I've used a similar set up in my darkroom to pump six feet up to my main sewer line for the last 19 years.

The only problem which forced me to replace the original unit was due to the tank developing a crack. I do not find this system to be noisy and as I work exclusively with fiber base paper I put a good volume through it.

I used PVC pipe exclusively in all of the plumbing to eliminate any corrosion issues. One important thing to keep in mind if you go this route is to place a check valve on the line from the pump to a point just before the connection to the sewer line. This will prevent back flow back into the tank after the pump shuts off and will prevent any overflow if for some reason you experience a sewer back up.