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Coal mining: Damaged >10,000 km 2 of natural vegetation and agricultural land Consumed >2315 million m 3 of surface water and groundwater: China, Mongolia ...
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Water is important resource for human survival and development. Coal mine wastewater (CMW) is a byproduct of the process of coal mining, which is about 7.0 × 10 10 m 3 in China in 2016. Considering coal mine wastewater includes different ingredients, a new bubble column humidification and dehumidification system is proposed for CMW …
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The combination of FO with RO provided a better performance than individual FO or RO in treating coal mine wastewater. The FO unit served as an effective pre-treatment system prior to RO and the integrated FO–RO systems has a strong potential to successfully eliminate conventional pre-treatment processes for RO. ...
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The SCP report stated: "Through the National Strategy for the Use of Tertiary-treated Wastewater 2040, Oman seeks to expand the construction of sewage treatment plants and extend sewage network lines at a cost of $7 billion, averaging $381 million per year." Treatment and reuse of wastewater are expected to reduce groundwater pollution.
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To meet the practical needs of classified collection, graded treatment, and quality recycling of coal chemical wastewater, and in accordance with the standardization requirements of wastewater resource utilization, the Standardization Administration of China released the national standard GB/T 42,866-2023 ″Guidelines for Coal Chemical …
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Hence, it is important to recover AMD wastewater to reduce environmental pollution and cover the costs associated with post-treatment in coal mining production. …
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In this stride, an experimental study pilot scale study will be conducted in a setup, and The study will investigate the possibility of including various hydrodynamic cavitation and …
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3. Key treatment measures in coal mine wastewater treatment processes 3.1 Pre-settlement tank aeration technology The chemical composition of coal mine wastewater is very complex, and organic matter is one of them, which can be re-moved using various methods, the most common of which is aeration and oxidation. Coal mine effluent …
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Fig. 1 summarises the effects of mining wastewater on agriculture, marine life, soil, and waterbodies. These studies also show how these mining activities are affecting food security and human health. Supplementary Table S1 details the effects of metal ions which, are usually found in mining wastewater, on aquatic animals, humans, …
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Coal chemical wastewater has such characteristics as high concentration of oil, ammonia nitrogen and COD. In this paper, treatment process of coal chemical industry is described mainly, such as ...
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The current situation of China's coal chemical industry faces many problems: 1) This industry causes environmental pollution; 2) employs inadequate environmental management system, wastewater pollution control standards, and energy consumption standards; 3) lacks environmental standards applicable to the coal chemical industry; 4) …
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Understanding the characteristics of mine water quality in coal mining areas is a prerequisite for its treatment and utilization. The main source of mine water is …
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Waste water reuse from municipal and industrial effluents is becoming increasingly important in many areas around the world. Water scarcity, local regulation and environmental impact are driving many industries like coal and copper mines to reuse the large volume of waste water they produce. For example, the Chinese coal industry …
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Due to stringent local regulations and adverse environmental impacts, Vietnamese coal mining industries are under pressure to reuse the large volume of wastewater they produce. To this end, the aim of this study was to add microfiltration (MF) membranes after the conventional Vietnamese coalmine wastewater treatment …
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Various methods have been proposed for the coal mine water treatment: application of nanofiltration as a pretreatment before thermal methods [8], integrated reverse osmosisforward osmosis system ...
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Research on Coal ine Environmental Pollution and Wastewater Treatment Technology AJRCES 2019;11 Email esdamray January 25, 20191 Received: December 17, …
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In this paper, the acid wastewater pollution caused by the closed pit of xiayuanqiaotou Coal Mine is taken as an example. Through hydrogeological survey and field inspection, the geological and hydrogeological conditions of the study area are understood, and the cause and discharge of acid wastewater pollution in the mining area are analyzed. The …
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1. Introduction. Coal has the longest history of use amongst the fossil fuels, with its use as a fuel dating back to 3000 BC in China and Wales [1], and undoubtedly, it still remains the largest and cheapest source of solid fuel across the globe [2]; and there is an estimated 861 billion tonnes of coal reserves worldwide [3].Broadly speaking, coal is a …
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The pollutants in wastewater are trapped by the filter material layer and degraded by the biofilm attached to the filter material. BAF is widely used in the depth treatment section of engineering. More than 60% of the coal chemical wastewater treatment projects in China have adopted the BAF as a core process in the depth …
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The pollutants emissions of coal chemical wastewater treatment systems were calculated by life cycle model, as well as actual industrial operating cost of coal chemical wastewater treatment. The results were shown in Appendix, Table A1, A2. Based on this, the life cycle costs of water treatment were calculated accordingly and …
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Any form of mining is a potential threat to the environment. The extent of environmental degradation depends on the status of mine (working/abandoned), type of deposit, mining and processing methods and the geo-atmospheric conditions. Coal mining has huge impacts to local water resources, both surface and ground water. Surface …
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After initial treatment in the ultrafiltration and decarbonization units (excluded from this analysis) of the pilot plant, the coal-mine effluent containing ions of Na +, Cl −, …
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Nitrate Removal from Coal Mine Water, China ... Removal for Cobalt Mine, DRC. Removal and concentration of uranium from a 20 MLD cobalt rich liquor in the DRC. Gold Mine Wastewater Treatment Plant, Australia ... Antimony Processing Plant Water Recycling, Oman. Treating multiple waste streams using the 0.5MLD plant, producing industrial …
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A critical issue at coal-fired power plants — those remaining and many of those that have shut down — is how to remove selenium from wet scrubber effluent and ash pond wastewater. However, industries such as mining, oil refining, and others face similar difficulties where wastewaters from material extraction or process treatments contain ...
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Acid mine drainage (AMD) in addition to being highly acidic [1] often contains high concentrations of heavy metals such as Fe, Mn, Al and anions like SO 4 2-in addition to elements like Zn, Co, Pb, Cr, Cu, in trace concentrations. The current legislation in South Africa requires the mines to carry out neutralization and clarification of all AMDs before …
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In this study, a new type of hydrophobic cationic polyacrylamide P (AM-DMC-DABC) (PADD) was synthesized by ultrasonic (US)-initiated polymerization, which is used for the separation and removal of coal mine wastewater. The acrylamide (AM), methacryloyloxyethyl trimethyl ammonium chloride (DMC) and acryloyloxyethyl …
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Coal fly ash (CFA) is a byproduct of thermal power plant and collected from flue gases by separator. Composition of CFA depends on the type of coal used and it has both crystalline and amorphous character. It is considered to be an environmental pollutant and used in number of areas. CFA is a useful material and widely used in cement production and as …
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@misc{etde_541497, title = {Treatment of saline wastewater for zero discharge at the Debiensko coal mines in Poland} author = {Ericsson, B, and Hallmans, B} abstractNote = {The paper describes the plant and process built for desalination of drainage water from the coal mines at Debiensko and Budryke in the vicinity of Katowice, Poland …
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Oman, being a semi-arid country, is in great need for extensive reuse practices of treated wastewater effluents. However, these practices need to be …
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Acid mine drainage (AMD) is difficult to treat due to its physicochemical characteristics, such as high pH and high heavy metal concentrations, so it causes great harm to the environment and human health. If acid mine drainage is discharged arbitrarily without treatment, it will lead to a series of environmental problems and cause long …
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