Complex of deep reagent-free purification of industrial waste water on the basis of physical and chemical methods
- 1 — St. Petersburg State Technological Institute (Technical University)
- 2 — St. Petersburg State Technological Institute (Technical University)
- 3 — St. Petersburg State Technological Institute (Technical University)
Abstract
A complex for deep reagent-free treatment of industrial wastewater using only physical and chemical methods has been developed. Removal of organic impurities is ensured by deep anodic oxidation, and deposition of the bulk of polyvalent metals in the form of oxyhydrates and basic carbonates - by alkalinization to the optimal pH value of wastewater by catholyte of electromembrane apparatus. Additional treatment of decontate is carried out by the method of continuous ion exchange with autoregeneration of filter load. For deep water pretreatment before discharge a filter-garanter with highly selective to polyvalent metal ions complexing ionite is provided. Tests on real wastewater of some industrial enterprises of St. Petersburg showed that the developed technology provides obtaining water with statutory normative indicators.