Method for treating sewage by waste liquid for removing rust

Application Number: 00110856
Application Date: 2000.01.25
Publication Number: 1285315
Publication Date: 2001.02.28
Priority Information:
International: C02F1/40
Applicant(s) Name: Zhang Chengshao
Inventor(s) Name: Zhang Chengshao
Patent Agency Code: 37207
Patent Agent: yuan ximeng
Abstract The method for treating sewage by using rust-removed waste liquorincludes the following steps: A. firstly, measuring FeCl3 content in rust-removed waste liquor; B. preparing water-cleaning agent; C. measuring pH value of sewage to be treated, adding alkaline substance to regulate pH value of sewage; and D. adding water-cleaning agent prepared from rust-removed waste liquor. Said invention can be used for treating sewage produced in paper mill, tanyard and printing and dyeing mill.