| With the development of economy and increase of living level, the demand quantity of water is greatly increased. At the same time, the exacerbation of water quality in the riverhead, the drying up of ground water and the severe pollution of surface water all force people to find a solution to the problem continuously. It is feasible to prepare the water resource in the macroscopic side, such as the project "Ying Huang Ru Jin" .The another important means is increasing the water quality, but the conventional treatment methods of water cann't satisfy the requirement of people, so it is necessary to acquire high quality water of production and life with the new treatment methods of water. Among them, membrane technology is a very new and potential way to develop in the future of treatment vocation of water, and it may also replace the filtration technique in the traditional industry manufacture.This research thesis mainly studies the application of ultrafiltration membrane in the depth treatment of the feedwater and drainage and filtration of half dry red grape wine, which is made up of three aspects as follows. In the first part of research, the feasibility that three different PVC (Polyvinyl Chloride) blend membranes of outside-in directly filtrated the tap water is explored; the pumping time of membrane, the flow dimension of backwashing, the putting method of membrane module and the accession of the granular activated carbon etc in decreasing the fouling of membrane are inspected, and the effect of the blend membranes in removing the premonitory matter of THM(Trihalomethane), the turbidity and the inorganic ion of tap water was investigated. The result shows: three blend membranes all can better remove the fractional premonitory matter of THM and the turbidity; the blend membrane of PVC-PVB (Polyvinyl Chloride -Polyvinylbutyral) can wipe off the ion of calcium and iron in some degree and has no influence in the concentration of magnesium. On the second part, the feasibility that the PVC-CEVA (Polyvinyl Chloride - Chlorine Vinegar) blend membrane of outside-in disposes the simulated domestic wastewater is studied; the influences in the membrane water flux of factor such as the operation pressure of membrane, flux, pumping time, concentration of activated sludge and accession of the granular activated carbon etc are inspected, the effect in the fouling of membrane of the putting method of membrane module and activatedsludge mixed effect of gas method in the reactive pond are investigated; the removal of CODcr and turbidity in the effluent water of membrane are studied. The object list is bright: under the bigger circumstances of changing of the CODcr's concentration at upper effluent liquid of reactive pond, the CODcr's concentration of water that are filtrated from membrane is under 50mg/L in the majority of time, which has achieved the standard of the else life using water that is stipulated by the construction ministry; and the turbidity of effluent water of membrane can be stabilized below 5NTU, which is smaller than the standard of 5NTU stipulated by the construction ministry, these data explain that it is viable to treat the simulated domestic wastewater with the PVC-CEVA blend membrane. In the third part, the viability that the PVDF (Polyvinylidene Fluoride) hollow fiber membrane of inside-out filtrates and clears half dry red grape wine is studied, the influence in the flux of membrane of velocity of flow and pressure in the surface of membrane is inspected; and the influences of membrane in the chromaticity, turbidity, sugar, the rate of conductance of half dry red grape wine and the rinsing method of fouled membrane are studied. The object demonstrates: under the condition of better retaining original taste of half dry red grape wine, PVDF ultrafiltration membrane can better decrease the turbidity of grape wine whose average removal rate is 90%, and the filtrate has no sedimentation when it is preserved in the room temperature half a year; the reduction of the chromaticity... |
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