Ways to Increase the Productivity and Quality of Mine Water Treatment

2018 ◽  
Vol 9 (3) ◽  
pp. 423
Author(s):  
Natalia. A GUBINA ◽  
Mikhail A. YLESIN ◽  
Natalya V. KARMANOVSKAYA

The article deals with the rational use of water resources, as well as protecting the environment from the harmful effects of human industrial activities. The aim of the study is to find ways to increase the productivity of existing treatment facilities and the quality of mine water treatment. The proposed solutions will lead to a reduction in discharges of untreated mine waters, a reduction in environmental payments and consumption of fresh water.

Author(s):  
A. A. Kulikova ◽  
Yu. A. Sergeeva ◽  
T. I. Ovchinnikova ◽  
E. I. Khabarova

Formation of mine water inflow compositions is discussed, and the methods of mine water treatment are described. Mine water has different chemistry depending on hydrological, geological and geotechnical factors, as well as on depth of mining. Formation of mine water on higher horizons takes place under the influence of oxidation processes, while reduction processes are typical of lower levels. With an increasing depth, hydrocarbonate water changes into carbonate-sulfate and sulfate-hydrocarbonate water. The main pollutants of mine water are identified, the methods of mine water treatment are reviewed, the criteria of application of mine water treatment methods are specified, and the advantages and disadvantages of the methods are described. In terms of the Kirov Mine, the structure of mine water treatment facilities is considered. It is found that equipment included in the process flow chart ensure good removal of various size suspended solids from water and partially remove iron ions (when its oxidation goes to an insoluble form). However, some heavy metals remain in mine water. This fact is proved by the background concentrations observed in the places of mine water discharge in the Inya river. In the Inya water river, some contaminants exceed MAC, namely, total iron, manganese, copper, ion nitrite, etc. The authors describe the treatment methods and equipment used in coal mines in Kuzbass. There is a wide range of mine water treatment methods, but the technologies in application mainly reduce to mechanical purification which enables efficient removal of suspended solids, oil products, bacterial pollution and, partly, iron. In compliance with the requirements to mine water treatment quality, mines should modernize treatment facilities and introduce new advanced technologies, i.e. provide an integrated solution of the mine water treatment problem, and should anticipate usability of treated mine water and dregs.


Author(s):  
V A Dmitrienko ◽  
S N Armeiskov ◽  
N A Dmitrienko

Author(s):  
Maria Y. Savostyanova ◽  
◽  
Lidia А. Norina ◽  
Arina V. Nikolaeva ◽  
◽  
...  

Retaining of water resources quality is one of the global ecological problems of the modern time. The most promising direction in solving the problem of water resources protection is the reduction of negative environmental influence of waste water from production facilities by upgrading the existing water treatment technologies. To treat utility water, technical and rain water from site facilities of Transneft system entities, the specialists developed and approved standard technological diagrams, which are used in producing treatment facilities. The standard technological diagrams provide for all necessary stages of waste water treatment ensures the reduction of pollution level to normal values. However, during operation of treatment facilities it was established, that to ensure the required quality of waste water treatment with initially high levels of pollution, the new technological solutions are necessary. The author presents the results of scientific-research work, in the context of which the best affordable technologies were identified in the area of the treatment of waste water with increased content of pollutants and non-uniform ingress pattern. On the basis of the research results the technical solutions were developed for optimization of operation of existing waste water treatment facilities by means of using combined treatment of technical and rain waters and utility waste waters and applying bioreactor with movable bed – biochips. The use of bioreactor with movable bed allows the increase in the area of active surface, which facilitates increase and retention of biomass. Biochips are completely immersed into waste waters, and biofilm is formed on the entire volume of immersion area, facilitating retention of biomass and preventing formation of sediments. Due to mixing the floating device with biofilm constantly moves along the whole area of bioreactor, and, in doing so, speeds up biochemical processes and uniformity of treatment. The advantages of a bioreactor with movable bed – its active sludge durability against increased and changing pollutant concentrations, change of waste water temperature and simplicity of application – ensured the possibility of its use for blending utility waters, technical and rain waters.


Author(s):  
Grigory Yu. Sklyarenko ◽  
Vladimir E. Zakrutkin ◽  
Eugeny V. Gibkov

Eastern Donbass, where coal has been mined for over a century, has become a natural-technogenic system (NTS), affecting all components of the natural environment. Among the elements most affected by it are groundwater and surface water exposed to mine waters. The state of the NTS is due to the interaction of technogenic and natural factors such as the geological structure of the territory. For many years, the environmental assessment has taken into account the organized discharge of mine water. At the same time, this region is characterized by widespread development of disjunctive tectonic faults. The hypothesis seems logical that not only the treatment facilities of closed coal mining enterprises, but the faults and associated fracture zones are channels for the drainage of mine water and deep highly mineralized solutions to the surface, where they are unloaded into the river network. Studies carried out in one of the promising areas, where drainage of groundwater takes place through fractured rocks developed along the fault displacement fault, showed their significant impact on the composition of the surface waters of the river Small Nesvetay. Taking into account the very complex tectonics of the Eastern Donbass, it would be logical to assume a similar influence of other numerous disjunctive structures. Their study will contribute to a comprehensive assessment of the region's environment and the adoption of management decisions, and the development of effective measures for water purification and stabilization of the ecological and social situation in the region.


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