The subsequent addition of ATP not simply acted to be a skeleton builder from the agglomerated sludge cakes to reinforce the permeability and filterability of sludge but in addition correctly chelate with the highly hydrophilic PN substances while in the EPS with the sludge through the steel ions on ATP, https://lorenzosojib.dgbloggers.com/29192311/an-unbiased-view-of-continuous-sand-filter