Biological Purification Process of CF-Containing Waste Waters from Petroleum

Author Name(s): Elvira I. Мukhitova, Alena A. Inyusheva, 3Nina N. Smirnova
Author Email: elvirusik.89@mail.ru

Abstract

In the article, the use of the drug, Etafos-f at concentrations of 10-4 , 10-5 , 10-6 , 10-7 g/dm3. as an activator of activity of the biocenosis of activated sludge in the purification of coolant-containing wastewater. The study found that the addition of the drug in a concentration of 10-4 g/dm3 reduces the content of petroleum products in the wastewater 7 times compared with the initial sample (144.6 mg/dm3) and 3 times compared with the classical biological treatment.

Introduction

The use of water-soluble cutting fluids (CF) is an integral part of the technological process of metal machining. Modern technological emulsions are toxic to representatives of the biocenosis of aquatic ecosystems in the concentration range of 3.0-0.015% [1]. In the process of metalworking fluids are microoperation and lose the complex technological and hygienic properties [2], resulting in frequent replacement of the CF and increase CF-containing wastewater. Wastewater engineering enterprises are multi-component and multiphase water systems. The composition of such effluents includes mineral oils, surfactants, bactericidal and anticorrosive additives, in many cases, heavy metals, as well as toxic products of destruction of CF components. During salvo discharges of CF-containing wastewater, concentrated waste water, which is an emulsion, enters the treatment facilities. As a result, the process of water purification is disrupted and it is not possible to achieve the required water quality in terms of “oil products”.

Conclusion

The results indicate the possibility of using the substance « Etafos-f » as an activator of activity of the biocenosis of activated sludge in the purification of CF-containing waste water from oil products.

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