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An effective membrane cleaning method - sponge ball cleaning system of tubular membrane

. 4m / s; c___0.16MPa, 1.6m / s; I) ___o. 20MPa, 1.8m / s; E___0.24MPa, 1.9m / s Pressure / MPa (a) 1 sample Figure 6 Pressure wash the relationship between membrane flux recovery sponge balls: B A 5; C for a 10; I ) a 15; E of 20 when a cleaning pressure, flow and time certain, with the increase in the number of small ball, the membrane flux increased recovery; When cleaning the pressure increases,[link widoczny dla zalogowanych], the circulating flow along with the increased membrane increase the recovery of flux. This is mainly due to increase in the number of sponge balls, with the liquid in the running process on the membrane surface increases the odds of scrub,[link widoczny dla zalogowanych], the cleaning effect thereby increasing the pressure recovery flux / MPa (b) 2 samples increased; liquid flow rate increases , feed flow rate increases, which is equivalent to an increase in the same time the number of small ball, so the increase in pressure and increase the number of sponge balls has the same effect. In addition, the flow accelerated, sponge ball speed,[link widoczny dla zalogowanych], the cleaning effect is improved decontamination. Table 2 lists the different operating conditions of membrane flux recovery rate data. * 68 * Membrane Science and Technology, Volume 23 * Due to the temperature difference causes, recovery rate of over 100% 4 Conclusions 1) PVDF tubular membrane in the starch solution to run, with the increase of running time, the flux decreases; 2) The rinse cycle method can be part of rehabilitation of contaminated membrane flux; 3) using a sponge ball cleaning method can be effective in restoring contaminated membrane flux, recovery rate could reach the level of the initial membrane flux; 4) of sponge ball cleaning method is the main factor the number of sponge balls and cleaning traffic. References [1] Liu Mo E, Li Xuemei, MSL light, and so on. Membrane separation technology [M]. Beijing: Chemical Industry Press ,1998.85 - 87. [2] MulderM. Basic principles of membrane technology [M]. Li Lin, translated. Beijing: Tsinghua University Press,[link widoczny dla zalogowanych], 1999.120 ~ 121. Researchonaeffectivemethodofwashingmembrane-ThesystemofwashingmembranewithspongeballsLJUEnhua, HUANGuolan, DUQiyun, MENPenghui (MotianCompany, TianjinPolytechnicUniversity, Tianjin300160, China) Abstract: ThesystemofwashingmembranewithspongeballsWasstudiedThewashingmethodisveryefiectivefortubularmembranewashing. Keywords: tubularmembrane; spongeballswashing (on the next page 64) NewvistasforzeolitemembranesLIBangmin, WANGJinqu, DINGChangsheng2 (1.InstituteofAdsorptionandInorganicMembrane, DalianUniversityofTechnology.Dalian116012, China; 2.Jir ~ houPetrochemicalCompany, Jinzhou121001,[link widoczny dla zalogowanych], China) Abstract: Thesixtypezeolitemembr ~ \Thesynthesismethodsofz ∞ litemembraneswerereviewed. Thedevelopmentandapplicationsofzeolitemembr ~ \sessed. Theopinionsontheresearchprospectonthisfieldwerealsopresented. Keywords: zeolitemembrane; synthesis; application

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