I'm a higher secondary school studet. See this following image, I can't understand how water can rises through the bed of permutit, my textbook says - Hard water introduced from the top of tank and then reaches at the bottom and then rises through the bed of permutit.!!, please tell me how it is possible.
Hard water has minerals (mostly calcium and magnesium salts). The hard water is pumped into the coarse sand layer at the bottom. As the coarse sand settles, the water comes into contact with the Permutit zeolite. As the water rises through zeolite, it binds the calcium and magnesium and replaces them with sodium.