Method for treating waste water

摘要

A method for treating phosphate-containing waste water comprising treating phosphate-containing waste water with a metal hydroxide complex as a phosphate adsorbent represented by formula (1):M1-x2+Mx3+(OH-)2+x-y(An-)y/n(1)wherein M2+ represents at least one divalent metal ion selected from the group consisting of Mg2+, Ni2+, Zn2+, Fe2+, Ca2+ and Cu2+, M3+ represents at least one trivalent metal ion selected from the group consisting of Al3+ and Fe3+, An- represents n-valent anion, 0.1