Abstract
Bottom Sediments in a River under Acid and Alkaline Wastewater Discharge
Highlights
In Russia, approximately half of the total streamflow volume accounts for small rivers [Kuznetsov & Petrov 2017, Nevskaya et al 2019]
A complex technogenic alkaline sorption-hydroxide barrier was found at the mixing point of acidic river waters and alkaline wastewater of treatment facilities, where the deposited iron hydroxide adsorbs ore minerals, which reduces their outflow into larger rivers and increases the self-purification potential of the river
The purpose of this study was to assess the state of bottom sediments of the Karagaily River, which is a receiver of the drainage and wastewater of the Sibaysky GOK
Summary
In Russia, approximately half of the total streamflow volume accounts for small rivers [Kuznetsov & Petrov 2017, Nevskaya et al 2019]. As the development of chalcopyrite deposits started here in 1635, millions of tons of various types of waste have been accumulated [Plokhov et al 2019] This includes mine dumps, tailings, and technogenic materials over a vast area, represented by atmospheric precipitation and bottom sediments [Pashkevich 2017]. The residues of extraction and processing of sulfide copper-pyritic ores at the Sibay Mining and Processing Plant (Sibaysky GOK) are an example of such mining legacy This was manifested in the ochre coloration of the sediments and the abnormally high concentration of total iron in them (up to 24%) (Table 1). The freshly formed Fe(OH) actively adsorbs ore metals [Lytaeva & Isakov 2017, Pashkevich et al 2017a, Pashkevich et al 2017b] This is indicated by the high concentration of Cu (up to 0.885%) and Zn (up to 0.298%) in bottom sediments (Table 1).
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
