Dissolved copper and zinc concentration and ph levels. Fourth international conference on acid rock drainage. Pdf an overview of municipal solid waste management and. Under acidic conditions, the molar ratio of sulfate to calcium should be equal to or. Appendix 1 solids composition of rock from prediction piles and limestone additiion tanks table ai. Predicting acid rock drainage from a nickel mine waste piles and metal levels in surrounding soils artwell kanda1,george nyamadzawo 1, jephita gotosa1, nathan nyamutora1, willis gwenzi2 1department of environmental science, bindura university of science education, p. Landfill expansion with reinforced walls this content is locationspecific, and products or services listed may not be available in your region.
A simple field leach test to assess potential leaching of soluble constituents from mine wastes, soils, and other geologic materials introduction rainwater or snowmeltinduced leaching of major elements, trace elements, and acid from mine wastes or naturally mineralized areas and the effects of. Sanitary landfill leachate is a highly and complex polluted wastewater. A study on contamination of ground and surface water bodies by. Soil density and moisture a soils maximum density corresponds to the optimum moisture content, the minimum permeability to a moisture content wet of optimum. Sobana department of bio science, vavuniya campus, university of jaffna introduction solid waste management can be done in many ways. Nitrogen recovery from a stabilized municipal landfill. Data from column leaching tests have been used to develop selective handling and placement strategies for waste rock, to. Nilexs main challenge was trying to maximize the amount of additional capacity for the landfill within the landfill boundaries, while providing an aesthetically pleasing wall adjacent to argonaut road. Mobilization of metaloid oxyanions through circumneutral mine. Most studies on the weathering of mine waste rock focus on the generation of. All chemicals in this study were of analytical reagent grade from merck co.
This guidance lists and summarizes the citations in nr 500 to 520 and associated statutes which are specific to industrial solid waste landfills. Scaling laboratory sulfate release rates to operational waste rock piles kim lapakko and mike olson minnesota department of natural resources, usa abstract there is little agreement on scaling factors to be used for extrapolating laboratory dissolution test results for predicting solute release rates from proposed waste rock piles in the field. Exercise 4 mining of phosphate rock and treatment of the waste as will be discussed in class, phosphate rock is mined near the gulf coast of florida by breaking up phosphate rock primarily hydroxyapatite, ca5ohpo43 with draglines and then converting it into a slurry with jets of water. Advanced oxidation processes for treatment of leachate.
Impact of landfill leachate on iron release from northwest. Characterization, weathering, and stability virginia t. Why waste rock piles will seep for many years after being covered. Exercise 4 mining of phosphate rock and treatment of the waste. Pdf fourteen samples of pyritebearing waste rock were characterized particle. Selenium leaching from coal waste rock in the elk valley, b. Canada may 31 june 6,1997 proceedings volume i ubtib hannover 117 118 206 89. Holden and i have been working with a community organization in providence that is interested in estimating the weight and volume of waste piles produced by a construction and demolition facility. Evolution of acid mine drainage from a coal waste rock pile.
In this study, long term numerical simulations of unsaturated flow in a large waste rock pile are conducted to investigate. This liquid, leachate, is hazardous and must be collected for disposal. There is no listing in code or statute of regulatory requirements specific to industrial solid waste landfills. These problems are related to the flow of water through the waste rock. Estimation of chemical composition of a solid waste sample. The advantage of uv assisted fenton process is lesser generation of sludge as the iron consumed is very less.
The leachaid landfill pump fits inside a piezometer or monitoring well and lowers the cost of leachate and condensate management. Estimate the number of cubic yards of material in a waste stockpile that has the following measures and outline. Numerical simulation of water flow in a large waste rock pile. Epa600r04301 december 2004 monitoring approaches for landfill bioreactors by thabet tolaymat, ph. Present and longterm composition of msw landfill leachate. Estimating plantavailable nitrogen in biosolids a1 appendix a calculating biosolids application rates for agriculture a. Rock types differ in their surface area and therefore their relative contribution to the overall waste rock composition. Its quality is the result of biological, chemical and physical processes in landfills combined with the specific waste composition and the landfill water regime. The exposed ap of waste rock may be higher than predicted by analysis of premine drill core or preblast hole chips, if sulphides preferentially report to waste rock fines table 55. A comparison of the carbonate molar ratio cmr to the average sulphate release rates figure 1 indicates that the sitespecific criterion for detour west waste rock should be decreased to 1. One test pile will contain rock with a sulfide content of pdf available october 1999 with 244 reads how we measure reads. The determination of geotechnical charactertiscs of waste rock is essential for addressing issues of in situ hydrology and the stability of steep and highstanding dumps. Table 3 presents the flux of each component and their ratio to ppt %.
