TY  - Data
T1  - Experimental dataset of high salinity mine water pretreatment unit in Dahaize, Yulin City, Shaanxi Province (October November 2020)
A1  - ZHENG Xi
DO  - 10.12072/ncdc.UTCMW.db2123.2022
PY  - 2022
DA  - 2022-05-30
PB  - National Cryosphere Desert Data Center
AB  - For the deep desalination treatment of high salinity mine water, it is necessary to use reverse osmosis (RO) membrane method to remove hardness, salinity, and other low concentration pollutants from the mine water. Due to the high water quality requirements of the reverse osmosis system, the SDI value of the sedimentation density index of the inlet water of the device needs to be<3 and the turbidity<0.5. Using appropriate pretreatment techniques to reduce the SDI value and turbidity of the influent can prevent mechanical damage to the surface of the reverse osmosis membrane and reduce pollution, which is essential for the safe and stable operation of the subsequent RNRR multi-stage enhanced membrane concentration process. This article adopts ceramic sand filtration+high flux ultrafiltration pretreatment technology to remove suspended/particulate matter, colloids, and large molecular organic matter through physical interception, in order to meet the SDI and turbidity requirements of subsequent deep treatment of reverse osmosis process.    This dataset was obtained using indoor experimental methods. The raw water was simulated high salinity mine water artificially prepared with tap water. The pretreatment device includes two parts: a porcelain sand filter column and an ultrafiltration device. The designed water volume is 0.5-1.0 m3/h, and the sand filter column is 1500 mm high with a diameter of 10 cm. The filtration flow direction is downward. Firstly, by comparing the physical and chemical properties and filtration performance of the three filter materials, the turbidity of the effluent and the change in the head loss of the filter column are obtained, which serve as the basis for selecting the porcelain sand filter material. The turbidity and head loss, as well as the optimal filtration rate data under different filter layer thicknesses, were obtained through experiments. The relationship between backwash strength, expansion rate, and flushing duration was al
DB  - NCDC
UR  - http://www.ncdc.ac.cn/portal/metadata/06e1852d-3867-4cca-b7d0-d6d4a104844e
ER  -