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Investigation on two integrated membrane systems for the reuse of electroplating wastewater
Author(s) -
Zhu Jianyang,
Jin Qiang,
Dongming Liu
Publication year - 2018
Publication title -
water and environment journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 37
eISSN - 1747-6593
pISSN - 1747-6585
DOI - 10.1111/wej.12324
Subject(s) - nanofiltration , reverse osmosis , wastewater , membrane technology , chemistry , reuse , waste management , environmental science , pulp and paper industry , membrane , environmental engineering , engineering , biochemistry
A pilot study was done on a nanofiltration (NF)‐reverse osmosis (RO) and RO‐NF integrated membrane system about the feasibility of membrane for electroplating rinse wastewater treatment in concentrate stage configuration. Nickel sulphate solution was used as a synthetic wastewater. Water recovery, metal rejection and specific entropy production (SEP) were investigated under different operation pressure, feed temperature and feed concentration. The results showed water recovery of RO‐NF system was more than 10% higher than NF‐RO system but the SEP was 14.47% lower than NF‐RO system. The detailed analysis on economic cost and environmental impact of two systems was conducted based on a certain operation condition. Results indicated that the cost of RO‐NF system was 0.46 $/m 3 , which was lower than NF‐RO system, and the prevention cost of RO‐NF system was 11.46% lower than NF‐RO system. Generally, RO‐NF system was better than NF‐RO system.