TY  - Data
T1  - Concentrated brine treatment data set of Tianjin Jinhai Lake desalination system (July 20, 2019 - October 30, 2020)
A1  - Du runhong
DO  - 10.12072/ncdc.MDBW.db0013.2021
PY  - 2021
DA  - 2021-10-22
PB  - National Cryosphere Desert Data Center
AB  - The hardened concentrated brine is pumped into bipolar membrane electrodialysis assembled from cation exchange membrane (CMB), anion exchange membrane (ACM) and bipolar membrane (bp-1e) produced by astom company of Japan through circulating pump (mp-70rz, xinxishan). The volume of storage tanks in each chamber is 4L. Steady cycle for half an hour before starting the power supply to eliminate bubbles in the membrane stack. Then start the power supply (zj-2100-70, Zhengjie) and adjust the current to be constant. Record the changes of salt chamber conductivity, product acid concentration and alkali concentration with batch processing time, as well as the data of energy consumption and current efficiency in different batch processing processes. The TDS of influent concentrated brine is 20g / L, the membrane area is 510cm2, the brine flow rate is 130L / h, the water temperature is 30 ℃, and the membrane stack structure is bm-aem-cem-bm. When the conductance of salt chamber is about 6 μ When s / cm, replace the concentrated brine in the salt chamber and circulate the water for three times. The measurement accuracy is taken to two decimal places. After three cycles of concentrated brine in bipolar membrane electrodialysis, the conductivity of salt chamber decreased from 20g / L to 4G / L; Alkali production concentration is 0.6mol/l; The concentration of acid production is 0.7mol/l. The energy consumption of the corresponding membrane stack increased from 0.88 to 1.87kwh / (kg NaOH); The current efficiency is reduced from 72% to 65%. This data set is mainly applied to the study on the resource utilization of concentrated brine in brackish water desalination system.
DB  - NCDC
UR  - http://www.ncdc.ac.cn/portal/metadata/c43a4e8b-7895-4027-9802-75e3bb369cac
ER  -