Bevel-helical gear reducers B4 pace in mm Size heating element heating element B4FH-14-C

Flender/Flender Gear Units/Bevel-helical gear reducers B4

which would pose treatment challenge since the pant ha only one lane. Thus it is more practically fe asible to replace the surface aerators with either hybrid aerator/mixers or dual impeller aerators. (iv) High Capital Investment by Installing an Efficient Balancing Tank: Installing balancing tank is proven wa of reducing peak energy demand with additional benefits of improving process and aeration control (which reduces energy consumption) as well as process performance and hence final effluent quality. balancing tank combined with an efficient aeration system similar to Zeekoegat WWTP will yield maximum energy savings. Pr eliminary estimates in this study show that saving greater than 4% can be achieved with FDBA and advanced process control. detailed engineering design to pr operly size the balancing tank and further evaluation of aeration ECMs is required if this option is considered. 2. Modelling results show that implementing the identified aeration ECMs improves process performance resulting in final effluent nitrate/ nitrite and Ortho concentrates that are much lower than the current performance of the plant as well as the final effluent discharge permit limits. 3. It should be noted that the model predicted savings for medium and high capital investment measures might not be realised in practice due to the challenges of implementing control systems in wastewater treatment. If the measures are to be implemented in practice the following is recommended: more detailed investigation of market avai lable options for aeration technology as well as process and aeration control technologies that can replace the existing surface aerators and the feasibility of incorporating th em into the existing plant. The quality and costs including maintenance requirements are of critical importance to the success of the aeration ECMs. Application of superior economic evaluation technique such as life cycle cost analysis, which takes in