Resource Recovery from Soybean Soaking Water by Ultrafiltration and Reverse Osmosis
作者： Xiaofeng Hang , Weifeng Cao , Jianquan Luo , Xiangrong Chen , Junxiang Yin
DOI: 10.1007/S11947-015-1531-Y
关键词: Permeation 、 Wastewater 、 Tap water 、 Resource recovery 、 Pulp and paper industry 、 Ultrafiltration 、 Reverse osmosis 、 Chemical oxygen demand 、 Raw material 、 Chemistry 、 Chromatography
摘要: Recovery of water and soluble substances from soybean soaking (SSW) was carried out using an integrated membrane system consisting ultrafiltration (UF) reverse osmosis (RO). It found that even the four-stage UF-UF-RO-RO process with pH adjustment, quality RO permeate did not satisfy emission standard, while two-stage UF-RO treatment could be reused for soaking. The chemical oxygen demand (COD) this 1700–2800 mg/L including acetic acid, γ-aminobutyric lactic alcohol, other unidentified extract –C═O or –N–H groups, which had negligible effect on subsequent five cycles addition tap (RO permeate/tap = 1:1.5), soaked soybeans were used Koji making, showed similar properties made by water. Furthermore, concentrates in provided a raw material culturing algae preparing animal feed. This work demonstrated through treatment, wastewater pollution food industry eliminated resource recovery utilization.
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