A Use for Sludge?

October 22, 2015

A Use for Sludge?

Here’s an example of turning lemons into lemonade: scientists in Malaysia working on finding alternate disposal options for sludge (dried sewage), have discovered that it may be a viable alternative for cement in concrete production (Science Daily, Aug 28, 2015). The process first involves burning and drying ‘wet sludge cake’ to create a powder. This powder (domestic waste sludge powder or DWSP), is then used in varying proportions with traditional cement to produce concrete products in select grades. Initial findings were mixed: while compressive strength generally decreased as the proportion of dried sludge in the mix increased, the sludge mix concrete was much less permeable than regular concrete. Additional research is underway.

 

Environment, Miscellaneous
About Alana Graff

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