mine draining methods

Dewatering of Mine Drainage Sludge

Limestone-Lime Neutralization The inefficient limestone treatment of mine drainage containing large amounts of ferrous iron above 100 mg/1 has in part induced studies of a treatment method that combines limestone and lime into a split treatment system 47 48 Limestone is used to raise the pll of the mine water to about 50 and then lime is...

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Effective Treatment Options for Acid Mine Drainage in the

Acid mine drainage is a condition where as the name suggests the water is made acidic Acidic water is not the only issue caused by acid mine drainage Today there are many methods that are in practice on active mine sites to prevent this from happening This includes capping waste piles diverting water and having on-site treatment with...

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Acid mine drainage

A method of treating mine drainage water including the step of adding a scale control agent to the mine drainage water and optionally adding an oxidizing agent to the mine drainage water and/or precipitating and settling the metals in their hydroxide form from the water The treated water may be safely returned to the environment...

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c Discuss the methods used in mine dewatering Ditching

c Discuss the methods used in mine dewatering Ditching Ditching involves digging a narrow trench in the ground to be used as drainage After a ditch has been done the surface water is diverted from the edge of the pit thereby preventing entry of water into the pit itself which can affect the operations Basically diversion is cheaper than pumping Pumping from sumps In areas where wet...

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PDF Acid mine drainage remediation options a review

Acid mine drainage AMD causes environmental pollution that affects many countries having historic or current mining industri Preventing the formation or the migration of AMD from its source is generally considered to be the preferable option although this is not feasible in many locations and in such cases it is necessary to collect treat and discharge mine water...

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Passive Treatment of Coal Mine Drainage

States for the treatment of contaminated coal mine drainage After reviewing the background of passive treat- ment and the methods used in these studies Chapter I the chemical behavior of mine drainage contaminants is reviewed Chapter 2 This discussion highlights the dif- ference between alkaline and acidic mine water and de-...

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Understanding Mining Waste Management and Disposal Methods

May 21 2020 0183 32 Liquid Mine Waste Mine Water This is produced in different ways at mine sites and has different levels of contamination Water that is exposed to various mining processes is usually acidic and can contaminate the local water sourc This process is called acid mine drainage and it...

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US Patent Application for Method of treating mine drainage

Mar 07 2005 0183 32 32 A method of treating mine drainage water comprising a providing mine drainage water having a pH of from 45 to 10 calcium hardness greater than 100 mg/l of Ca 2 as calcium carbonate alkalinity greater than 100 mg/l as calcium carbonate and greater than 05 mg/l of one or more metal ions or metal salts selected from the group consisting of iron copper zinc lead mercury...

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Mine Drainage

Mine drainage refers to any surface water or groundwater that drains from an active or abandoned mining operation Mine drainage can be high-quality similar to natural waters or contaminated by leftover materials Polluted mine drainage can be extremely...

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Draining the depths

According to local publication Mining Weekly Using borehole pumps in the main shaft is a more cost-effective option for draining a flooded mine than old alternative methods that are costly and labour-intensive The Howden Pumps system can also be installed quickly being in place and pumping within five days of installation work beginning...

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Scientists find efficient way to extract rare earth from

Aug 09 2020 0183 32 Acid mine drainage from coal mines in Ohio Traditional treatment methods involve collecting the AMD in ponds and adding chemicals to neutralize...

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Acid Mine Drainage Ohio University

What can be done to prevent or clean up acid mine drainage...

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PDF The amelioration of acid mine drainage by an in situ

968319 In 1994 a collaborative study was instigated involving Thai Mineralogy of iron precipitates in a con u d acid mine and British government authorities to establish the distribu- drainage wetland tion and geochemical form of As in surface drainage and A D Karathanasis Y L Thompson Soil Science Society aquifer systems in the affected...

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Current approaches for mitigating acid mine drainage

Current approaches for mitigating acid mine drainage Rev Environ Contam Toxicol 2013 226 1-32 doi 101007/978-1-4614-6898-1_1 In this paper we review all of the major methods now used to limit sulfide oxidation These fall into five categories 1 physical barriers 2 bacterial inhibition 3 chemical passivation 4...

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CN102311189B

The invention belongs to the field of wastewater treatment and specially relates to a system for treatment of acid mine drainage and resource recovery of iron aluminum copper and zinc in drainage The system is characterized in that the system is composed of an iron removal system an aluminum removal system a copper removal system a zinc removal system a sedimentation basin 1 and a...

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Optimal design method of sealing depth in methane drainage

PDF The purpose of underground methane drainage technology is to eliminate methane disasters and enable the efficient use of coal mine methane CMM Find read and cite all the research...

