Apparently 95% of the test sample can be recovered. If its dirty and mixed, how much can TPA can be recovered and is the sludge chemically inert and landfillable?
Results will vary a lot with all the parameters (of which there are many). They don’t disclose all the detail but I know they have done thousands of tests across the parameters space. I know they believe they can process sludge produced from other processes.. The industry generally is very opaque, I think for competitive reasons and also because it’s so complex/nuanced.