%0 Dataset
%T Data set of variation of water recovery rate of Tianjin Jinhai Lake desalination system with salt content of lake water (July November 2020)
%J National Cryosphere Desert Data Center
%I National Cryosphere Desert Data Center(www.ncdc.ac.cn)
%U http://www.ncdc.ac.cn/portal/metadata/8eacf0a1-e9b1-4d4e-b3a0-13e6541cb6c2
%W NCDC
%R 10.12072/ncdc.MDBW.db0005.2021
%A Du runhong
%K Nanofiltration;reverse osmosis;salt content;water recovery
%X The water of Jinhai lake is pretreated by precision filtration ultrafiltration and desalted by reverse osmosis / nanofiltration system. After the pressure and flow rate stabilize for half an hour, record the water recovery rate. The precision filtration system adopts filtration accuracy of 5 μ M bag filter element and melt blown filter element are connected in series, and the operating pressure of precision filtration is 0.3MPa. The ultrafiltration system adopts polyvinylidene fluoride tubular membrane (average pore diameter 0.1) μ m. The inner diameter of membrane tube is 8 mm, Tianjin haipur), the ultrafiltration operating pressure is 0.13 MPa, the circulating flow is 43 ~ 45 m3 / h, and the produced water flow is controlled at 2 m3 / h. The desalination system adopts commercial polyamide 4040 roll reverse osmosis and nanofiltration membrane modules (vnf2 and ulp100, Guiyang times Wharton Co., Ltd.). The salt content of lake water is 4.5 ~ 7.8 g / L, the inlet flow is 2 m3 / h, the desalination system is 4ro-4nf, the operating pressure is 1.3 ~ 1.8 MPa, and the water temperature is 30 ± 2 ℃. The measurement is accurate to two decimal places. When the salt content of lake water is extrapolated to 10 g / L and the operating pressure is 1.5 MPa, the recovery rate can reach more than 60%, reaching the assessment index of the project document.