PHOSPHATE ION SOLIDIFICATION AGENT, PHOSPHATE ION SOLIDIFICATION APPARATUS, AND SEPTIC TANK EQUIPPED WITH IT

摘要

PROBLEM TO BE SOLVED: To provide a phosphate ion solidification agent, a phosphate ion solidification apparatus which can be maintained and controlled with a low load and is installable easily in a small scale septic tank for treating a phosphate ion-containing wastewater, and a septic tank provided with the apparatus. SOLUTION: The phosphate ion solidification agent contains a multi-valent metal ion enclosed and fixed in hydrophilic gel. The phosphate ion solidification apparatus contains the phosphate ion solidification agent and is useful if it is used for a septic tank. The phosphate ion solidification apparatus may have a structure in which a column filled with the phosphate ion solidification agent is installed and target water containing phosphate ion to be treated is passed through the column, or in which a water-permeable container containing the phosphate ion solidification agent is immersed in an immersion tank and object water containing phosphate ion to be treated is passed through the immersion tank. COPYRIGHT: (C)2006,JPO&NCIPI