一、前言目前,国内外大型化肥厂及石油化工厂大多仍采用六偏磷酸钠或三聚磷酸钠为主的磷系水处理剂,聚磷酸盐缓蚀剂价格较低,但在高温下容易水解或递解成正磷酸根并形成磷酸钙等沉淀。此外,磷酸盐系菌藻微生物的营养剂,使用中要促进微生物的生长,造成严重的生物污泥。 I. Introduction At present, most large-scale fertilizer plants and petrochemical plants both at home and abroad still use phosphorus-based water treatment agents mainly composed of sodium hexametaphosphate or sodium tripolyphosphate. The price of polyphosphate corrosion inhibitors is relatively low, but they are easy to handle under high temperature Hydrolyze or degrade into orthophosphate and form a precipitate such as calcium phosphate. In addition, phosphate-based bacteria and micro-organism nutrients, in use to promote the growth of microorganisms, causing serious biological sludge.