Scaling laboratory sulfate release rates to operational waste. Smith2,3, matthew neuner4, michael gupton4, mandy moore3, brenda lee bailey3, david w. There is no listing in code or statute of regulatory requirements specific to. Materials and methods woodwaste pile and leachate pool the woodwaste pile of concern was a large open storage of sawdust, shredded bark and roots, offspecification wood chips and process trimmings. Acidbase accounting aba is the balance between the acidproduction and acidconsumption properties of a mine waste material. Waste rock is the large volume of broken rock and low grade ore materials tend to create potential problems, such as acid mine drainage amd, leaching of heavy metals, and slope stability problems. At dlm, an operational sitespecific criterion of 1. Thickness of clay liner d in m, coefficient of permeability k in myear, porosity. Hall,1 arash masbough,1 kevin frankowski1 and sheldon j. While the technologies used in most landfills are similar, the exact sequence and type of materials may differ from site to site depending on design, location, climate and underlying. Based on laboratory investigations and num erical modeling, this paper gives the geotechnical properties of a selected waste rock under saturated and unsaturated conditions.
Dmwm reissued the document to make it consistent with current formatting and publication standards after evaluating the content and determining it is still relevant and appropriate. Use of a garbage grinder can shorten the interval between pumpings of the septic tank, and could produce high strength effluent. Landfill expansion with reinforced walls nilex geotextile. Biosolids production projections dry metric tonnes. D3987 852004 standard test method for shake extraction of solid waste with water, leaching, waste, sitespecific, water. With increasing leachate effluent quality standards the efforts for leachate treatment also increase. When waste is placed in landfills, over time the waste decomposes and sweats. Extremely slow cycle that occurs over millions of years. Samples from the wasterock piles were collected from trenches mclemore et al.
So the ionic strength of wastewaters must be decreased by an acid such as h 2 so 4 before flotation. Application of column leaching tests to predict seepage water. Assessment of landfill sites for solid waste management in delta state, nigeria j. This illustration depicts a cross section of the standard environmental protection technologies of modern landfills. Chemical precipitation within pyritic waste rock margarete kalin a, bryn harris b aboojum research limited. Cavan county council operate corranure landfill waste licence w007702. One test pile will contain rock with a sulfide content of pile contains rock. Subsequently, the application of ion flotation for cadmium ions removal from aqueous dilute solutions seems to be efficient. Industrial solid waste landfills specific regulatory. Tannin and lignin accounted for 33 to 45 % chemical oxygen demand.
In fact, it can be observed that at the stoichiometric molar ratio, the magnesium concentration measured in the supernatant was very low lower than 2 mgl, while the phosphorus concentration was as high as 2274 mgl, indicating a deficiency of. Fourth international conference on acid rock drainage vancouver, b. Biological approach for the treatment of pulp and paper. D2234d2234m practice for collection of a gross sample of. Pdf selenium leaching from coal waste rock in the elk. Among these methods composting is one way of recycling solid wastes which minimizes environmental pollution. Rates of pyrite oxidation were determined by dividing molar rates of sulfate. Impact of declining oxygen conditions on metalloid release from. Industrial solid waste landfills specific regulatory requirements page 1. Pdf pyrite oxidation rates from laboratory tests on waste rock. Aug 14, 2011 by leachater on august 14, 2011 in leachate management landfill cell ready to accept waste when designing any leachate management system the assessment of the most economic method for leachate treatment and disposal is heavily dependent upon the flow rate and duration of flow.
Design and operation of waste rock piles at noncoal mines. Cavan county council corranure landfill facility leachate management plan 2008. Numerical simulation of water flow in a large waste rock. New approaches for waste rock stockpiles a final report to the minerals coordinating committee june 30, 2003 kim lapakko david antonson john folman andrea johnson department of natural resources minnesota department of natural resources division of lands and minerals 500 lafayette road, box 45 st. Nitrogen recovery from a stabilized municipal landfill leachate. If you can see the bottom of the pile clearly, there is a way to work around possible elevation changes. Characterization of leachate from a wood waste file. Mclemore, ahmadali fakhimi, dirk van zyl, gertrude f. Phosphate was added to the test drums at a ratio of 115 kg nprt of waste rock or 8. A simple field leach test to assess potential leaching of.
