TY - JOUR AU1 - Pozdeev, A. AU2 - Bobylev, Yu. AU3 - Zmeev, Yu. AU4 - Kavtrev, V. AU5 - Radin, F. AU6 - Korobov, A. AB - A. A. Pozdeev, Yu. V. Bobylev, Yu. L. Zmeev, UDC 669.1:62-784 V. M. Kavtrev, F. A. Radin, and A. G. Korobov A closed-water supply system eliminating discharges of sewage into open reservoirs was created in our plant. Industrial discharges to be purified are grouped as follows according to the type of impurity: I) acid iron-containing wash waters from pickling sections; 2) oil- containing discharge waters, including the spent degreasing solutions and wash waters from degreasing apparatus, washwaters from oil-emulsion systems and gear cases of mills, and 9 spent oil-emulsions; 3) wash waters containing finely dispersed magnesium oxide and talc given off from the surface of the strips in manufacturing electroninsulating covering. The purification equipment consists of horizontal settlers, flotation and evaporating apparatus, a block for the purification equipment, and a combustion apparatus for oil waste. The acid iron-containing wash waters from the pickling sections are treated in a closed system in the following manner: neutralization in a 5% lime milk to 9-10.5 pH with an ad- dition of a polyacrylamide (PAA) flocculant during a partial oxidation of the iron by air and clarification in vertical continuously active settlers; additional purification of the clarified water in quartz filters. After this TI - Progressive methods for purifying industrial discharges JF - Metallurgist DO - 10.1007/BF01084526 DA - 2005-01-17 UR - https://www.deepdyve.com/lp/springer-journals/progressive-methods-for-purifying-industrial-discharges-8Dh6mnRxZ0 SP - 790 EP - 791 VL - 20 IS - 11 DP - DeepDyve ER -