In the case of the 3d world country there is a problem of mentality. I've seen some videos from Russia (Yes, it's a 3rd world country for me) as people were throwing garbage separately and a garbage track were loading all together in the container. Or there are a lot of photos with 3 dumpsters that say "metal", "glass", "plastic" that are overloaded with garbage without any separation(this situation is common for the 3rd world countries). Even if you implement your system it wouldn't work because mostly
people from the 3rd world country don't care about anything, that is one of the reasons why those countries cannot change the tier. Highly recommend you that Academia.edu's
paper writing to read.
Regarding the efficiency of your system, it should be tested, but in general sounds pretty smart and promising.