Intensification of resource-saving technologies of water use
in the industrial wastewater treatment

Summary

The results of research focused on improving the technologies and equipment of recycling water supply systems with plating wastewater treatment at the local treatment facilities using multi-chamber electrocoagulation devices are presented. The research objective was intensifying the resource-saving water use technologies by improving the circulating systems of technological galvanic processes at the industrial enterprises using multi-chamber devices based on electrochemical coagulation. The process solutions for industrial wastewater treatment using multi-chamber horizontal and vertical devices based on electrochemical coagulation are considered. The equipment productivity 6–8 m3/h provides for processing plating wastewater containing different concentrations of heavy metal ions, suspended substances, lubricants, oil products, etc. The obtained results confirm their practical focus that consists in increasing the efficiency of industrial plating wastewater treatment (of about 94–96%).

Key words

water supply , water management , intensification , water use , resource-saving technologies , wastewater treatment , radial multi-chamber unit , spent wash liquor

Development and the Use of Settling Tank-Flocculators for Treatment of Recirculated Water at Metallurgical Works of Russia and Ukraine

Summary

It is told about the development by the scientific-engineering firm EKO-PROJECT and introduction at the metallurgical enterprises of Russia and Ukraine of a series of compact, highly efficient settling tank-flocculators intended for treatment of recirculated water of technological units, industrial-storm wastewater and water conditioning. Application of one-stage schemes of advanced wastewater treatment instead of two-level ones at settling tank-flocculators in a complex with new technology of gravitational dewatering of sludge produced therein allows to improve essentially all technical, economic and ecological indicators of water management of metal works.

Key words:

ferrous metallurgy factories , water management , settling tank-flocculator , advanced treatment of recirculated water , gravitational dewatering of sludge