Using Waste Steel Pickling Liquor to Produce Sewage Treatment Agent

The paper covers the main process flow for producing sewage treatment agent——polyferric sulphate with waste steel pickling liquor as well as the raw material and equipment therefor. Comparison of the said agent with relevant applicable national standard and the commercial equivalent shows that it has been up to the requirements as specified in applicable national standard. The process advantageously features small investment, quick returns and environment friendliness.