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2 Journal of Ecological Engineering

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Study of the Ecotoxicity of Oil-Containing Wastewater Treated in the Helio Installation by Biotesting Method

Taizhanova Lyailim, Serikbayeva Akmaral, Boranbayeva Asiya, Koibakova Symbat, Aitimova Ainazhan, Myrzabekova Asem

Journal of Ecological Engineering

2024

Vol. 25, nr 4

352--359

The article discusses the ecotoxicological properties of wastewater from a bitumen plant, as well as water treated in a solar installation. It also examines the toxicity of its constituent components. To assess the quality of purified water and its effect on plant vital activity, crops of oats, cucumbers and beets were grown as a test sample. The results of this research showed that water obtained through distillation of wastewater and decomposition of light petroleum fractions using ozone oxidation in a helium-containing setup is suitable for the cultivation of garden crops.

The Influence of Abiotic Factors on Organisms-Hydrobionts of Activated Sludge

Baimukasheva Shynar, Issayeva Akmaral U., Antkowiak Wojciech, Aitimova Ainazhan, Altybayeva Zhansaule, Syrlybekkyzy Samal, Suleimenova Botagoz, Koishina Akmaral

Journal of Ecological Engineering

2023

Vol. 24, nr 10

125--133

Rational use of water resources is one of the urgent problems for arid regions of Kazakhstan. The biocenosis of activated sludge of urban wastewater treatment plants in Zhanaozen periodically encounters stressful situations associated with violation of the operating mode of equipment or emergency discharges of toxicants into the wastewater treatment plant system. It has been established that with sharp fluctuations in the physicochemical parameters of aqueous solutions, protozoal organisms are primarily eliminated from the composition of activated sludge. This pattern was noted with an increase in the content of ammonium nitrogen, phosphorus, monoethanolamine and pH fluctuations in wastewater. Under the conditions of a 10-month period of active insolation in Western Kazakhstan, the species diversity of the algoflora of activated sludge correlates with the duration of daylight hours; it was found that diatoms predominate in the autumn-winter period of the year, whereas blue-green and green algae predominate in the spring-summer period.