DESIGN IMPROVEMENT AND RESEARCH WASTE WATER TREATMENT APPARATUS DURING CLARIFICATION
Article Sidebar
Main Article Content
Abstract
Industrial wastewater treatment is a complex and diverse process that depends on a number of factors that characterize this industrial production. This article discusses one of the issues of wastewater treatment related to the clarification of wastewater in pressure flotation devices-coagulation of industrial production. Based on the developed technical and technological solutions, the design of the wastewater treatment apparatus has been improved, allowing for a higher degree of wastewater clarification. This goal is achieved by installing a parallel series of sludge collectors with perforated walls of the extreme collectors, equipped with filter elements and inclined trays, the height of which is set as each of the collectors is removed from the beginning of the flotation chamber, in the middle part of which holes are made, and in the lower part of the flotation chamber there are two cone-shaped elements, one of which is truncated, connected by bases, and in the plane of the connection of the bases of the cone-shaped elements, a distributor of gas-saturated water is installed, made in the form of perforated pipelines and pipes. The theory of operation of the coalescing filter is given, where, when using mathematical dependencies, volumetric oil concentrations at the filter inlet and at the depth of wastewater treatment are taken into account, which ensures the reliability of the clarifying devices. The particle sizes and the efficiency of oil purification on a coalescing filter are determined.
Subject: clarification processes in pressure flotation devices-coagulation of circulating water supply systems of industrial enterprises.
Material and methods: bibliographic search for the operation of circulating water supply systems using wastewater clarification processes in local wastewater treatment schemes/
Results. The conducted research allowed us to identify technological solutions for the improved design of the wastewater treatment apparatus, which, due to the perforation in the front collector, saturator, ejector and insoluble electrodes, creates conditions for more efficient treatment (clarification) of wastewater. From a technical point of view, the use of design improvements makes it possible to ensure reliable operation of all equipment when wastewater clarification occurs in several stages. The optimal technological chain of wastewater treatment is selected depending on the initial degree of contamination and the way of further recycling of water resources in industrial production.
Conclusions: the use of theoretical dependencies that take into account the volumetric concentrations of oil at the filter inlet and at the depth of wastewater treatment ensures the reliability of the clarifying devices. The reliability of operation is determined by the efficiency of the following two processes: precipitation of emulsion droplets from the stream onto the filter loading granules and the efficiency of removal of sediment from the surface of the granules. In this case, the deposition of a continuous film of oil occurs due to gravitational and hydrodynamic forces from the total volume of loading, and the efficiency of precipitation from the surface of the granules significantly depends on the ratio between their size, viscosity and oil concentration.
Article Details
References
Гогина Е.С., Гуринович А.Д., Урецкий Е.А. Ресурсосберегающие технологии промышленного водоснабжения и водоотведения: Справочное пособие. – М.: Изд-во АСВ, 2012. – 312 с.
Найманов А.А., Никиша С.Б., Насонкина Н.Г., Омельченко Н.П., Маслов В.Н., Зотов Н.И., Найманова А.А. Водоснабжение. Макеевка: ООО «Норд Компьютер», 2006. – 654 с.
Урецкий Е.А., Николенко И.В., Мороз В.В. К вопросу динамики фильтрационного осветления на каркасно-засыпных фильтрах// Известия высших учебных заведений. Строительство. – 2022, №3(759). – С. 46-55.
А.с. №1493619 СССР, МКИ4 С02 F1/24. Установка для очистки сточных вод / Дмухайло Е.И., Васин Н.В., Березин С.Е., Яковлев С.В., Мясников И.Н., Барсукова В.В. // Заявка № 4311561/31-26; заявлено 30.03.89; опубл. 15.07.89, Бюл. №28. С. 6.
Епоян С.М., Мовчан С.І. Механизм формирования флотошлама в вертикальной флотокамере // Проблеми водопостачання та гідравліки: Науково-технічний збірник. К.: КНУБА. – 2016. – Випуск 27. –С. 129-137.
Andan S., Hariharan S.I., Chase G.G. Modeling of saturation in coalescence filtration // Microscale Physiochemical Engineering Center The University of Akron, Akron, 2008, vol. 43 (8). PP. 1955–1973.
Dubovskii P.B. Mathematical Theory of Coagulation. Seoul National University, Research Institute of Mathematics, Global Analysis Research Center, 1994. - 169 p.
Escudero C. Kinetic Theory of Two-Species Coagulation // Proceedings of the European Conference on Complex Systems, 2012. PP 1079–108.
Herz M., Knabner P. Modeling and simulation of coagulation according to DLVO-theory in a continuum model for electrolyte solutions // Topics Soft Condensed Matter, Analysis of PDEs, Condensed Matter, Mathematics. [Электронный ресурс]. URL: http://arxiv.org/licenses/nonexclusive-distrib/1.0/ (2016-05-27).
Росев Г.А., Юфин В.А. Очистка сточных вод и вторичное использование нефтепродуктов. – М.: Недра, 1987. – 224 с.
Рулев Н.Н., Седлухо Ю.П. Коллоидно-гидродинамическая теория разделения фаз масляно-водяных эмульсий коалесцирующими фильтрами // Химия и технология воды. – 1990. – Т. 12. № 9. – C. 794-798.
Рулев Н.Н., Седлухо Ю.П. Конфигурация масляной пленки, стекающей повертикальной цепочки сферических гранул загрузки коалесцирующего фильтра // Химия и технология воды. – 1989. – Т. 11. № 11. – С. 971-874.
Рулев Н.Н., Седлухо Ю.П. Роль гидродинамического и гравитационного механизмов в работе коалесцинирующего фильтра // Химия и технология воды. – 1990. – Т. 12. № 5. – С. 971-874.
Рулев Н.Н. Гидродинамика всплывшего пузырька // Коллоидный журнал. – 1980. – Т. 42. №2. – С. 252-263.
Мовчан С.І. Дослідження гідродинаміки течії в’язкої рідини в замкненому контурі апаратів напірної флотації // Проблеми водопостачання та гідравліки: Науково-технічний збірник. К.: КНУБА. – 2017. – Випуск 28. – С. 227-235.