Tim Danhey, Biomost, "Operations and Maintenance Panel"

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In this three part series, three speakers will present three different approaches to operations maintenance of AMD treatment systems. Learn how they deal with touch O&M issues.

Environnement Business Technologie

OM&R FOR THE MINING
INDUSTRY
Tim Danehy, QEP
BioMost, Inc., Mining and Reclamation Services
Co-Authors: Ryan Mahony,Cody “ Buck” Neely, BJ Page, Shaun Busler,
Cliff Denholm, Margaret Dunn
AMERIKOHL MINING
Zelmore System (2001)
www.biomost.com
PA AMR CONFERENCE
“Collaboration is Essential”
June 27, 2014
State College, PA

BMI EXPERIENCE
- DESIGNING AND INSTALLING PASSIVE SYSTEMS SINCE 1998
- OVER 70 SYSTEM DESIGNS COMPLETED (PASSIVE AND ACTIVE)
- APPX. 60 SYSTEMS HAVE BEEN INSTALLED (PASSIVE AND ACTIVE)
- OPERATE & MAINTAIN NUMEROUS PASSIVE SYSTEMS FOR INDUSTRY
-TECHNICAL/OPERATIONAL ASSISTANCETO WATERSHED GROUPS
(TAG GRANT)
- DESIGN , CONSTRUCTION AND O&M SERVICES
PADCNR
Jennings System
(2002)

WHY PASSIVE TREATMENT?
- GENERALLY SPEAKING, PASSIVE IS CHEAPER
- MININGCOMPANIES DON’T MAKE MONEYTREATINGWATER
- REDUCES OVERALL BOND/TRUST LIABILITY
- CONSISTENTTREATMENT
- NOTALWAYS CORRECTCHOICE (DIFFICULTTO “TURN UP” )
AMERIKOHL MINING
Ernest System (2002)
5,000T ALD

PATRIOT MINING – MT. MORRIS
- PASSIVE SYSTEM PRIMARILY FOR MANGANESE REMOVAL
-TMDL STREAM – MORE STRINGENT EFFLUENT LIMITS

PATRIOT MINING – KEENER
- ACTIVE SYSTEM (AQUAFIXWITH MIXWELL AND PUMPING)
- DYNAMICWATER QUALITY
- UTILIZE EXISTING FACILITIESTO REDUCE CAPITAL COSTS

ACTIVE CHALLENGES
- LABOR COST FOR ACTIVETYPICALLYVERY HIGH (2-3 VISITS/WK )
- CHEMICAL COSTSVARYAND CAN BE SIGNIFICANT
- PUMPINGAND ELECTRICALCOSTS
- SLUDGE HANDLING
- ROAD MAINTENANCE (SNOW PLOWING )
- SYSTEM BREAKDOWNS
HARBISON-WALKER
Sanborn Active (2005)

PASSIVE ADVANTAGES
- MONTHLY INSPECTIONS USUALLY SUFFICIENT
-TYPICALLYVERY LOW MAINTEANCE
- MUCH DENSER SLUDGE (VERY LOW COMPARITIVEVOLUME)
- NOT DEPENDENTON ELECTRIC OR MOVING PARTS
- CONSISTENTTREATMENT
HARBISON-WALKER
Sanborn Passive (2005)

PASSIVE PERFORMANCE
- 10-15 MANGANESETO ~DETECTION LIMIT 11YEARS!
SHENANGO INC.
Boartz (2003 - 2014)

PASSIVE OPERATION?
- HOWTO “OPERATE” SOMETHINGWITH NO MOVING PARTS?
- INSPECTIONS, MONITORING & SAMPLING
-TYPICALLY FLUSHING IF NEEDED (SOME AUTOMATED)
- ADJUSTTOVARIABLE FLOW/CHEMISTRY (IF FLEXIBLE SYSTEM)
SHENANGO INC.
East Riverside (2008)

MAINTENANCE
- CLEANING DITCHES & CHANNELS
HARBISON-WALKER
Sanborn (2014)

MAINTENANCE
- PUMPING SLUDGE (VEGETATION MAY REQUIRE SPECIAL PUMP)
SHENANGO INC.
Curley (2013)

MAINTENANCE
- STIRRINGTREATMENT MEDIA
- CONCURRENTWASHING (IF AGGREGATE ONLY MEDIUM)
SHENANGO INC.
East Riverside (2011)

MAINTENANCE
- CLEANINGTREATMENT MEDIA
- WATCHTHOSE PIPES!
SHENANGO INC.
“Aluminator “ (2012)

IMPROVEMENTS
- REPLACED PVC UNDERDRAINWITH DR17 HDPE PIPE
- (USE GAS DRILLTO PERFORATE PIPES)
- CONNECT USING FERNCOS (REGULAR OR SHIELDED)
- MARK PIPE LOCATIONS
AL HAMILTON
Bear Hill (2013)

TEMPORARY SUPPLEMENTAL
- DEPLOY INTERIMCHEMICALTREATMENTWHEN NEEDED
- LABOR COSTS ARE SIGNIFICANTLY HIGHER
- ONLYAS NEEDED IF POSSIBLE
- SODA ASH BRIQUETTES (OR LIQUID CAUSTIC)
SHENANGO INC.
East Riverside System
(2012)

REPLACEMENT
- SYSTEMSWILL NEEDTO BE RECONSTRUCTED
- OPPORTUNITY FOR IMPROVEMENT !
- DESIGN LIFE 15 – 25YEARSTYP.
- BETTERTECHNOLOGYAVAILABLE
SHENANGO INC.
East Riverside System
(2012)

CONTINGENCY
- BULLET HOLESAND SCRAP METAL

CONTINGENCY
- BULLET HOLESAND MUSKRAT HABITAT

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