SOLID PHOSPHORUS REMOVING AGENT, METHOD FOR PRODUCING THE SAME, METHOD FOR DISSOLVING THE SAME IN WATER, APPARATUS FOR DISSOLVING THE SAME AND WASTE WATER CLEANING TANK EQUIPPED WITH THE APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide a solid phosphorus removing agent obtained by lumping iron salt or aluminum salt, each of which is reacted with a phosphate ion to solidify the phosphate ion (and has high solubility in water), and treating the lumped iron salt or aluminum salt so that the lumped iron salt or aluminum salt has a slow releasing property (slow solubility in water), and to provide a method for producing the solid phosphorus removing agent, a method for dissolving the solid phosphorus removing agent in water, an apparatus for dissolving the solid phosphorus removing agent and a waste water cleaning tank equipped with the apparatus for dissolving the solid phosphorus removing agent.;SOLUTION: The solid phosphorus removing agent contains iron salt or aluminum salt, a binder and a liquid hydrophobic substance.;COPYRIGHT: (C)2008,JPO&INPIT