Application Of CMFW-2 Continous Microfiltration Technology In Treatment Of Reclaimed Water

This thesis summarizes domestic and international reclaimed water treatment methods, combines the relevant theories of the MF separation process.First, improves final water quality and takes the economic factors into account. Then makes some basic explorations mainly from water quality, hydraulic character of MF separate process, membrane fouling of MF separate process, so as to apply CMFW-2 Continuous Microfiltration technology to reclaimed water treatment of secondary water in sewage treatment plant. The research results show that:1. The final water quality of CMFW-2 Continuous Microfiltration device is superior to Water Quality Standard for Urban Water Consumption (Exposure draft) (2001 annual). After being disinfected, it can be used to wash lavatory, clean road, control fire, afforest gardens, wash car and construct buildings etc.2. The effect factor of the final water quality of CMFW-2 Continuous Microfiltration device: the pretreatment is very necessary; the optimal run parameters are operation pressure of 0.12～0.15MPa and filter period of 18～30min.3. V∈[0,1200], The function relation between producing water volume (V) of CMFW-2 Continuous Microfiltration membrane and filter time (t) is as follows:, V∈[0,1200] R2=0.9998It is obvious that V and t take on the quadratic relation, cake layer filtration acts the main function..4. The change curve between completely water rate resume coefficient of CMFW-2 Continuous Microfiltration membrane and filter period indicates that:(1) The change curve between completely water rate resume coefficient of CMFW-2 Continuous Microfiltration membrane and filter period presents the form of the ladder to drop, it is obvious that air, water recoil flush eliminate membrane fouling a good result. (2) With secondary water membrane filter period going on, completely water rate resume coefficient of CMFW-2 Continuous Microfiltration membrane becomes small gradually.5. After chemistry cleaning, the fouling layer of Microfiltration can be removed, the membrane flux can be resumed to the initial filter competence.6. The result in the economic technology shows that: CMFW-2 Continuous Microfiltration device has merits of low operation pressure, large water production, low price, long membrane performance life, low final water turbid degree, etc.