Coalbed methane emissions and drainage methods in ...

In particular, the UIS methane drainage borehole design and sealing are emphasized. Finally, summary and conclusions on all previous investigations are given. This review work could deliver meaningful knowledge of methane emissions and drainage methods in underground mining to related researchers and mining engineers.
Types of subsurface drainage systems | Managing wet soils ...

This Agnote explains the options available for draining excess subsurface water to a specific depth from the soil profile. The most suited drainage system is influenced by topography, rainfall, outfall type and location and especially soil type. More detailed explanations of each drainage type and how to determine which drainage system to use are covered in greater detail in other Agnotes in ...
Dewatering - Wikipedia

Dewatering / d iː ˈ w ɔː t ər ɪ ŋ / is the removal of water from solid material or soil by wet classification, centrifugation, filtration, or similar solid-liquid separation processes, such as removal of residual liquid from a filter cake by a filter press as part of various industrial processes.. Construction dewatering, unwatering, or water control are common terms used to describe ...
Remediation of Acid Mine Drainage-Impacted Water ...

Aug 16, 2015· The formation of acid mine drainage (AMD), a highly acidic and metal-rich solution, is the biggest environmental concern associated with coal and mineral mining. Once produced, AMD can severely impact the surrounding ecosystem due to its acidity, metal toxicity, sedimentation and other deleterious properties.
Acid mine drainage - Wikipedia

Acid mine drainage, acid and metalliferous drainage (AMD), or acid rock drainage (ARD) is the outflow of acidic water from metal mines or coal mines.. Acid rock drainage occurs naturally within some environments as part of the rock weathering process but is exacerbated by large-scale earth disturbances characteristic of mining and other large construction activities, usually within rocks ...
Effective Treatment Options for Acid Mine Drainage in the ...

Effective Treatment Options for Acid Mine Drainage in the Coal Region of West ia ... Kirby, Daniel, "Effective Treatment Options for Acid Mine Drainage in the Coal Region of West ia" (2014).Theses, Dissertations ... Today there are many methods that are in practice on active mine sites to prevent this from happening. This includes ...
Passive Treatment Methods for Acid Water in Pennsylvania

The methods included in this publication may mitigate the effects of acid deposition and acid mine drainage, but prevention of these types of water quality problems remains the highest priority. Combinations of multiple applications of these systems may be required before any watershed-level benefits are achieved.
Active treatment of Acid Mine Drainage: techniques and costs

The least costly and most effective method of controlling Acid Mine Drainage is to prevent its initial formation. On occasion, despite the application of sound mining and reclamation principles, Acid Mine Drainage will be formed and must be treated to meet existing Federal and State standards before it is released from the minesite.
Acid Mine/Rock Drainage | Center for Water, Earth Science ...

Acid mine drainage (AMD) occurs primarily when the mineral ore pyrite (FeS 2) is exposed to water and oxygen from air, producing soluble iron and sulfuric acid.One reason that pyrite is important in AMD generation is that it forms under a variety of conditions and is widespread in different rock types.
A clean way to extract rare earth metals | Harvard John A ...

Jun 17, 2016· Current separation methods involve hundreds of steps and lots of hazardous chemicals. Clarke and Bonifico found inspiration in the living world of bacteria. Bacteria filters have long been used to bioabsorb toxic elements from wastewater or filter metals from mine drainage systems.
Water Control in Underground Mines – Grouting or …

WATER CONTROL IN UNDERGROUND MINES-GROUTING OR DRAINAGE? by V. STRASKRABA, and S. EFFNER TRC HYDRO-GEO CONSULTANTS 165 S. UNION BLVD., SUITE 400 LAKEWOOD, COLORADO, USA 80228 ABSTRACT Mine dewatering and grouting are the two most common methods of ground water control in underground mining. Both methods have advantages and …
Drainage Methods | Introduction | underground COAL

Drainage Methods. Gas drainage for the purpose of eliminating the outburst hazard consists of drilling holes within the seam being mined to allow gas to bleed off from the coal into the hole. In its state, the gas is "adsorbed" onto the coal, a physical bonding largely governed by pressure.
Mine Drainage Technology Initiative - Office of Surface Mining

ABA is an important method for predicting postmining and reclamation water quality and evaluating the potential for production of acid mine drainage. The method, developed in the 1960's and 1970's and continuously refined since (Perry, 1998), assesses the potential for the production of acidic drainage at a mine site by balancing the acid ...
Mine dewatering techniques - SlideShare

Nov 23, 2013· Underground Mine Dewatering Techniques • In underground mines, the conventional approach is to allow groundwater to enter the workings, effectively using the mine itself as a drain • The water entering the mine is passed along roadways (by pumping or gravity) to a deeper part of the mine (sump) or shaft bottom, to be pumped out via shaft or ...
Acid Mine Drainage - Ground Truth Trekking

