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Section 7: Monitoring

Section 7: Monitoring. ISCO Process Optimization Monitoring ISCO Performance (Closure) Monitoring. Process Monitoring. Oxidant-specific monitoring parameters Injection concentrations Volumes Flow rates Return on investment Injection well Temperature Pressure

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Section 7: Monitoring

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  1. Section 7: Monitoring • ISCO Process Optimization Monitoring • ISCO Performance (Closure) Monitoring

  2. Process Monitoring • Oxidant-specific monitoring parameters • Injection concentrations • Volumes • Flow rates • Return on investment • Injection well • Temperature • Pressure • Important component of the health and safety program

  3. Oxidant Specific Monitoring Parameters • Permanganate • Monitor well - color, oxidation / reduction potential (ORP), conductivity, chloride, manganese dioxide • Persulfate • pH, dissolved oxygen (DO), ORP, conductivity, and/or persulfate in monitor wells • Ozone • Continuous monitoring of ozone gas, carbon dioxide (CO2), volatile organic compounds (VOCs), and oxygen (O2) • Peroxide (Fenton’s) • Injection well - pH, temperature, pressure • Monitor well - pH, temperature, color, ORP, DO, conductivity, and VOCs

  4. Monitoring Locations Removed leaking tank Stainless steel application well Offset (PVC) wells Pressure and Temp monitors Inject oxidant into contaminant plume Unsaturated zone Water supply well Saturated zone Groundwater flow Plume of dissolved contaminants

  5. ISCO Optimization • Goals • - Maximize hydroxyl radical, persulfate radical and • superoxide generation • - Minimize migration of contaminants and vapors • - Optimize desorption/dissolution and subsequent • oxidation of organics • Methods • Temp >30oC < 60°C • Real-time monitoring and reaction management • Pressure < 10 psig • Manage reaction by controlled submerged application of reagents

  6. Pressure and Flow Monitoring Temperature and Pressure Gauges Flow Metering

  7. MECX Reagent Distribution Manifold MECX ISCO Wellhead ISCO Reagent Delivery

  8. ISCO ProcessTemperatureMonitoring

  9. Daily Temperature Trend

  10. Application CycleTemperature

  11. ISCO ProcessTemperature and pH Monitoring

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