Development of phosphorus recovery system by using zeolite and hydrotalcite are used and conjugative regeneration of adsorbents

点击翻译按钮获取中文摘要

The purpose of this study is to develop HT/Ze phosphorus recovery system, which uses hydrotalcite and zeolite. Experimental examination of the system was conducted through adsorption test, desorption test of HT and Ze by single desorbing solution, phosphorus recovery test from desorbing solution and practical application to wastewater treatment plants.Characteristics of phosphate and ammonium adsorption by Nano-size Layered Double Hydroxide (NLDH) and Grass powder Zeolite (GZe) were revealed by adsorption test. It was also found that NLDH and GZe are desorbed at the same time by single desorbing solution. Moreover, 90% of adsorbed phosphorus by NLDH can be desorbed into desorbing solution, and totally 81% of phosphorus can be recovered as the crystallized phosphorus. From practical application test, HT/Ze is proved to recover phosphorus from actual wastewater.