All about Denitrator

Originally Posted by mudskippy

But this is quite easy to be fixed right? Just increase the dripping rate until the rotten egg smell (hydrogen sulfide) gone...

Technically speaking, yes but the denitrification is not instantaneous. It needs certain ....shall we say, retention time for the process to complete. If the flowrate is too quick for the size of denitrator, incomplete denitrification will take place. You might get nitrate at the output and worst case, nitrite n ammonia too!