High concentration of cod,bod5,heavy metals,nh4n, low bod5cod ratio and the lack of nutrients in the methanogenic phase have restricted the application of biological treatment processes according to the nature of leachate. Municipal solid waste landfill leachate treatment by fenton. The concerning of solid waste leachate may be related to presence of. Leaching performance of concrete based on studies of samples. Campbell river landfill reinforced walls project profile 884. This paper discusses the effects of a potential leachate leakage from a municipal solid waste landfill, situated at mavallipura, bangalore, india. From the laboratory to the canadian arctic1 lianna j. Type i pile, a type iii pile and a type iii pile with engineered dry covers were. Pdf construction of two largescale waste rock piles in a.
Characterization of leachate from a woodwaste pile wendong tao,1 ken j. Waste rock piles wrps are commonly remediated with. Leachate was generated when precipitation percolated through a pile of woodwaste, including trimmings, offspecification wood chips, shredded bark and roots, and sawdust from several cedar. According to determination of toc, raw leachate contained the largest concentration of organic substances expressed as carbon in the. Pdf construction of two largescale waste rock piles in. Predicted decline in kidston waste rock pile toe seepage. The rate of application was ultimately determined by eco. Summary statistics of sulfur analyses from muck boxes. Once a year, or as approved by the commissioner, representative samples of leachate shall be. It is used to collect mineral deposits that are close to the surface in horizontal beds. Please contact a nilex office to check availability. Prevention of sulfide oxidation in waste rock by the addition of lime. Controlling mine drainage problemsnew approaches for waste.
This work was done on behalf of mend and sponsored by. Other researchers performed various studies about landfill leachate treatment by fenton process and due to the characteristic of leachate and conditions of each study, different results have been obtained 7,18,2224,26. Construction of two largescale waste rock piles in a continuous permafrost region. The material has been accumulated by trucks and other equipment driving up onto the pile by a road that was formed up the side of the waste site. By leachater on august 14, 2011 in leachate management. The leachate had a 5day biochemical oxygen demand to chemical oxygen demand ratio of 0.
Although several studies have been done on the treatment of landfill leachates by fenton and photofenton processes, there. Standard test method for shake extraction of solid waste. Developing methods of estimating the volume and weight of waste piles through balloon mapping. Evolution of leachate ph, eh, ec, and so4 concentrations and sfe molar ratio formed upon leaching of highly sulfidic waste rock under. Estimate the number of cubic yards of material in a waste.
The p no recovered liquid is present, reducing air consumption and extending pump life. Handbook for waste rock sampling techniques mend project 4. Citeseerx characterization of leachate from a woodwaste pile. An assessment of laboratory leaching tests for predicting the impacts of fill material on ground water and surface water quality a report to the legislature december 2003 publication no. Assessment of landfill sites for solid waste management in. Landfill leachate treatment using activated carbon obtained from. Us epa monitoring approaches for landfill bioreactors. Characterization of contaminated soil and surface water. Learn vocabulary, terms, and more with flashcards, games, and other study tools. May 23, 2015 waste rock is the large volume of broken rock and low grade ore materials tend to create potential problems, such as acid mine drainage amd, leaching of heavy metals, and slope stability problems. A written permission or approval shall be obtained from a treatment plant indicating that they will. Volatile fatty acids accounted for 6 to 34 % chemical oxygen demand, varying as the pile developed and with woodwaste age. How to sample a waste rock pile usgs field leach test csm work.
Measure not only the angle from your eye to the top of the pile, but also the angle from your eye to the base of the pile again, this will only work if the bottom of the pile is also visible. Evaluation of acid generating rock and acid consuming rock. Once in contact with decomposing solid waste, the percolating water becomes. The removal of cadmium ions by ion flotation process is very sensitive to the ionic strength. Weathering, erosion, transportation, deposition sedimentary rockinto ocean or limestone, heat pressure and stress metamorphic rock which either beings to weather again or melts and becomes magma, cools and becomes igneous rock. Caution for application of fukuoka method semiaerobic. Variables in the testing methodologies have included sample composition mixed versus monolithologic, water. A leachate is any liquid that, in the course of passing through matter, extracts soluble or.
Duff2 1department of civil engineering, university of british columbia, 6250 applied science lane, vancouver, british columbia v6t 1z4. It was located adjacent to the fraser river in mission, british columbia. Environmental pollution caused by the landfill leachate has been one of the typical dilemmas of landfilling method. In strip mining, the overburden is removed, and then lots of small holes are drilled in the rock just over the ore.
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