Concerns grow over tainted sewage sludge spread on croplands

For more than 20 years, the eastern Michigan town of Lapeer sent leftover sludge from its sewage treatment plant to area farms, supplying them with high-quality, free fertilizer while avoiding the expense of disposal elsewhere.

Can we turn sewage 'sludge' into something valuable?

Over the past few years I have become an academic expert in "sewage sludge" – the residual, semi-solid mix of excrement packed with microorganisms that is left behind within wastewater treatment plants. Every year the UK ...

Sewers could help clean the atmosphere

Sewage treatment—an unglamorous backbone of urban living—could offer a cost-effective way to combat climate change by flushing greenhouse gases from the atmosphere.

What causes algal blooms, and how we can stop them?

Outbreaks of algae have killed up to a million fish in the Murray Darling Basin over the last two weeks. The phenomena of "algae blooms", when the population of algae in a river rapidly grows and dies, can be devastating ...

Removing multi-resistant bacteria from sewage

Multi-resistant bacteria have learned to survive treatments with antibiotics by developing defense mechanisms. Not all of them are dangerous for human beings. Still, these bacteria are able to transmit their resistance genes ...

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