Selangor, Malaysia: A study was recently published in the Pertanika Journal of Science and Technology on the potential for using sludge as an additive to cement! It may even lessen water permeability, thus increase durability, in certain grades of that most ubiquitous of building materials!
This came about due to stricter environmental regulations on the disposal of sludge, due to its high, heavy metal content.
What to do with this stuff? Get creative!! This might have world-wide implications for a lovely recyclement of tainted sludge!
You can access a news report on this here:
http://www.wateronline.com/doc/turning-sewage-sludge-into-concrete-0001?sectionCode=TOC&templateCode=Single&user=2124006&source=nl:43767&utm_source=et_10759433&utm_medium=email&utm_campaign=WOL_2015-09-03&utm_term=8B6151B5-326C-4D25-A47F-7FA24BE85D17&utm_content=Turning%2bSewage%2bSludge%2bInto%2bConcrete
Read even more here—and see some sludge photos too!
http://www.pertanika.upm.edu.my/Pertanika%20PAPERS/JST%20Vol.%2023%20(2)%20Jul.%202015/04%20JST-0464-2013%20Rev1.pdf
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