▎ 摘　　要

NOVELTY - Surface environmental protection processing technology for aluminum products involves taking raw material of aluminum veneer, cutting size of aluminum veneer according to processing requirements, and then performing degreasing treatment of aluminum veneer; taking alkali etching tank, then adding 20-30 kg 0.55% sodium hydroxide solution, 2.5-3.5 kg sodium phosphate (Na3PO4), 5-35 kg sodium fluoride oxide (NaF2O2), 5-10 kg NH4HF2, 1-3 kg gluconate, after mixing 5-10 kg of natural plant gum, taking out aluminum plate, placing into alkali etching tank, and performing alkali etching; anodizing aluminum products that have alkali-etched by taking 25-35 pts. wt. zinc phosphate, 15-25 pts. wt. boron fluoride (BF4), 15-20 pts. wt. silicon fluoride (SiF), then adding to inside of oxidation tank, and stirring and mixing thoroughly; taking oxidation solution, and quickly forming oxide film on aluminum plate by dipping, roll coating, and spraying; preparing electrolytic solution. USE - Surface environmental protection processing technology for aluminum products used for curtain wall materials (claimed). ADVANTAGE - The surface environmental protection processing technology for aluminum products is environment friendly; has excellent corrosion resistance and becomes stronger, and compared with traditional organic coatings, graphene/chitosan quaternary ammonium salt composite film has less pollution in production process of raw materials, good compatibility, and better adaptation; improves corrosion protection ability of aluminum product, and also reduces production of pollutants in production process, makes process more green and environment friendly. DETAILED DESCRIPTION - Surface environmental protection processing technology for aluminum products involves taking raw material of aluminum veneer, cutting size of aluminum veneer according to processing requirements, and then performing degreasing treatment of aluminum veneer; taking alkali etching tank, then adding 20-30 kg 0.55% sodium hydroxide solution, 2.5-3.5 kg sodium phosphate (Na3PO4), 5-35 kg sodium fluoride oxide (NaF2O2), 5-10 kg NH4HF2, 1-3 kg gluconate, after mixing 5-10 kg of natural plant gum, taking out aluminum plate, placing into alkali etching tank, and performing alkali etching; anodizing aluminum products that have alkali-etched by taking 25-35 pts. wt. zinc phosphate, 15-25 pts. wt. boron fluoride (BF4), 15-20 pts. wt. silicon fluoride (SiF), then adding to inside of oxidation tank, and stirring and mixing thoroughly; taking oxidation solution, and quickly forming oxide film on aluminum plate by dipping, roll coating, and spraying; preparing electrolytic solution by adding 0.025 wt.%, 0.05 wt.%, and 0.1 wt.% graphene to chitosan quaternary ammonium salt solution, stirring for 10 minutes, and ultrasonically disperse for 1 hour to obtain graphene-chitosan quaternary ammonium salt solution; using aluminum electrode as cathode in solution with best stability, using platinum as auxiliary anode, where deposition current density is 1 megaampere (mA)/cm2, and deposition time is 300 seconds (s), 600 s, 900 s, 1200 s, 1500 s; blowing dry with cold air, and drying at 60 degrees C for 120 minutes to obtain aluminum material with graphene/chitosan quaternary ammonium salt composite film layer; treating treated sewage, where waste water flows into comprehensive adjustment tank, and then is lifted to neutralization reaction tank by lift pump, and at same time, then adding neutralization agent and flocculant and stirred; using waste water completes process of neutralization and flocculation in neutralization reaction tank, and then is lifted by lifting pump to inclined plate settler for precipitation, and then supernatant is discharged up to standard; pumping sludge in comprehensive chamber filter press with screw pump, and then dewatered sludge is transported out; using chromium-containing wastewater flows into chromium regulating tank, adding sulfuric acid to regulating tank to adjust pH to 3, and then adding reducing agent for reduction reaction, after reduction reaction, adding neutralizing agent and flocculant, and then using sewage mud pump which is driven into chrome chamber filter press, and then dewatered sludge is transported to hazardous waste center for treatment; cooling aluminum material, then packaged and sealed to complete entire preparation process.