Cleaning our plastic
We really need to put down some sort of standards or processes for cleaning our plastic for re-use.
We shredded our first batch Thursday of HDPE and PET in a semi commercial shredder.
I can tell you one thing the scrap plastic STINKS! I mean it smells extremely bad and many containers were used for household cleaning products, so there was a bit of a toxic brew in there.
I have seen some conveyors running plastic thru a tank of water with some lye that cleans the plastic and rids the paper labels.
Then it is rinsed.
It looks like there is a bit of work to be done to improve our capabilities to really recycle and process large amounts of plastic, as running 50 kilos a day just will not cut it, if we are to make a impact.
no you can not mix the two. Water contamination makes the plastic foam up. that is how EPS is made.
I got 17 kilos of HDPE yesterday. It is contaminated with dirt. I have soaked the red pieces (coke bottle caps) in water and a local bleach that has a soap in it. It is kinda clean but something better needs to be done.
I need to process roughly 30 kilos of plastic daily into usable products to earn a living.
At this point I am thinking it will be better to purchase from a processor.Toggle replies
I was thinking ocean salt water (to clean & get labels off) & then a one rinse of some kind, before the chop. Since most the bottles are collecting along shorelines & fresh water is limited world wide. But still there will need to be a sludge pond for all this washing residue.Toggle replies
has anyone tried shredding the plastic before cleaning it? i haven’t tried it, but i would like to try shredding it and then putting it in an agitation tank with water and cleaning solution, something adapted from a washing machine… i have seen people build machines like this for other purposesToggle replies
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