soluble polymer as scale inhibitor dispersing into the treatment formula, since 70s gradually evolved into two homopolymer copolymer, and further development of two yuan, four yuan of copolymer copolymer, which is the most active research areas in development since 80s. So far, the development of water-soluble polymers can be classified into the following categories: (L) homopolymer: polyacrylic acid, poly maleic acid and so on, its main performance is to inhibit the dispersion of calcium carbonate. (2) two yuan copolymer: acrylic acid / maleic acid or acrylic acid / acrylic acid alkyl ester copolymer. In addition to the inhibition of calcium carbonate, there is also a good ability