Pilot study on underground short-flow direct filtration treatment process of mine water
In view of the long processing process,large area and poor operation effect in the current underground treatment of mine water,we proposed the underground direct filtration treatment technology and intelligent equipment with organometallic coil ultrafiltration membrane as the main purification core.A pilot study was conducted on a fully mechanized mining face in a coal mine in Ningdong area.The results showed that under low flux,the direct filtration system operated stably,there was no obvious membrane contamination,and the membrane flux attenuation was less than 3%.When the initial flux was 47.4 L/(m2·h)and the recovery rate was 84.6%,the flux decreased by 9.01%after 48 days of operation.The decrease in membrane flux was primarily attributed to membrane fouling resulting from cake deposition.At the same time,under the constant pressure operation mode,the recovery rate of the direct filtration system was improved,and the water intake decreased with the increase of water production.In the influent turbidity range of 10～30 NTU,the water quality of direct filtration system was relatively stable,and the turbidity of water production was lower than 0.5 NTU.The pilot study results showed that,treatment process of the direct filtration technology was short,the water quality was stable and the anti-pollution performance was strong.And its application advantages was prominent in underground treatment of mine water.
mine waterunderground treatmentultrafiltration membranedirect filtrationshort-flow process
NETL
NSTL
万方数据
