P8.2.4.1 Check water chemistry Manganese. Manganese Consider a before selecting the different treatment option to more than treatment determine the 50% of its process. resin concentrations of ions MAV. exhausted. that will be adsorbed by the resin (commonly iron, manganese, calcium and magnesium). This will allow an estimate of operational time before regeneration will be required, and how much the hardness of the water will interfere with the iron and manganese removal. Monitor changes in treated chemistry (eg, calcium, manganese) to determine when the resin is exhausted and regeneration is required. P8.2.4.2 Check water chemistry Manganese. Manganese Pretreat the before selecting the water to Turbidity. treatment option to more than remove determine whether the 50% of its organic resin is water contains organic MAV. matter. fouled. material which will foul Turbid water Consider a the resin, or whether the entering the different water contains insoluble treatment iron or manganese which process. foul the resin. unit. Locate and Ensure that air cannot Exchange seal paths by come into contact with unit rapidly which air may the water before it enters fouled. enter the the ion-exchange unit to system before avoid oxidation of iron the and manganese. unit. Provide pre-treatment Install (eg, filters) to remove appropriate particulate matter from pre-treatment, the water. or improve the performance of the treatment already in use. P8.2.4.3 Check when the Manganese. Manganese Repack the exchanger is first exchanger or Channels in installed that it has been more than return to the the properly packed. 50% of its manufacturer. MAV. resin bed. Event: BUILD-UP OF GERMS IN THE RESIN BED Possible hazards: Germs. Level of risk: Low1
P8.2.4.1 resin exhausted. Check water chemistry before selecting the treatment option to determine the concentrations of ions that will be adsorbed by the resin (commonly iron, manganese, calcium and magnesium). This will allow an estimate of operational time before regeneration will be required, and how much the hardness of the water will interfere with the iron and manganese removal. Monitor changes in treated chemistry (eg, calcium, manganese) to determine when the resin is exhausted and regeneration is required. Manganese. Manganese more than 50% of its MAV. Consider a different treatment process. P8.2.4.2 resin is fouled. Check water chemistry before selecting the treatment option to determine whether the water contains organic material which will foul the resin, or whether the water contains insoluble iron or manganese which foul the resin. Ensure that air cannot come into contact with the water before it enters the ion-exchange unit to avoid oxidation of iron and manganese. Provide pre-treatment (eg, filters) to remove particulate matter from the water. Manganese. Turbidity. Manganese more than 50% of its MAV. Turbid water entering the unit. Exchange unit rapidly fouled. Pretreat the water to remove organic matter. Consider a different treatment process. Locate and seal paths by which air may enter the system before the unit. Install appropriate pre-treatment, or improve the performance of the treatment already in use. P8.2.4.3 Channels in the resin bed. Check when the exchanger is first installed that it has been properly packed. Manganese. Manganese more than 50% of its MAV. Repack the exchanger or return to the manufacturer. Event: BUILD-UP OF GERMS IN THE RESIN BED Possible hazards: Germs. Level of risk: Low1