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What can be done to prevent or clean up acid mine drainage

Water flowing through active or abandoned mine sites can become polluted by the material being mined 1 By far the most common mine drainage problem is that of acid mine drainage AMD Sulfuric acid is produced when water interacts with sulfur-bearing materials in the presence of oxygen and common bacteria 1 The acidic water formed by this process can dissolve many metals in bioavailable...

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Effective Passive Treatment of Coal Mine Drainage

Effective Passive Treatment of Coal Mine Drainage 1 Robert Hedin Ted Weaver Neil Wolfe George Watzlaf Hedin Environmental 195 Castle Shannon Blvd Pittsburgh PA 15228 USA bhedin hedinenv Abstract Contaminated mine drainage on abandoned coal mine sites can be treated by passive or active treatment techniqu...

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How can acid mine drainage be treated

Treatment of AMD Acid mine drainage sometimes forms when certain minerals in the soil and rocks around mines are exposed to weathering processes during mining These exposed minerals release their contents into creeks causing them to become acidic Passive treatment methods are used most often for treating pollution from abandoned mines...

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Acid Mine Drainage Prevention and Control Options

ACID MINE DRAINAGE PREVENTION AND CONTROL OPTIONS Nural Kuyucak Golder Associates Ltd 1796 Courtwood Crescent Ottawa Ontario Canada K2C 2B5 Phone 1 613 2245864 Fax 1 613 2249928 e-mail nkuyucak golder ABSTRACT Acid mine drainage AMD is one of most significant environmental challenges facing the mining industry worldwide...

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Technical Document Acid Mine Drainage Prediction

all need better tools to manage acid mine drainage at mine sit This report examines acid generation prediction methods as they apply to non-coal mining sit Following a brief review of acid forming processes at mine sites the report summarizes the current methods used to predict acid formation including sampling testing and modeling...

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Hard Rock Mine Reclamation From Prediction to Management

Dec 10 2020 0183 32 This book focuses on the reclamation of waste storage areas which constitute the main source of pollution during and after mine operations and especially issues with acid mine drainage and neutral contaminated drainage Features Provides fundamental information and describes practical methods to reclaim mine-waste facilities...

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Acid Mine Drainage IDE Technologies

Acid Mine Drainage Effects on the Environment Acid mine drainage is a problem because it is usually very acidic and rich in sulfates hardness and dissolved heavy metals The main concerns of regarding acid mine drainage are the contamination surface drinking water source or penetration into the local aquifer but acid mine drainage also has...

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Mine Waste Transfer and Disposal Methods

Acid mine drainage is a heavy contributor to pollution of surface water across the globe AMD is primarily caused when water flows over the sulfide-heavy material forming an acidic solution Water at mine sites is usually heavily monitored and management strategies are used to not only reduce the amount of mine water produced but also to treat...

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Wetland Use in Acid Mine Drainage Remediation

Nov 20 2005 0183 32 One method used to treat acid mine drainage is to divert water through wetlands In wetlands increasing pH and alkalinity influences heavy metal concentrations while microbial and plant activity mineralizes contaminants to form precipitat Different approaches can be...

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Powdered metals extracted from acid mine drainage and

The methods by which such pressed metal articles may be manufactured generally comprise the steps of a providing a powder that contains or consists of metal that has been prepared from acid mine drainage by a method of the present invention b placing the powder that contains or consists of in a die or other from c compacting the powder...

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Acid Mine Drainage and the Techniques to Cleanup this

May 06 2019 0183 32 Acid Mine Drainage is water that has a low pH and filled with heavy metals Acid Mine Drainage AMD is created by groundwater that travels through mines and then rejoins the watershed polluting it AMD is an urgent environmental issue in mining regions as it makes the affected water uninhabitable devastating the ecosystem...

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Minerals and Mine Drainage

of iron in abandoned mine drainage in western Pennsylvania Stauffer et al 2007 For either method the accuracy and precision of the iron results showed good linearity and reproducibility and indicated that both methods are suitable for determining the amount of iron in acid mine drainage...

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Remediation Techniques

Acid Mine Drainage Remediation Options A Review by D Barrie Johnson and Kevin B Halberg Though preventing Acid Mine Drainage is preferable to remediation after the fact is preferable sometimes it is not possible This article reviews the current abiotic and bioremediative strategies used to mitigate AMD and compares the strengths and...

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Acid Mine Drainage

Summary Acid mine drainage AMD refers to the outflow of acidic water from a mining site In most cases this acid comes primarily from oxidation of iron sulfide FeS2 also known as pyrite or fool s gold which is often found in conjunction with valuable metals Acid mine drainage is a major problem with many hardrock mines including almost all mines where the metal ore is bound up with...

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