This real work is an anti extrusion water bag made of a filter bottle stopper and TPU environmental protection material.When in use, first put the sewage into the water bag and tighten the bottle stopper. Open the bottle mouth and squeeze the water bag. Under the combined action of forward osmosis and reverse osmosis, the water will be filtered by biofilm material and carbon fiber tissue to intercept sludge and macromolecular particulate pollutants, so as to meet the demand of emergency drinking water in the field.
(1) The selected biofilm materials were tested through pumping filter experiments and self-designed forward osmosis experiments in terms of treatment difficulty, over-water flux, impact strength, retention efficiency, and other aspects, to determine the membrane materials that are ultimately suitable for the water purification bag structure.
(2) A suitable water purification bag structure was designed to enable it to utilize the principle of combining forward osmosis and reverse osmosis technologies, increase the over-water flux, and improve the filtration effect.
(3) We have searched for suitable materials and production processes to complete the physical production of positive osmosis water purification bags based on biofilm materials. It can be recyclable within a certain number of times. Its filtration and water purification effect is visible to the naked eye.
