scholarly journals Influence of climatic and hydrodynamic factors on the quarry water purification process from nitrogen compounds

2020 ◽  
Vol 177 ◽  
pp. 04008
Author(s):  
Alexander Khokhryakov ◽  
Gennady Studenok ◽  
Andrey Studenok ◽  
Alexander Olkhovsky ◽  
Vladimir Boltyrov
Keyword(s):  
Treatment Method ◽  
Open Pit ◽  
Nitrogen Compounds ◽  
Purification Process ◽  
Open Pit Mines ◽  
Mining Enterprise ◽  
Water Conditioning ◽  
Promising Treatment ◽  
Hydrodynamic Factors ◽  
Drainage Waters

The nitrogen compounds, namely ammonium, nitrite and nitrate nitrogen, are the main substances polluting the quarry and drainage waters of mining enterprises that use the ammonium nitrate-based explosives for drilling-and-blasting rock mass preparation. In accordance with the legislation, such waters are subject to treatment prior to discharge into the water bodies. At the mining enterprises, the promising treatment method is the treated water conditioning in the flooded abandoned open-pit mines, during which the natural microbiological nitrification of ammonium and nitrite nitrogen contained in the quarry drainage waters is performed with an efficiency of more than 95%. The article discusses the influence of natural climatic and hydrodynamic factors on the nitrification process according to the results of a purification process study that has been performed since 2014 until the present time at a large mining enterprise. The relevant conclusions and recommendations are given.

The choice of a method for protecting the environment from pollution when mining asbestos-containing ore

2020 ◽  
pp. 66-71
Author(s):  
A. V. Khokhryakov ◽  
G. A. Studenok ◽  
A. G. Studenok ◽  
A. M. Olkhovsky
Keyword(s):  
Negative Impact ◽  
Raw Materials ◽  
Open Pit ◽  
Nitrogen Compounds ◽  
Chrysotile Asbestos ◽  
Natural Factors ◽  
Mine Workings ◽  
The Relationship ◽  
Drainage Waters

The article analyzes the mechanism of contamination of quarry waters during drilling and blasting preparation of asbestos-containing raw materials under the influence of man-made and natural factors, which can serve as a basis for making specific technological decisions that reduce the negative impact on the environment during the development of chrysotile-asbestos deposits. The dependence of the intake of nitrogen compounds in quarry waters on the consumption of explosives and the volume of formation of quarry waters is presented. The article shows the possibility of using the purification of quarry water in the spent open mine workings, the sides of which are composed of plastic asbestos-containing rocks. The relationship between the volumes of internaldumping and contamination of open pit drainage waters is analyzed.

scholarly journals Wastewater treatment of mining enterprises from nitrogen compounds in the Arctic

2020 ◽  
Vol 84 ◽  
pp. 04001
Author(s):  
Anna Korotaeva
Keyword(s):  
Wastewater Treatment ◽  
Biological Treatment ◽  
Aquatic Organisms ◽  
Treatment Method ◽  
Open Pit ◽  
The Arctic ◽  
Open Pit Mining ◽  
Nitrogen Compounds ◽  
Wastewater Pollution ◽  
The Moment

Open pit mining using explosives based on ammonium nitrate leads to wastewater pollution with nitrogen compounds. In case of insufficient wastewater treatment, pollutants enter surface-water bodies. Excessive concentration of nitrogen compounds in water leads to the development of the process of eutrophication, which adversely affects the vital activity of aquatic organisms and humans. At the moment, a common method of wastewater treatment from nitrogen compounds is a biological treatment method using devices such as aeration chambers, oxidation tanks and slim filters. An alternative option for biological treatment is the introduction of algae into wastewater. In the conditions of the Arctic, it is difficult to carry out biological treatment using algae due to low temperatures throughout the year. In this study, the feasibility of using the frost-resistant strain Chlorella kessleri VKPM A1-l1ARW for the effluents treatment from nitrogen compounds was tested. Model solutions with a known nitrates concentration were used. Experiments were carried out at two specified temperatures for comparison. The results showed that by the end of the 10-day experiment, the nitrates extraction efficiency at standard temperature (20 °C) was from 40.3% to 71.8%, at low temperature (3 °C) was from 30.4% to 73.6%.