May 22, 2014· Mine dewatering techniques. Dewatering and groundwater control is an important part of many open pit and underground mines. Effective dewatering is a pre-requisite for safe and efficient mining. Poorly controlled groundwater will waste money, slow down mining and potentially cause adverse environmental impacts. However, techniques are available to successful control groundwater.
Mine Tailings - Ground Truth Trekking

Mine tailings' size and composition depends on the mining method. For hardrock metal mines, tailings are usually a very fine mud or powder, which is left over after ore is crushed and valuable minerals are extracted from it. Tailings may also contain chemicals used for mineral extraction.
Remediation Techniques - Harvard University

Source Control or Remediation of Mine Wastes: Low Cost/Low Maintenance Methods The document is a collection and summarization of literature on metal mining companies utilizing innovative source control and remediation techniques for managing their wastes. Contact names and numbers for most companies are included.
Mine Water Treatment Solutions for Discharge and Re-Use

This paper focusses on the description of reliable, safe and economical treatment of mine water from different types of mines and applications by advanced membrane systems. The applications include mine drainage water from underground mines, intrusion water in open pit mines and excess water from tailing storage facilities.
Acid Mine Drainage (AMD): causes, treatment and case ...

Acid Mine Drainage (AMD) is produced when sulfide-bearing material is exposed to oxygen and water. The production of AMD usually – but not exclusively – occurs in iron sulfide-aggregated rocks. Although this process occurs naturally, mining can promote AMD generation simply through increasing the quantity of sulfides exposed.
Dewatering of Mine Drainage Sludge - EPA

----- Dewatering of Mine Drainage Sludge by Coal Research Bureau West ia University Morgantown, West ia 26506 for the ENVIRONMENTAL PROTECTION AGENCY Project 14010 FJX December, 1971 For sale by the Superintendent of Documents, U.S. Government Office, Washington, D.C. 20402 - Price $1.00
Techniques to correct and prevent acid mine drainage: A review

Techniques to correct and prevent acid mine drainage: A review. Técnicas correctoras y preventivas de las aguas ácidas de mina: Una revisión . Santiago Pozo-Antonio a, Iván Puente-Luna b, Susana Lagüela-López c & María Veiga-Ríos d . a Departamento de Ingeniería de los Recursos Naturales y Medio Ambiente, Universidad de Vigo, España.
mine draining methods - riversidevets.co.za

Acid minedrainage toxicity testing | SpringerLink. Abstract. The BOD inhibition test, the activated sludge respiration inhibition test, and the Microtox® Bioassay procedure were examined for their potential as rapid toxicity screening methods for acid mine drainage (AMD) and for setting toxicity threshold levels in receiving waters.
AN OVERVIEW OF MINING WASTE MANAGEMENT ISSUES IN …

drainage from mining sites. An exhaustive evaluation of the site selection and facility design of any proposed mining waste site is required, and prospective mining wastes must be thoroughly characterized with respect to their acid generation potential, leaching characteristics and chemical, mineralogical and radiological composition.
Some Technical Aspects of Open Pit Mine Dewatering

Drainage Control for Surface Mines 22 Some Technical Aspects of Open Pit Mine Dewatering by V. Straskraba, Senior Mining Hydrogeologist, Dames & Moore, Denver, Colorado, USA In recent years the increase in development of new open pit mines, especially in the Western U.S., is evident.
(PDF) Acid Mine Drainage Control and Treatment | Jeffrey G ...

ACID MINE DRAINAGE CONTROL AND TREATMENT. ... Acid mine drainage from an abandoned sulphide mine in Smolnik, with the flow rates of 5–10 L s−1 and a …
Acid Mine Drainage Control Methods - 911metallurgist.com

In most operations this has meant the use of treatment methods (neutralization) while the technology for the prevention of acid drainage is being developed or refined. To date, underground abatement of acid formation has generally been less expensive but also less effective than surface treatment of the mine …
Box 2 3 Acid Mine Drainage - YouTube

Apr 26, 2015· Case study of Acid Mine Drainage (AMD) and remediation. Case study of Acid Mine Drainage (AMD) and remediation ... Box 2 3 Acid Mine Drainage Engineering Applications in Sustainable Design and ...
Technical Document: Acid Mine Drainage Prediction

Acid Mine Drainage Prediction A CID M INE D RAINAGE P REDICTION . 1. INTRODUCTION The U.S. Environmental Protection Agency (EPA), the states, and the Federal Land Management Agencies all need better tools to manage acid mine drainage at mine sites. This report examines acid generation prediction methods as they apply to non-coal mining sites.