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Sunday, July 26, 2020 | History

2 edition of Toxic properties and chemical characteristics of mining effluents in the Northwest Territories found in the catalog.

Toxic properties and chemical characteristics of mining effluents in the Northwest Territories

R. R. Wallace

Toxic properties and chemical characteristics of mining effluents in the Northwest Territories

by R. R. Wallace

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Published by Northwest Territories District Office and Biopassay Laboratory, Environmental Protection Service, Northwest Region, Department of the Environment in [S.l.] .
Written in English


Edition Notes

Statementby R.R. Wallace, M.J. Hardin, and R.H. Weir.
SeriesAQUAMIN collecton -- Study no. 207.
ContributionsHardin, M. J., Weir, R. H.
The Physical Object
Pagination1 v. (various pagings) :
ID Numbers
Open LibraryOL22169847M

1 The amounts of TDS and chloride should be increased by the concentrations of these constituents in the carriage water.. 2 BOD 5 is the biochemical oxygen demand at 20°C over 5 days and is a measure of the biodegradable organic matter in the wastewater.. Source: UN Department of Technical Cooperation for Development () Municipal wastewater also contains a variety of inorganic substances. The heavy use of this highly persistent chemical, however, led to widespread environmental contamination and the accumulation of DDT in humans and wildlife - a phenomenon brought to public attention by Rachel Carson in her book, Silent Spring. A wealth of scientific laboratory and field data have now confirmed research from the s that.

  INTRODUCTION. Diamond mining in the Canadian north has intensified since the discovery of diamonds in the Northwest Territories in (Baker et al. ).Diamondiferous kimberlite can be mined economically at mining involves processing and disposal of large quantities of rock and tailings wastes.   Mining was largely unregulated across much of the West until the s, and today the tunnels of those mines lie abandoned and are often flooded with a toxic .

UNESCO – EOLSS SAMPLE CHAPTERS WASTEWATER RECYCLE, REUSE, AND RECLAMATION – Vol. I - Wastewater Characteristics, Management and Reuse in Mining and Mineral Processing Industries - Hagare B. Dharmappa, Muttucumaru Sivakumar, Raghu N. Singh ©Encyclopedia of Life Support Systems (EOLSS) The mining industries have also caught up with the above principles of waste. The physical and chemical properties of the studied samples are summarized in Table 1. The SG of the samples ranges from 3 to The specific gravity of the REE concentrate () is greater than that of all the lithological units (–) due to the increased content of sulfide and REE-bearing minerals.


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Toxic properties and chemical characteristics of mining effluents in the Northwest Territories by R. R. Wallace Download PDF EPUB FB2

Biological and Chemical Engineering Janu Northern Hard Rock Mining: Effects on Riparian Zones and Technologies for the Management of Mining Effluents in the Northwest Territories” (SENES ), for a complete review of Northern water treatment.

Northern mining properties are mostly situated in remote locations, which. The Ekati Diamond Mine, located approximately km northeast of Yellowknife in Canada's Northwest Territories, uses mechanical crushing and washing processes to extract diamonds from kimberlite ore.

Effluent from diamond mining operations rich in calcium (Ca) has transformed softwater tundra lakes in the Northwest Territories, Canada. Lakes downstream of the Dominion Diamond Corporation Ekati.

Northwest Territories Recommended Procedures for Problem (SLERA) of Aquatic Habitats in the Tri-State Mining District in Missouri, Kansas, and Oklahoma: Preliminary Problem chemical, and biological characteristics of aquatic ecosystems (Environment Canada ; Golder Associates ).

Mining activities no longer take place at this site, but the chemical plant in charge of the liquid effluent treatment is still active The acid effluent is treated by chemical processes with Cited by: 8.

Toxic chemicals used in mining include: cyanide, sulfuric acid, and solvents for separating minerals from ore.

nitric acid. ammonium nitrate and fuel oil (“ANFO”) used in blasting tunnels. heavy metals such as mercury, uranium, and lead.

gasoline, diesel fuel, and exhaust fumes from vehicles and equipment. higher concentrations of toxic metal. 29Salmon exposed to mining effluent (the wastewater released by a mine) had greater mortality rates, and were generally smaller than unexposed salmonSome toxic metals such as cadmium and copper can inhibit the olfactory response, the ability of the fish to smell.

