CHUNG, YUN CHUL 2024-01-12T10:07:48Z 2024-01-12T10:07:48Z 2022-01-14 2001-01-01 https://pubs.kist.re.kr/handle/201004/84203 Biological Ion Exchange Process for Ammonium Ion Removal from Piggery Wastewater Conference 1 Japan Japan Proc. Asian Waterqual 2001, Fukuoka