peñoles was founded in 1887
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“EXPERIENCES OF WASTEWATER AND WATER REUSE AT PEÑOLES INDUSTRIES: THE CASES OF MET – MEX AND FRANCISCO I. MADERO”. What is Peñoles?. Peñoles was founded in 1887. - PowerPoint PPT PresentationTRANSCRIPT
“EXPERIENCES OF WASTEWATER AND WATER REUSE AT PEÑOLES INDUSTRIES: THE CASES OF MET – MEX AND
FRANCISCO I. MADERO”
• Peñoles was founded in 1887.
• Peñoles is a mining group with integrated operations in smelting and refining of non-ferrous metals, and producing inorganic chemicals.
• Peñoles is the world largest producer of refined silver, metallic bismuth and sodium sulfate, the leading Latin American producer of refined lead and zinc, and Mexico’s largest refined gold producer.
What is Peñoles?
MISSION
Shareholders
Cu
sto
mer
sP
erson
nel
Suppliers Community
Adding value in a sustainable
manner
To add value to non-renewable natural resources in a sustainable manner.
FCO. I. MADERO
MET - MEX
Met – Mex is a metallurgical complex located in Torreón, Coahuila and Francisco I. Madero Mining Unit is a Zinc
Concentrating Plant, near Zacatecas, City.
Reducing water extractions through an
efficient usage
Increasing water availability through
environmental infrastructure for
reuse and distribution
EXTRACTIONS NATURAL AVAILABILITY
PROPOSED HYDROLOGICAL BALANCE
• Customs, values, attitudes and habits a person or a
society has regarding water importance.
• Availability of water resources in the environment
and the required actions to get, distribute, clean and
reuse it.
• This culture implies compromise to appraise and
preserve it, using it with social and environmental
responsibility.
WHAT DOES WATER CULTURE MEAN?
WHY SHOULD WE TREAT RESIDUAL WATER?
• To help the balance between the Earth and the Hydrosphere. There is only a certain capacity to receive, absorb and transform different kinds of wastes into nutrients.
• If we exceed this carrying capacity, wastes will accumulate given origin to water contamination.
• When the extraction is greater than recharge, water will become scarce.
Availability zone pesos/ m3
Prices per cubic meter according to Availability Zones established on the Mexican Federal Law on Water Rights
(Article 223)
I 14.3343
IIII 14.63014.630
III 9.5557
IV 7.8837
V 6.2111
VI 5.6135
VII 4.2252
VIII 1.5012
IX 1.1250
• In Met-Mex Peñoles, Gold, Silver, Lead, Zinc and
Bismuth, are refined from ores and concentrates
and these processes consume water.
• The City of Torreon, Coahuila, belongs to
Availability Zone II, whose right to make use of
water is 14.63 Pesos / cubic meter.
• Water consumption at our facilities is:
12,000 m3 /day (139 LPS)
Well water
Raw Sewage from the city
Evaporation
Water in productsPROCESSES
GENERAL SCHEME FOR WATER MANAGEMENT AT MET - MEX
Residual Water
GENERALSERVICES
GREEN AREAS
TREATMENT PLANT
TREATMENTBattery Limit
EVAPORATION
REPLACING WATER
GREEN AREAS
WASTEWATER GENERATION, TREATMENT AND REUSE
PLANT AND OFFICE INTERNAL DRAINAGE
WASTE WATER TREATMENT
PLANTS
REVERSE OSMOSIS ZINC PLANT
BOILER FEED WATER PRODUCTION
NANO-FILTRATION
NEUTRALIZATION
PURGE
SEWAGE CITY WATER
COOLING TOWERS
SLAG GRANULATION
LEAD SMELTER AND REFINERY
LEAD ACID PLANT
ZINC ACID PLANT
EXTENDED AERATION REACTOR
AC
TIV
AT
OR
SL
UD
GE
DIG
ES
TE
R
RAW SEWAGEGARBAGE SCREEN SETTLING
TANK
ROTATING DRUM FILTER
SEDIMENTATION
TANK
ANTHRACITE AND CARBON FILTERS
UV DESINFECTION
WASTE WATER TREATMENT PROCESS
DIGESTED SLUDGE TO COMPOSTE
WATER TO PROCESSES AND
REVERSE OSMOSIS
PRESS FILTER
AIR
MULTISTAGE WASTEWATER TREATMENT PROCESS
AT MET - MEX
BOD 330 <5 0 0
TSS 40 15 0.5 0.3
TDS 1,300 1,300 80 5
pH 7.0 7.0 6.0 9.0
HARDNESS 400 400 10 <1.0
Ca +2 120 120 3 <1.0
PO4 20 15 2 0
Cl 120 110 15 <1.0
Mg 30 30 <1.0 <0.02
SiO2 30 30 5 <1.0
Conductivity 1,600 1,450 60 <0.25
μ mohos
WASTE WATER
TREATED WATER
AFTER REVERSE OSMOSIS
AFTER IONIC EXCHANGE
SUMMARY OF WATER CONSUMPTION AND SAVINGS AT MET-MEX PEÑOLES
TOTAL DAILY CONSUMPTION 12,000 m3
WATER RIGHTS 13,500 USD / day
COST OF TREATMENT 0.20 USD / m3
NOT USED WELL WATER 11,300 m3 /day
INVESTMENT FOR A 130 LPS PLANT = 4 MILLION USD
APPROXIMATE SAVINGS = 3.8 MILLION DOLLARS / YEAR
FRANCISCO I. MADERO MINEWASTE WATER TREATMENT FACILITIES
8 8
Digested Sludge to promote revegetation on tailings dam
Raw sewage from
Zacatecas City
Q = 60 L / s
Piping length = 17.4 km
Automated Screen
Sand Trap
Aeration Tank
Sedimentation Tank
Flocculation & Quick Mix
Sand Filter
Chlorine Disinfection
To Industrial Processes
MULTISTAGE WASTEWATER BIOLOGICAL TREATMENT PROCESS
BIOLAK WOX SYSTEM
MEAN CONCENTRATIONS OF WATER QUALITY PARAMETERS AT FRANCISCO I. MADERO MINING UNIT
PARAMETERS WASTE WATER TREATED WATER
BOD
TSS
TDS
pH
100 mg / l
42 mg / l
1,100 mg / l
6.8
15 mg / l
4 mg / l
1,100 mg / l
7
VIEWS OF THE WASTEWATER FACILITY AT MET-MEX PEÑOLES AND FRANCISCO I. MADERO
FRANCISCO I. MADERO AERATION AND
SEDIMENTATION TANK
MET-MEX PEÑOLES AERATION REACTORS
CONCLUSIONS
Treating and reusing water gives benefits such as:
• Less contamination of rivers, lakes, lagoons and consequently, ground water.
• Reduces costs for production facilities.
Treating and reusing water, changes customs, behaviors, values and habits of people towards water.
Education is vital to create water awareness among the population helping preserve rivers, lakes, wetlands and ground water.
Treating and reusing water add value to non renovable resources and lead us to towards a sustainable development.