This kind of pollution occurs when chemical agents (such as cyanide or sulphuric acid used by mining companies to separate the target mineral from the ore) spill, leak, or leach from the mine site into nearby water bodies. These chemicals can be highly toxic to.

Mining Methods. There are four key stages of work involved in mining for minerals. These include:Prospecting – The purpose of this stage is to identify areas that are likely to contain mineral deposits.

The work includes geological, geochemical and geophysical surveys (e.g. seismic surveying), aerial surveys, including the taking of samples by low-impact mechanical methods. An independent film "The Creek Runs Red" (on PBS) show the results of acid mine drainage on the small community of Picher, Oklahoma.

More pictures and data are available on the Oklahoma USGS website. Mining provides essential raw materials for an industrialized society. However, it causes serious pollution of surface and groundwater. Proponents may seek guidance on effluent wastewater quality by referencing Canada-wide Strategy for the Management of Municipal Wastewater Effluent () and Guidelines for the Discharge of Treated Municipal Wastewater in the Northwest Territories ().

EPA promulgated the Mineral Mining and Processing Effluent Guidelines and Standards (40 CFR Part ) inand amended the regulation in,and The regulation covers wastewater discharges from mine drainage, mineral processing operations and stormwater runoff.

The Minister of the Environment is responsible for the Canadian Environmental Assessment Act, and administering the Metal Mining Effluent Regulations (MMER) under the Fisheries Act. Mining operations which are not captured under the MMER, such as coal mines, diamond mines, quarries, and other non-metallic mineral mining facilities, are subject.

Mining industry in Sweden is growing and the Sweden of mines predicts a Association threefold increase in mining activities until the year of The main aim of this investigation was to evaluate current chemical and biological monitoring, controlled by the Water Framework Directive, on its ability to detect ecotoxicological impacts in mine.

In drier locations, the mining and processing of ores uses up large volumes of scarce water supplies, and can also pollute groundwater with toxic chemicals. In the U.S., operators are required to acquire a National Pollutant Discharge Elimination System (NPDES) permit for any effluent generated at a mine.

Since the mining industry is still expanding, comprehensive information on the effects of mining activities on the environment is needed. This book provides information on biological and physico-chemical treatments of mining effluents, on factors affecting human health and on environmental effects that have to be taken into account by the mining industry when aiming for sustainable.

effluent from ore refining operations on the mine site (industrial wastewater effluents produced by initial ore concentration and/or metal extraction); post-mine management (water infiltration which, when flooding an abandoned mine, will flow out into the natural environment, for instance).

Elevated levels of arsenic in Yellowknife, NWT, Canada, from historic and recent gold mine operations, are of increasing concern to Yellowknife residents. The study of arsenic in Yellowknife plants is a part of ongoing bioavailability and food chain research.

A variety of plants from Yellowknife were analyzed for total arsenic and water soluble arsenic species. C Mining Waste Release and Environmental Effects Summaries, Draft, MarchU.S.

Environmental Protection Agency. C Mining Sites on the National Priorities List: NPL Summary Report, U.S. Environmental Protection Agency, J C Human Health and Environmental Damages from Mining and Mineral Processing.

Jadwiga Szczepańska, Irena Twardowska, in Waste Management Series, III Mining waste sources and amounts. Mining waste is the high-volume material that originates from the processes of excavation, dressing and further physical and chemical processing of wide range of metalliferous and non-metalliferous minerals by opencast and deep shaft methods.

Chemical analyses of the soil samples. The collected soil samples were dried and then sifted through a sieve with a 2 mm mesh.

In soil prepared this way, basic soil properties were determined: pH in 1 mol KCl by the potentiometric method; granulometric composition (using the Casagrande method modified by Prószyński); the content of organic carbon using the Tiurin method; and the sorption.

Potentially harmful mine waters are known to exhibit a wide range of acid to alkaline conditions (pH − to ) and based on chemical composition, mine water can be characterized in a plethora of ways (e.g., saline, radioactive, corrosive or toxic; Nordstrom ). However, the environmental impacts of mine water are even more diverse.Waste characterisation is the study of the environmental impacts of mining waste during mining, processing and above ground storage of ore prior to treatment.

Waste characterisation needs to consider whether the waste will cause: acid & metalliferous drainage (AMD) saline and/or sodic drainage (i.e. neutral mine drainage) leaching and mobilisation of metals and toxic compound.