очищення стічних вод

The methods of wastewater treatment from heavy metal ions and dyes are analyzed, and the key advantages of powdered magnetically sensitive carbon nanocomposites as adsorbents are shown. Methods for selecting and preparing raw materials and activators for the synthesis of such nanocomposites are considered, and methods for synthesizing nanocomposites are analyzed. The properties, modeling of adsorption kinetics and isotherms, and efficiency of magnetic carbon nanocomposites for wastewater treatment from dyes and heavy metals are described.

Wastewater contaminated with hexamethylenediamine (HMD), which is discharged into natural reservoirs, causes damage and loss of hydrobionts, worsens the quality of water which becomes unsuitable for use. For wastewater treatment from HMD, the possibility of applying bacterial cultures-destructors which use the HMD as a nutrition source is considered.

This article presents the results of experimental studies on the use of Chlorella microalgae for wastewater treatment from the most common mineral pollutants. The influence of the mineral pollutants, namely anions HSO3- , NO3 - , H2PO4 - on the dynamics of wastewater treatment has been established. Analytical dependences of microalgae biomass growth rate depending on pollutant concentration HSO3- , NO3 - , H2PO4 -   and   are obtained. The values of biomass growth coefficients at the corresponding pollutant concentrations are determined.

The issue of drinking water is one of the most important nowadays for most countries, especially for densely populated and developing countries. The main reasons for such situation are population growth; drought; extraction of minerals, in particular oil; the widespread use of chemicals in the farm, etc., which are today that critical "pressure" on nature that prevents it from fully performing water purification from contamination.

The integral components of wastewaters from chemical and petrochemical enterprises are monocyclic aromatics (benzene, toluene, ethylbenzene, xylene, phenol and their derivatives). The toxic effect of these compounds turns out in violations of the activity of the human endocrine and central nervous system, the change in the species and trophic structure of biocenoses.

Досліджено розклад бензолу під дією ультразвукових випромінювань, сформованих за допомогою ультразвукового магнітострикційного випромінювача. На основі спектрофотометричного аналізу розчинів бензолу, з застосуванням акустичних випромінювань ультразвукового діапазону, встановлено зміну концентрації бензолу в часі. Встановлено, що ініціювання процесу впродовж 300 с оброблення є достатнім для подальшого розкладу бензолу без подальшого накладання кавітаційних полів.