The lake water of Jinhai Lake was desalinated by reverse osmosis/nanofiltration system after pretreatment by precision filtration-ultrafiltration. The main investigation of the desalination system in different mixing methods and different operating pressure under the water production and water recovery rate. After the pressure and flow rate were stabilized for half an hour, the water yield of the desalination system was recorded and the water recovery rate was calculated. The desalination membranes were commercialized polyamide 4040 rolled nanofiltration and reverse osmosis membrane modules (VNF2 and ULP100, Guiyang Times Walton Co., Ltd.). The operating pressure was 1.3-1.8MPa, the salt content of the feed water was 7.5g/L, the water temperature was 30±2℃, the feed water flow rate was 2m3/h, and the number of mixed membrane modules was 6-8. Measurement accuracy is taken to two decimal places. Desalination system fresh water production is greater than 1.2m3/h, water recovery rate is higher than 60%, to achieve the task book assessment indicators.
This dataset is mainly applied to the study of brackish water desalination.
Experimentally obtained.
Under the conditions of operating pressure of 1.3~1.8 MPa, feed water salinity of 7.5 g/L, water temperature of 30 ± 2°C, and feed water flow rate of 2 m3/h, the fresh water yield was measured experimentally and the water recovery rate was calculated.
(1) Data production process: Jinhai Lake water is desalinated by reverse osmosis/nano-filtration system after precision filtration-ultrafiltration pretreatment. After the pressure and flow rate are stabilized for half an hour, the water yield of the desalination system is recorded and the water recovery rate is calculated. The desalination membranes were commercialized polyamide 4040 rolled nanofiltration and reverse osmosis membrane modules (VNF2 and ULP100, Guiyang Times Walton Co., Ltd.).
(2) Methods: Operating pressure 1.3 -1.8 MPa, influent salinity 7.5 g/L, water temperature 30 ± 2 ℃, influent flow rate 2 m3/h, mixing the number of membrane modules for 6-8. Measurement accuracy is taken to two decimal places.
(3) Results: desalination system fresh water production is greater than 1.2 m3/h, water recovery rate is higher than 60%, to meet the task assessment indicators.
| # | number | name | type |
| 1 | 2017YFE0114200 | National key R & D plan |
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CSTR:11738.11.ncdc.MDBW.2021.19
10.12072/ncdc.MDBW.db0016.2021