Management and engineering solutions to improve stripping equipment efficiency in Chernogorksy open pit mine

2018 ◽  
pp. 36-48
Author(s):  
G. N. Shapovalenko ◽  
S. N. Radionov ◽  
V. V. Gorbunov ◽  
V. A. Khazhiev ◽  
V. Yu. Zalyadnov ◽  
...  
Keyword(s):  
Open Pit Mine ◽  
Open Pit ◽  
High Concentration ◽  
Open Pit Mines ◽  
Blasting Operation ◽  
Internal Dump ◽  
Mining Conditions ◽  
Mining Front ◽  
Comparison Of Equipment

Chernogosky open pit mine integrates truck-and-shovel system of mining with overburden rehandling to internal dump with a set of walking excavators for rehandling of overburden to mined-out area of the pit. It is possible to improve efficiency of stripping in the conditions of Chernogorsky OPM by reducing percentage of stripping with more expensive handling system. The relevant research and solutions to this effect are presented in this article. Comparative characterization of mining conditions and parameters of mining systems applied is given for open pit mines Chernogorsky, Turnui, Nazarovsky, Vostochno-Beisky and Izykh. The comparative analysis points at the need to account for difficulty of mining and process sites in comparison of equipment productivity. High concentration of mining machines, which is conditioned by narrow mining front and simultaneous operation of five faces, as well as blasting operation implemented every 1-2 days, are recognized as the main constraints of excavator capacity in mining with direct dumping in Chernogorsky open pit mine. The management and engineering solutions implemented in the mine and resulted in higher efficiency of draglines are described.

MECHANICAL/HYDRAULIC ENGINEERING IN RECLAMATION OF OPEN PIT MINES

2018 ◽  
Vol 5 ◽  
pp. 59-64
Author(s):  
P.A. Prokhorov ◽  
◽  
Val.V. Sencus ◽  
A.L. Mansurov ◽  
◽  
...  
Keyword(s):  
Hydraulic Engineering ◽  
Open Pit ◽  
Open Pit Mines

Hydraulic excavators in coal-rich zones of open pit mines in Kuzbass: Experience and prospects

2019 ◽  
Vol 4 ◽  
pp. 152-160
Author(s):  
L.I. Kantovich ◽  
◽  
O.I. Litvin ◽  
A.A. Khoreshok ◽  
E.A. Tyuleneva ◽  
...  
Keyword(s):  
Open Pit ◽  
Open Pit Mines ◽  
Hydraulic Excavators

scholarly journals A GIS Software Module for Environmental Impact Assessment of the Open Pit Mining Projects for Small Mining Operators in Kazakhstan

2021 ◽  
Vol 13 (12) ◽  
pp. 6971
Author(s):  
Mikhail Zarubin ◽  
Larissa Statsenko ◽  
Pavel Spiridonov ◽  
Venera Zarubina ◽  
Noune Melkoumian ◽  
...  
Keyword(s):  
Environmental Impact ◽  
Impact Assessment ◽  
Environmental Impact Assessment ◽  
Mining Industry ◽  
Open Pit ◽  
Open Pit Mining ◽  
Software Module ◽  
Mining Operations ◽  
Open Pit Mines ◽  
Gis Software

This research article presents a software module for the environmental impact assessment (EIA) of open pit mines. The EIA software module has been developed based on the comprehensive examination of both country-specific (namely, Kazakhstan) and current international regulatory frameworks, legislation and EIA methodologies. EIA frameworks and methods have been critically evaluated, and mathematical models have been developed and implemented in the GIS software module ‘3D Quarry’. The proposed methodology and software module allows for optimised EIA calculations of open pit mines, aiming to minimise the negative impacts on the environment. The study presents an original methodology laid out as a basis for a software module for environmental impact assessment on atmosphere, water basins, soil and subsoil, tailored to the context of mining operations in Kazakhstan. The proposed software module offers an alternative to commercial off-the-shelf software packages currently used in the mining industry and is suitable for small mining operators in post-Soviet countries. It is anticipated that applications of the proposed software module will enable the transition to sustainable development in the Kazakh mining industry.

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