TY  - Data
T1  - Tianjin Jinhai Lake Water Desalination System Concentrated Brine Treatment Dataset (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 concentrated brine after hardness removal is pumped into the bipolar membrane electrodialysis assembled with cation-exchange membrane (CMB), anion-exchange membrane (ACM), and bipolar membrane (BP-1E) from Astom in Japan through the circulating pump (MP-70RZ, New Xishan) with the volume of 4L for each chamber. The volume of each chamber tank was 4 L. A stable cycle was performed for half an hour before starting the power supply to remove air bubbles from the membrane stack. Then the power supply (ZJ-2100-70, Zhengjie) was started and the current was adjusted to be constant, and the data on the conductivity of the salt chamber, the concentration of the product acid solution, the concentration of the alkaline solution with the batch processing time, as well as the data on the energy consumption and the efficiency of the current of the different batch processing were recorded. The inlet concentrated brine TDS was 20 g/L, the membrane area was 510 cm2, the brine flow rate was 130 L/h, the water temperature was 30 ℃, and the membrane stack structure was BM-AEM-CEM-BM. The concentrated brine in the salt chamber was replaced when the conductivity of the salt chamber was about 6 μS/cm, and the inlet was recycled for three times in total. The measurement accuracy was taken to two decimal places. When the concentrated brine was circulated three times in the bipolar membrane electrodialysis, the conductivity of the salt chamber was reduced from 20 g/L to 4 g/L; the alkali production concentration was 0.6 mol/L; and the acid production concentration was 0.7 mol/L. The energy consumption of the corresponding membrane stack was increased from 0.88 to 1.87 kWh/(kg NaOH); and the current efficiency was reduced from 72% to 65%. This dataset is mainly applied to the study of concentrated brine resource utilization in brackish water desalination system.
DB  - NCDC
UR  - http://www.ncdc.ac.cn/portal/metadata/c43a4e8b-7895-4027-9802-75e3bb369cac
ER  -