Making household bricks out of the sludge formerly known as sewage...
As well as getting rid of the sludge, there are other benefits. The firing process locks away for good any toxic heavy metals in the sludge, and also destroys any hazardous microbes and organic material. And the bricks don't smell at all, says Weng.
But Weng admits that people might need a little convincing to live in such intimate contact with their own waste.
Indeed. At the very least the color should be tweaked.
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