Reclamation of Acid Rinse Water.

摘要

Manufacturing techniques were modified and optimized for preparing composite films of sulfonated P3O (polyphenylene oxide). Polymer ion exchange capacity (IEC) was coated onto promising porous substrate materials using a meniscus coating technique. Composite films of the 1.5 IEC polymer on Celgard KKX-2porous polypropylene appeared to offer the most promise for meeting the contract requirements of 10 gsfd flux and 90% acid rejection of a feed containing 0.2% H2SO4and 0.1% HNO3. Three trial spiral wound modules were fabricated. The modules were evaluated. Manufacturing procedures were developed to prepare tighter composite films of S-P3O on Celgard KKX-2porous polypropylene. It is suggested that the meniscus coating technique be extended to development of composite films of S-P3O on laminated porous polysulfone (dacron sailcloth backing). Practical casting solvent systems compatible with polysulfone have been developed. (Modified author abstract)