%0 Dataset
%T Experimental data set of high salinity mine water pretreatment unit in dahazi, Yulin City, Shaanxi Province (October 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/06e1852d-3867-4cca-b7d0-d6d4a104844e
%W NCDC
%R 10.12072/ncdc.UTCMW.db2123.2022
%A Zheng Xi
%K Membrane flux;influent load;flushing intensity expansion rate;ultrafiltration membrane
%X For the deep desalination treatment of high salinity mine water, reverse osmosis (RO) membrane method needs to be used to remove the hardness, salinity and other low concentration pollutants in mine water. As the reverse osmosis system has high requirements for the quality of raw water, the silt density index SDI value of the inlet water of the unit needs to be less than 3 and the turbidity is less than 0.5. Using appropriate pretreatment technology to reduce SDI value and turbidity of influent can prevent mechanical damage and reduce pollution on the surface of reverse osmosis membrane, which is very necessary for the safe and stable operation of subsequent rnrr multistage enhanced membrane concentration process. In this paper, porcelain sand filtration + high flux ultrafiltration pretreatment technology is used to remove suspended solids / particles, colloids and macromolecular organics through physical interception, so as to meet the requirements of SDI and turbidity of influent for advanced treatment of subsequent reverse osmosis process. This data set is obtained by indoor experimental method. The raw water is simulated high salinity mine water manually prepared with tap water. The pretreatment device includes porcelain sand filter column and ultrafiltration device. The design water volume is 0.5-1.0 m3/h. The sand filter column is 1500 mm high and 10 cm in diameter. The filtering flow direction adopts downward flow. Firstly, by comparing the physicochemical properties and filtering properties of the three filter materials, the change data of effluent turbidity and filter column head loss are obtained, This can be used as the basis for selecting the filter material of porcelain sand filter column. The data of turbidity, head loss and optimal filtration rate under different filter layer thickness are obtained through experiments. The relationship between backwashing intensity, expansion rate and flushing duration is also obtained, which can be used as the basis