Intensifying the Cleaning of Emulsion- and Oil-Bearing Waste Water from Rolled-Product Manufacturing by Electroflotation

被引：1

作者：

Maksimov, E. A. ^{[1
]}

Ostsemin, A. A. ^{[2
]}

机构：

[1] Intrai Co, Chelyabinsk, Russia

[2] Russian Presidential Acad, Natl Econ & Publ Serv, Moscow, Russia

来源：

METALLURGIST | 2015年 / 58卷 / 11-12期

关键词：

intensification of primary and secondary cleaning; emulsion- and oil-bearing waste water from rolling-mill operation; electroflotation;

D O I：

10.1007/s11015-015-0022-8

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

It is shown that it is possible to intensify the cleaning of emulsion- and oil-bearing waste water from rolling-mill operation. The water is given a secondary treatment in an electrical flotation unit that automatically controls current density and electrode spacing. Operating regimes for the unit are developed for the secondary cleaning of emulsion-bearing waste water from cold-rolling mills after primary cleaning in horizontal settling tanks with reagent FeCl2, a small amount of H2SO4, and spent pickling solution. The optimum regime for use of the flotation unit for the secondary cleaning of oil-bearing waste water from hot-rolling mills is determined. A cleaning level of 94-95% is achieved for waste water in which the initial content of petroleum products is 100 mg/liter.

引用

页码：945 / 949

页数：5