反渗透膜清洗技术
Tight Spacing
粗糙表面 Rough Surface
界面层的盐浓度
Salt Concentration in the Boundary Layer
Velocity: Vin > Vout
Salt Concentration : TDSin 24 hrs
选择方案 Options:
亚硫酸氢钠 Sodium Bisulfite 1%
Isothiazolone - PermaClean PC-56
Isothiazolone - PermaClean PC-55
甲醛 Formaldehyde – carcinogen
苯乙哌啶酮 – 膜损 Gluteraldehyde - membrane damage
膜 冲 洗
Membrane Flushing
如果系统停车,渗透水冲洗
Permeate flush if system shuts down
作为一种"mini清洁"
Acts as a "mini clean"
减少污垢和水锈
Reduces fouling and scaling
清洁 Cleaning
RO需要清洁的需要
RO's need to be Cleaned!
Typically:
SDI 3 -5 每年清4次 Cleaning 4 /year
SDI 1- 3 每年清2次 Cleaning 2 /year
SDI 15% decline
在10-15%下降后
清洁优化RO性能
Cleaning after a 10-15%
decline maximizes
RO performance
等及久清洁降低RO性能Waiting too long
to clean reduces
RO performance
影响清洗的因素
Factors effecting Cleaning
装置设计 Plant Design
装置运行 Plant Operation
膜 Membrane

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