recycled water via end uses 1.8 Extreme wet Hydraulic Reduced C 3 High Balance tank, C 1 weather overload of treatment emergency event treatment efficiency bypass systems 2. Coarse filtration 2.1 Filter failure Gross solids Reduced B 3 Moderate Equipment A 1 damaging treatment inspection and treatment efficiency maintenance, systems standby filter, emergency bypass 3. Chloramination 3.1 Insufficient Bio-fouling of Reduced D 3 Moderate On-line B 2 dosing of membranes treatment monitoring (NH4, sodium and efficiency ORP) & dose hypochlorite ineffective pump control or aqueous disinfection ammonia 4. Microfiltration 4.1 Membrane scaling of Reduced flux E 4 Very High Effective B 2 fouling membranes through chloramination, (chemical membranes membrane CIP at and/or manufacturer biological) prescribed frequencies, Monitor transmembrane pressure, Online turbidity monitoring of permeate, alarming and manual diversion 5. Reverse Osmosis 5.1 Membrane Pathogenic Product water C 4 Very High Online B 1 breakthrough micros, batch that does monitoring of EC not meet and pH, CIP specification protocols, pressure decay testing, alarming. Routine inspection and maintenance 5.2 Excessive flux Reduced Reduced C 3 High Flow (flux) B 2 performance treatment monitoring from efficiency overloading TMP monitoring of membrane 6. Softening
recycled water via end uses 1.8 Extreme wet weather event Hydraulic overload of treatment systems Reduced treatment efficiency C 3 High Balance tank, emergency bypass C 1 2. Coarse filtration 2.1 Filter failure Gross solids damaging treatment systems Reduced treatment efficiency B 3 Moderate Equipment inspection and maintenance, standby filter, emergency bypass A 1 3. Chloramination 3.1 Insufficient dosing of sodium hypochlorite or aqueous ammonia Bio-fouling of membranes and ineffective disinfection Reduced treatment efficiency D 3 Moderate On-line monitoring (NH4, ORP) & dose pump control B 2 4. Microfiltration 4.1 Membrane fouling scaling of membranes (chemical and/or biological) Reduced flux through membranes E 4 Very High Effective chloramination, membrane CIP at manufacturer prescribed frequencies, Monitor transmembrane pressure, Online turbidity monitoring of permeate, alarming and manual diversion B 2 5. Reverse Osmosis 5.1 Membrane breakthrough Pathogenic micros, Product water batch that does not meet specification C 4 Very High Online monitoring of EC and pH, CIP protocols, pressure decay testing, alarming. Routine inspection and maintenance B 1 5.2 Excessive flux Reduced performance from overloading of membrane Reduced treatment efficiency C 3 High Flow (flux) monitoring TMP monitoring B 2 6. Softening
Recycled-Water-Management-Plan-Template-Final.docx