First and foremost is to make this out of readily available stuff , so we will use two 55 gallon drums , floating on the water , rotating towards each other at the top.
Each one will have a rod installed through the center lengthwise. and be connected together with two 4 by 4s by 8 or 10 feet long. and shall pivot up for transport by boat , to the site of use.
Each barrel shall have an absorbent material attached and i was thinking it should be about 2" thick , to allow for the ridges in the barrels , and if you offset them so the ridges don't line up that would be better.
The idea is to have the two 55 gal. drums rotating against each other at the top , and collect the sludge as it oozes off either end.
The 4 by 4s shall have a slot at the connection to the front barrel of sufficient length as to allow the two barrels to be pulled together by two springs of unknown origin. Need some spring ideas..
The barrel closest to the boat shall have a motor attached by a automotive timing belt to spin the barrels to collect the sludge.
The motor ... Hmm need some ideas for the motor.. because it has to have the same teeth as the belt.. unless we could pull the pulley off the crankshaft of an old engine ,and also use the cam shaft pulley.
The motor has to have sufficient torque at a low speed also.
any ideas ?
PS i forgot to mention that this is to be solar powered ... on the skimmer boat there is a couple of solar panels for shade and power for the batteries for the rotating drums.