This is brilliant filtering system.

Constructing a miniature working dam for education

The best filtering system would had been preventing disposal of waste in the river in the first place

Aren't you going to pay for that?

8 million kg of waste removed from rivers and oceans by ocean cleanup ⭐️

A multifunctional Dublin arm was invented in 1921

Love is a beautiful thing 🥰💖

Chinese Dam

Best way to clean water

Great idea. People should stop throwing trashes in the water.