Kinetic Model for Flotation Treatment Process Using Ejection System of Aeration with Disperser

Ksenofontov, B. S.; Antonova, E.

doi:10.18412/1816-0395-2016-12-9-13

Cited by 8 publications

(2 citation statements)

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“…For example, in the work (Ksenofontov, 2018;Ksenofontov & Goncharenko, 2018), a scheme is proposed that excludes the transportation of toxic substances in sludge into the environment. The obtained experimental data correlate well enough with the existing methods (Ksenofontov, 2019;Ksenofontov & Antonova, 2016). However, there are factors that cause soil fatigue.…”

Section: Introductionsupporting

confidence: 73%

Assessment Of The Sanitary Condition Of Soils Disturbed By Unauthorized Waste Disposal

Stepanova¹

2021

European Proceedings of Social and Behavioural Sciences

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This article represents the research of the impact of violations in the storage, warehousing and usage of wastes including animal wastes on the sanitary state of soils. The above research was held to determine the degree of soil's biological pollution including sanitary and bacteriological indexes. Due to the fact that soil is inhabited by countless plant and animal organisms with various activities that participate in the formation and evolution of the soil as factors in the synthesis of humic substances and determining soil fertility. The assessment of the degree of accumulation of sanitary-indicative organisms of the Escherichia coli group has been carried out. The value of the enterococcus index in the upper soil layer has been established in the conditions of violation of the requirements for waste disposal and storage. The degree of biological contamination of soils was established when solid and liquid wastes of a livestock complex were placed on them. The level of contamination by pathogenic bacteria of the E. coli group and faecal streptococcus in the upper soil layer was revealed. The objects and methods of research were sodpodzolic and grey forest soils of the territories of agricultural lands. Taking into account the possibility of the production of toxic substances by microorganisms-mycotoxins during soil fatigue and the prevailing environmental conditions conducive to the manifestation of this process, the danger of soil contamination with mycotoxins that pose a serious threat to humanity becomes real.

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Section: Introductionsupporting

confidence: 73%

Assessment Of The Sanitary Condition Of Soils Disturbed By Unauthorized Waste Disposal

Stepanova¹

2021

European Proceedings of Social and Behavioural Sciences

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“…On the other hand, for pneumatic (IAF) systems, Al-Maliky [92] showed an enhancement of treatment efficiency of 10-17% with increase of temperature up to 80-84°C. However, the application of rubber aerators in a pneumatic aeration system for the treatment of highly contaminated oily water at the temperatures more than 50°С leads to change in the rubber properties: it loses elasticity and prevents the generation of bubbles of the required sizes [93], and therefore, treatment efficiency is reduced.…”

Section: Factors That Influence the Choice Of Flotator Type 231 Param...mentioning

confidence: 99%

Common Issues in Aeration System Choice for Flotation Wastewater Treatment

Сазонов

Antonova

2023

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Flotation wastewater treatment is widely used in various treatment systems. The choice of aeration system plays a considerable role in the development of highly efficient flotation tanks. The objective of this work is to point out factors that influence the choice of flotator type, and to offer recommendations based on literature review and data analysis. In this paper, the various types of aeration systems used in flotation tanks are considered: mechanical, pneumatic, pneumohydraulic and ejection systems as well as dissolved air flotation and electroflotation systems. Their main advantages and disadvantages are pointed out. The specific features of flotation tank constructions are considered. The factors that influence the choice of aeration system such as the parameters of wastewater (pH, conductivity, temperature), requirements for the quality of treated water, reliability and simplicity of maintenance, capital and operating costs are defined. The peculiarities of various aeration system applications in different conditions are revealed. A comparison of the energy consumption of the considered systems of aeration is presented. In conclusion, practical recommendations for the choice of aeration system depending on various factors are offered.

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Environmental Impact Assessment of Technogenesis on Genetic Features, Composition and Properties of Light Gray Forest Soils

Stepanova¹,

Pisareva

Bolmat³

2021

IOP Conf. Ser.: Earth Environ. Sci.

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The paper presents an environmental impact assessment of technogenesis (waste slag from metallurgical production) on the genetic characteristics of light gray forest soils. To study the degree of technogenic impact of the slag dump on the degradation changes in the morphological characteristics and composition of light gray forest soils in the area of action of the slag dump of fines of aluminum casting on the example of a slag dump in the village of Bolshoye Dumchino, Mtsensk district of the Oryol region, field and laboratory studies of soil samples taken at different distances from the slag dump - 20 m, 150 m, 300 m, 450 m. The soil cover of the territory in the area of the slag dump is represented by light gray forest soils, which are characterized by the following typical diagnostic horizons with characteristic morphological features at different distances from the dump. This research aims to establish the degree of anthropogenic transformation of light gray forest soils of agricultural areas, disturbed by the technogenic impact of metallurgical waste. The tasks were solved, as a result of which the influence of the slag dump on the typical diagnostic features of the genetic horizons of light gray forest soils was established. The nature of the change in the aggregate and granulometric composition in the profile of light gray forest soils in the area of influence of the slag dump was studied. An assessment of the degree of degradation changes in the physicochemical properties of light gray forest soils at different distances from the pollution source is given.

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Kinetic Model for Flotation Treatment Process Using Ejection System of Aeration with Disperser

Cited by 8 publications

References 0 publications

Assessment Of The Sanitary Condition Of Soils Disturbed By Unauthorized Waste Disposal

Assessment Of The Sanitary Condition Of Soils Disturbed By Unauthorized Waste Disposal

Common Issues in Aeration System Choice for Flotation Wastewater Treatment

Environmental Impact Assessment of Technogenesis on Genetic Features, Composition and Properties of Light Gray Forest Soils

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