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Manifold Force Mains with Many Pumps

I'm working in a coastal community where the terrain is very flat and therefore they don't have much gravity and they use a lot of pumping stations. They have 100's of duplex submersible pump stations and 1000's of individual grinder pumps that all pump in common force mains, some of which even reverse directions under various operating conditions. The system even has several in-line sewer booster pumping stations along the force mains. They have multiple treatment facilities and use the in-line booster PS to try and move flow to various treatment plants to optimize available capacity. The in-line boosters also serve to shift the 'natural' hydraulic breaks in the system to alleviate some areas where the head conditions get too high pushing the pumps back on their curves. 

I want to model this complex system but I'm researching the best solutions. Is this best handled in a water modeling software or wastewater? And what level of detail is necessary to really provide the most benefit for the model? We would like to use this for operational modeling to evaluate transfer flow in different directions and optimize the system, as well as evaluate the impacts from future connections. Do we need to model detailed pump curves for all the duplex PS, and wet wells with controls for a EPS model? How important are the air valves in the system? Or is it possible to simplify the system? And how do you account for the smaller individual grinders which are just small PD pumps that pump at relatively fixed flows under higher head conditions? They do have good SCADA data on many of the duplex PS and pressure points within the system to help validate a model.

Any users out there with experience in modeling a similar system? Or any thoughts on water vs. sewer software for this application and the level of detail needed to provide optimum benefit for operational modeling?

Thanks,

-Brian