disposing of Waste Oil

Does anyone know how to properly dispose of oil waste in a Permaculture system for the common man. Not having a homestead, but instead in a urban location. Say for example you were theoretically frying things (fish because this is towards the end of the usefulness of cooking oil) and then needed to dispose of the oil. In Paul's Podcast, he talks about how pouring oil down into your septic tank or into the city sewage system halts healthy bacteria growth.

Can you clean the oil? Removing flavours, etc. from it?
Where does it go if you had a lot of it?
What about spoiled oil?

Do you know anyone who makes there own biofuels? I bet they would take it.

Make soap!

Hello Lee

First of al when your pans are stil warm let it drip in to a old pan for storidge or bucket then clean your pan or what ever with paper instead of down the kitchen sink believe me even oil wil screw up your pipes over time then the paper is perfict for starting fire's or just the compost heap
I usualy use the oil again for cooking for my 4 basterd german schepards just a little with lots of old bread and other scraps
If you don't mind the smel you can use it in old oil lamps or those beach torches
I love the permaculture way of thinking nothing is a wasteproduct !
Or i even use it on my gates and stuf its organic and becouse it rains you need to lubricate these things more than hinges inside
My sister likes throwing everything down the sink but after fixing it a few times now sche can pay some one to go fix it

HAHA

Daniel, you would make soap with waste oil from a frying pan that may smell like fish?