did you try direct into the amp? or try the noise suppressor as your only pedal with a battery? as far as i understand it if the hum is coming from something other than the circuits in the pedals, like a bad ground or something, then your power supply is not going to have any effect. it can be a very tricky thing, you are not dealing with a hi fi electronics here, and if you aren't playing clean then there is always going to be some hum and hiss that's just the nature of the beast, if you are "boosting" in any way then you are going to boost whatever signal there is.
you probably want to take your gear to another building entirely.