The Coyote Percolation Dam impounds water in the Coyote Percolation Pond, an in-stream pond in Coyote Creek just north of Metcalf Road. Operation of the Anderson Dam Tunnel would result in flows well …
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— The percolation tanks are mostly earthen dams with masonry structure only for spillway. The purpose of the percolation tanks is to recharge the ground water storage, and, hence, seepage below the seat …
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Water storages of large size are not called tanks, but they are referred to as reservoirs. Such reservoirs are formed in the river valleys by constructing a barrier or a dam using masonry, concrete or earth depending upon site conditions. Technically, bund is a miniature form of a dam. Fig. 20.1. Schematic Diagram of a Percolation Tank.
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— The zone of influence was around 400 m, 600 m and 500 m respectively for check dam, percolation pond with percolation well arrangement and combined structure from the center point of the structure, which coincides with the findings of Jothiprakash et al.. From the model study, the maximum increase in water level was found to be 3.46 m, …
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catchment-dam pumphouse. 'No Entry' and 'Poisoned Water' signsshould beprominently dis-played. (2)Astormwater trench todealwith rainfall from any catchment areas above the dam, and to divert itround thedam siteand return-water dam, so avoiding any possibility ofcontamination by effluent. (3)Aneffluent-water trench tocol-
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— Improvement of arsenic removal capacity of the treated slime was observed due to deposition of metallic hydroxide/oxyhydroxide on its surface. Successful incorporation of iron ore slime within the membrane matrix was confirmed by X-ray diffractograms. Scanning electron micrographs confirmed the blockage of pores within …
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It is possibly more pronounced here than in any of the other provinces. Mining is a major activity in Gauteng and as a result the province has a large number of slime dams, mine …
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The sand was treated by percolation cyanida tion, whereas the slime was accumulated for lack of a suitable treatment process. In 1894 the decantation process for slime treatment …
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tailings dams and one plant waste. Although slime dams are a health hazard and dangerous, it is difficult for children not to play near them because they are situated close to where they live. The dams are located about 300m from where communities live. In February 1994, a tailing dam failed and flooded the suburb of Merriespruit, killing 17 people
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The sand was treated by percolation cyanida tion, whereas the slime was accumulated for lack of a suitable treatment process. In 1894 the decantation process for slime treatment was introduced. Both accumulated and current slime were leached. This resulted in two discard products; sand which contained about 11 070 minus 75 j-tm, and slime which
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— During vacuum dynamic flash reduction, silver from the arsenic- and antimony-rich anode slime was left behind in the distilland as the silver alloy, and trivalent oxides of arsenic and antimony were evaporated in the distillate. The experimental results showed that the evaporation percent of the arsenic- and antimony-rich anode slime was …
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Retreatment of Gold Residues ScienceDirect. Indam satellite stations may be required to reclaim any remaining slime in lowlying areas After screening to remove coarse trash (typically +2 mm), the slurry is The stability of'slimes dams in the gold mining industry— G ir Donaldson Samples of slimes and crust from a large number of dams were analysed …
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— A large amount of excavated soils with low-level As contamination caused by civil construction projects is of great concern in Japan. This study investigated the chemical speciation and extractability of As in 24 soil samples from the sites affected and unaffected (naturally contaminated) by anthropogenic pollution. The results of As K-edge XANES …
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ization slime was proposed with a view to eliminating its antimony and arsenic contents in a sustainable manner. Keywords Decopperization slime Antimony Arsenic Alkaline sulfide Rechtschaffner design Response contour plot Introduction Copper production has continued to increase due to its significance in the economy development. As a conse-
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— 1.1. What Are Mine Tailings? An Initial Scope in an Uncertainty and Complex World. The initial step in mineral processing involves crushing and grinding ore to produce a suitable particle size for further metallurgical processing using physical and chemical separation methods [].Physical separation processes take advantage of the …
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— 2.2 Column Percolation Tests ISO Upflow Column Test. A5 cm-inner diameter and 30 cm-height acrylic resin column was equipped for the upflow percolation test (Fig. 1).This test followed the leaching procedure for subsequent chemical and ecotoxicological testing of soil and soil materials under ISO/TS 21268-3 ().The sample …
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the surface of the dam is drawn off through the penstock pipe and dis-charged into the return water dam from where . it . is treated, if . necessary, and recycled. Water falling …
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— Additional data from refineries worldwide, coupled with experimental approaches, has advanced understanding of slime precipitation, slime compositions, …
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Semantic Scholar extracted view of "Separation of arsenic from tin anode slime by vacuum distillation" by Hanman Kou et al. Skip to search form Skip to main content Skip to account menu. Semantic Scholar's Logo. Search 219,105,523 papers from all fields of …
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— Arsenic in the soil can leach into groundwater and contaminate drinking water, posing a serious risk to human health. The stabilization of arsenic in contaminated soil is one of the immobilization …
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On the other hand, available arsenic content in soil decreased with increasing dose of iron slime. Available arsenic concentration in soil is declined by 34.6, 45.9 and 46.7% from their respective initial arsenic status in low, medium and high arsenic status soil with the application of 20 g iron slime kg−1 soil.
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— Introduction Contamination of industrial and municipal water supplies with arsenic (As), selenium (Se), and mercury (Hg) can occur from natural deposits, industrial discharge, runoff from mining ...
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Semantic Scholar extracted view of "An efficient and clean method for the selective separation of arsenic from scrap copper anode slime containing high arsenic and tin" by Shuo Liu et al. Skip to search form Skip to main content Skip to account menu. Semantic Scholar's Logo. Search 220,830,730 papers from all fields of science ...
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— Anode slime is an important material of recycling precious metals. Up to now, treating the arsenic- and antimony-rich anode slime by conventional processes has the following problems: its economic and environmental effect is less than satisfactory, and the removal effect of arsenic and antimony from anode slime in present processes is not all …
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— A process was proposed to convert and separate selenium and arsenic in copper anode slime (CAS) by low-temperature alkali fusion process. Central composite design was employed to optimize the effective parameters, in which NaOH/CAS mass ratio, fusion temperature and fusion time were selected as variables, and the conversion ratio …
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— From Fig. 1, the saturated vapor pressure of arsenic at 600–900 K is significantly higher than that of tin, antimony, bismuth and silver, indicating that arsenic will evaporate or sublimate in the system.As for other components in the TAS, such as Fe and Cu, their saturated vapor pressures are much lower than that of arsenic at the same …
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— The anode slime with high arsenic concentration was pretreated by circular leaching process using sodium hydroxide solution. Then, the arsenic in the leaching solution can be further treated by precipitation experiments. The experimental procedure for removal and stabilizing arsenic is shown in Fig. 1. The physicochemical properties and ...
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adshelp[at]cfa.harvard.edu The ADS is operated by the Smithsonian Astrophysical Observatory under NASA Cooperative Agreement NNX16AC86A
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