installation and operation of an on site sodium hypochlorite on
TRANSCRIPT
Installation and Operation of an On Site Sodium HypochloriteOn Site Sodium Hypochlorite
Generation SystemCity of Mason
On Site Generation (OSG)O liOutline
• Why the City chose such a systemWhy the City chose such a system• Unit Components
O ti d R ti M i t• Operation and Routine Maintenance• Cost Benefits• Safety Benefits
Why OSG and the City of Mason?Why OSG and the City of Mason?
• Mason needed to address removal of radium in their drinking water
• New plant offered new opportunities
• Initial Cost Benefit• Initial Cost-Benefit analysis showed OSG to be better than bulk purchasepurchase
• Safety and Environmental Concerns
Plant Layout and Equipment LocationBrine Tank,
Salt Storage & Dilution Pump
NaOCl Application Points
Electrolyzer, StorageElectrolyzer, Storage Tanks & Pumps
Unit ComponentsUnit Components
• Brine TankBrine Tank• Softener &
Dilution Pump• Rectifier• Electrolyzer• Storage Tank w/
Ventilation Kit • Hydrogen Gas• Hydrogen Gas
Detector
Unit ComponentsUnit Components• Brine Tank• Softener &
Dilution Pumpp• Rectifier• Electrolyzer• Storage Tank w/
Ventilation Kit • Hydrogen Gas• Hydrogen Gas
Detector
Unit ComponentsUnit Components• Brine Tank• Softener & Dilution
Pump• Rectifier• Electrolyzer
S /• Storage Tank w/ Ventilation Kit
• Hydrogen GasHydrogen Gas Detector
Unit ComponentsUnit Components• Brine Tank• Softener &
Dilution Pump• Rectifier• Electrolyzer
S /• Storage Tank w/ Ventilation Kit
• Hydrogen GasHydrogen Gas Detector
Unit ComponentsUnit Components• Brine Tank• Softener &
Dilution Pump• Rectifier• Electrolyzer
St T k /• Storage Tank w/ Ventilation Kit
• Hydrogen Gas• Hydrogen Gas Detector
Unit ComponentsUnit Components• Brine Tank• Softener &
Dilution Pump• Rectifier• Electrolyzer
Storage Tank w/• Storage Tank w/ Ventilation Kit
• Hydrogen GasHydrogen Gas Detector
Routine Operation ProtocolRoutine Operation Protocol
– Maintain Salt Level in the saturator
– Check for leaks in hoses or deterioration of seals
– Check for scaling or fouling of electrodes
M it lt h d d t t th d– Monitor salt usage, hardness, product strength, and run hours
System CapabilitiesSystem Capabilities
• Produces a 0 8% solution of NaOCl withProduces a 0.8% solution of NaOCl with Hydrogen as a by product
• OSEC BP-36 can produce up to 36 d f N OCl dpounds of NaOCl per day
• Mason uses approximately 14 pounds per day of NaOCl ~ 9 hours of daily operationy y p
Operational Cost ComparisonOperational Cost Comparison
14.3 poundsAmount of NaOCl Applied per day
Bulk Cost per dayCost of bulk NaOCl per pound
$27.17$1.90
14.3 poundsAmount of NaOCl Applied per day
Rectifier Electricity Consumption 43 6 kWh/day$0.10 kWhOSG Costs – Electricity
Bulk Cost per day $27.17
$4 93(B) D il S lt C t(A) Daily Electric Cost Rectifier Electricity Consumption
$4.3643.6 kWh/day
$OSG S$9.29OSG Cost per day (A+B)$4.93(B) Daily Salt Cost
$17.88OSG Savings per day
Mason Lessons LearnedMason Lessons Learned
• Use raw water only into softenerUse raw water only into softener• Maintain brine solution temperature of 65
to 80 degrees Fto 80 degrees F• Don’t make more than 2 day supply• Use commercially available “CLR” type
product to clean electrodes
Recommendations & ConclusionsRecommendations & Conclusions
• Product produced is safer to handle andProduct produced is safer to handle and store – it is only 13% of the strength of household bleach
• Higher quality than bulk NaOCl• Excellent choice for smaller systemsExcellent choice for smaller systems
where you are able to make and store what is needed.
• Less Waste!• Cost effective for a smaller systemCost effective for a smaller system
Sources of NaOCl Make Up SSystems
Siemens OSEC www water siemens comSiemens OSEC www.water.siemens.com
MIOX Corporation www miox comMIOX Corporation www.miox.com
Severn Trent Chlortec www severntrentservices comSevern Trent Chlortec www.severntrentservices.com
MicroClor www 4psi net/microclor features htmMicroClor www.4psi.net/microclor_features.htm
If you would like more information regarding the OSEC unit or would like toIf you would like more information regarding the OSEC unit or would like to tour the plant, please contact Ken Baker at 517-676-1319 or Don Heck at
517-676-9200