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Purification of wastewater may lead to an imbalance between nitrogen and phosphorus

The amount of nitrogen and phosphorus in surface water has been reduced through purification of wastewater. Nonetheless, toxic algae blooms still flourish frequently. Because the purification plants are better at removing phosphorus than nitrogen, the balance between these two elements is shifting on a global scale. This results in a comparatively high level of nitrogen in the purified water, which causes abundant growth of of algae with a preference for nitrogen. Thus concludes an international team of researchers, which includes Wageningen University & Research, in a publication in PNAS. Like humans, nature needs a balanced diet: not too much, and the right balance in nutrients. While humans need a diet with sufficient fresh fruits and vegetables, and a moderate amount of fat, the balance between nitrogen and phosphorus is essential to nature.  Read more.....

 

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