the development and deployment in developing countries of manifolded, three-stage water filtration...
TRANSCRIPT
The Development and Deployment in Developing Countries of Manifolded, Three-Stage Water Filtration Systems with
Heavy Metals Removal
Harry Knopke and Bob McDonald of Aqua Clara International
• ACI Focus: Generating Clean Water from Contaminated Sources
• Such Sources Presently Have an Impact on 2-3 Billion People
Stage One: Business Model
• Clients: the poor of developing countries
• Product: clean water generated
• Technology: consistent with good physics resulting in:– Clean water by UN standards– Tech transfer to local people– Cost effective: <$0.001 per liter
The first product was a re-designed biosand filter
• This kind of filter had been the technology of choice in developing countries
• Research conducted in the Zeeland Water Treatment facility
• Innovations included:
• Use of locally sourced plastic components
• “ACX” a brass-based biocide
• Using reactors as the basis for small businesses
• Now over 12,000 in use world-wide
Stage Two: development of water purifiers for families
• Bio-reactor + sand filtration
• Output water: meets UN standards
• Applications: early on, 1,000 first year, 2,000 second year
• Applications today: approaching 20,000– All made locally and functioning effectively as
predicted
Stage Three: development of water purifiers for groups of
people
• Manifolded three stage filtration
• Output water: meets US standards
• Applications: installed capacity > 2 million liters per day
Newest Products are based on hollow membrane technology
Units have been installed and are functioning in 11 countries
Arsenic/fluoride/heavy metals remediation is accomplished in tandem with bacterial removal—a unique approach
INFORME GENERAL DEL PROYECTO PRESENTADO POR:
Gema Daday Rivas ÁlvarezEddysson Jamir Flores PérezJavier Ramírez Meza
Managua-NicaraguaAbril, 2013
Tabla 9. Resultados promedios de los análisis a nivel básico para agua de pozo “La Corona”
tratada por el ST.Nivel de
vigilanciaParámetro Unidades
Magnitud promedio en
PRM-1
Magnitud promedio en
PRM-3
Eficiencia de remoción (%)
Nivel básico
Turbiedad NTU 0.91 0.45 51.10pH Unidades 7.59 8.11 -6.85
Coliformes totales (FME)
UFC/100 mL <1 <1 N/A
Coliformes termotolerantes (FME)
UFC/100 mL <1 < 1 N/A
Coliformes totales (PPEC)
UFC/100 mL <1 < 1 N/A
Coliformes termotolerantes
(PPEC)UFC/100 mL <1 < 1 N/A
Coliformes totales (FME+ PPEC)
UFC/100 mL <1 < 1 N/A
Coliformes termotolerantes (FME+
PPEC)UFC/100 mL <1 < 1 N/A
Temperatura (de cuarto)
ºC 22.22 28 N/A
Conductividad eléctrica
µS/cm 499 502 -0.60
Sólidos totales disueltos (ME)
mg/L STD 244.34 246 -0.68
Tabla 12. Resultados promedios de los análisis a nivel avanzado para agua de pozo “La Corona”
tratada por ST.Nivel de vigilancia
ParámetroUnidad
es
Magnitud promedio en
PRM-1
Magnitud promedio en
PRM-3
Eficiencia de remoción
(%)
Nivel avanzado
Arsénico (Wagtech Arsenator® Digital )
μg/L As44.34 0 99.90
Arsénico (Quick™ ARSENIC TEST)
40-60 0—5 87.50-99.90
• 5th Status Report of Global Grant Project , No 25607, dated 24th May , 2013• Rtn Rajkamal Bhuyan, contact person of the Global Grant no 25607 of R C Gauhati
South is pleased to inform you that the Report for Arsenic Testing has been received from PHE , Belsor Laboratory and it gives me tremendous satisfaction to inform the members of our club as well as Dr Arvind Phukan & Dr Harry Knopke that the Water Quality obtained after the filtration process and removal of arsenic contamination in the 3 ( three ) schools is devoid of arsenic contamination, as evident from the table enumerated below for ease of comparison.
• Parameters Before Fltr. After Fltr. Permissible Limit
• Kordoitola LP School• Arsenic (mg/l) 0.1318 0.0010 0.05
• Digheli L P School • Arsenic (mg/l) 0.1360 0.0035 0.05
• Barchenekuchi L P School• Arsenic (mg/l) 0.0931 0.0020 0.05