| Issue |
E3S Web Conf.
Volume 274, 2021
2nd International Scientific Conference on Socio-Technical Construction and Civil Engineering (STCCE – 2021)
|
|
|---|---|---|
| Article Number | 06007 | |
| Number of page(s) | 7 | |
| Section | Construction Technology and Organization | |
| DOI | https://doi.org/10.1051/e3sconf/202127406007 | |
| Published online | 18 June 2021 | |
Improving the efficiency of technological processes for the treatment of highly concentrated wastewater to ensure environmental safety
Kazan State University of Architecture and Engineering, 420043 Kazan, Russia
* Corresponding author: saandreeva@mail.ru
The complexity of biochemical wastewater treatment is most often due to the presence of a large number of organic impurities, causing the death of the biological community of activated sludge microorganisms. Application of the method of lowering the pH of industrial effluents to minimum value reduces the solubility of organic substances in water, separating them into a separate layer of emulsified wastewater. In this case, the process of removing organic impurities from treated wastewater becomes the most accessible, but also requires solving the problems of technological and environmental safety. Dissolution of wastewater organic impurities separated into a separate layer a solvent – the extractant followed by the extraction of organic components extracted from it, reduces the level of wastewater pollution with organic substances according to the oxidation index (COD) to an acceptable level. The technology of the applied method allows for the final treatment using biological methods; and practically constructively mounts and build a new modernized technological line.
Key words: Wastewater treatment / technology / organic components / degree of purification / extractant / high-concentration wastewater
© The Authors, published by EDP Sciences, 2021
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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