The requirements of ultrafiltration membranes for influent water quality
Turbidity<5°,Particle size<5um, Suspended matter<5mg/L, 2<PH<13
The temperature is 50℃, ultra-filtered water is used for backwashing.
Ultrafiltration equipment should be installed in a workshop with an ambient temperature of 4℃～30℃.
If the ultrafiltration module and device are not used for a long time (more than 1 week), a 2% sodium hypochlorite solution or 0.5% to 1% hydrogen peroxide solution should be prepared to fill the membrane module for storage. The protection fluid should be replaced within 3 months.
When the membrane module is blocked after long-term use and the flux is reduced, it should be cleaned with 1% hydrogen peroxide, and then soaked in a dilute acid or dilute alkali (5%-10%) solution, and then repeatedly cycled and washed.
It must be used for 1 hour after the machine is turned on with clean water (the filtered solution must be discharged) for storage or washing with reagents.
The ultrafiltration membrane module or device should be stored in a wet state, never in a dry state.
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