Modeling Changes in the Composition of River Water with Discharged Wastewater: A Case Study in NW Russia

The technogenic impact of the development of the Lomonosov diamond deposit is associated with the discharge of quarry and drainage water into the river, which has a special conservation status. Earlier studies on the composition of bottom sediments showed that there are signs of increased accumulati...

Full description

Saved in:
Bibliographic Details
Published in:Water (Basel) 2022-01, Vol.14 (2), p.165
Main Authors: Malov, Alexander I., Sidkina, Evgeniya S., Mironenko, Mikhail V., Tyshov, Alexey S., Cherkasova, Elena V.
Format: Article
Language:English
Subjects:
Accumulation
Aquifers
Bottom sediments
Case studies
Chemical elements
Composition
Conservation status
Diamonds
Drainage systems
Drainage water
Environmental impact
Equilibrium
Fisheries
Fluvial sediments
Free energy
Heavy metals
Magnesium
Mining industry
Quarries
Radioisotopes
Rivers
Saline water
Sedimentary basins
Sediments
Surface water
Wastewater
Wastewater discharges
Water
Water discharge
Water quality
Watercourses
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The technogenic impact of the development of the Lomonosov diamond deposit is associated with the discharge of quarry and drainage water into the river, which has a special conservation status. Earlier studies on the composition of bottom sediments showed that there are signs of increased accumulation of heavy metals and radionuclides at wastewater discharge sites. The purpose of this work was to predict changes in the composition of surface water and bottom sediment in the river during the further development of mining operations with brackish and salty water captured by drainage systems, the presence of which was established in the zone of their future influence. For this, a simulation of changes in the composition of the water in the river was carried out using the GEOCHEQ software package by minimizing the free energy of the system using a convex simplex algorithm. It was found that the maximum salinity of surface water can reach 1.51 g/L. In this case, the MPC of Cl−, Na+, SO42−, Mg2+, Sr, V, and U can be exceeded for fishery watercourses. The genetic basis of the accumulation of these components in solutions for mixing was considered. According to the calculations, when about 5000 m3/h of drainage water is discharge d into the river, the mass of precipitated chemical elements will be 56–191 t/h, including up to 2.1 t/h of iron; therefore, accumulation in the discharge zone must be controlled.
ISSN:2073-4441
2073-4441
DOI:10.3390/w14020165