The sewage plant is recovering 4.2 lbs. of gold (worth about $62,000) from each ton of fly ash they create when incinerating sludge. Being located in an area with lots of metal plating shops helps.
Topple Trump, politics, renewable energy, water
The sewage plant is recovering 4.2 lbs. of gold (worth about $62,000) from each ton of fly ash they create when incinerating sludge. Being located in an area with lots of metal plating shops helps.