Method for generating regenerated diaphragm through extracting PVDF from waste diaphragms
A technology for regenerating membranes and membranes, applied in the field of organic solid waste recycling, can solve problems such as secondary pollution of the environment, and achieve the effects of reducing pollution, reducing production costs and realizing reuse.
- Application Information
AI Technical Summary
Problems solved by technology
 1. Clean the waste film
 Put 20 pieces of 1.0㎡ waste membrane elements into the ultrasonic cleaning machine, add water to 2 / 3 of the cleaning machine, then add 300ml of hydrochloric acid, 2000ml of citric acid, then add water until full, turn on the ultrasonic cleaning machine for 2 hours, and take out the membrane elements Check whether it is clean (the surface of the membrane is white, if there is no attachment, it is clean)
 2. Cutting
 Cut the membrane on the cleaned membrane element into small pieces (on the cutting table). Function: facilitate dissolution and centrifugation.
 3. Drying
 The small pieces of membranes were dried in an oven.
 4. Dissolve
 Put the dry and clean small piece of membrane into the dissolution kettle, then add 30 liters of NMP, adjust the temperature of the dissolution kettle to 70°C, turn on the dissolution kettle, and rotate it at a low speed for 2-3 hours.
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