Soda blasters and pressure washers are the most eco friendly options.
Remove paint from concrete floor.
Use a paint scraper to scrape up any thick globs of paint that are sticking up off of the concrete.
Paint stains on concrete completely disappear using this method leaving you with a clean surface for repainting if necessary soda blasting is also an environmentally friendly way to remove paint from concrete and causes no damage to the underlying concrete.
For this stage of the job so long as you re working on a compact concrete patch you can probably get by with a wire scrub brush or a paint scraper.
Method 2 to remove paint from concrete with soda blasting.
Then put on a dust mask gloves and protective eyewear.
To remove paint from concrete first sweep the concrete to clean the area you ll be working on.
Remove paint stripper residue.
You could use this however it is better used on a larger surface since the application has a few steps.
Soda blasting is a great way to remove paint from large areas of concrete.