CAJ | 학술논문

采用Fe2+-Al3+紫外催化臭氧工艺处理生化后腈纶废水，实现废水中有机组分的有效化和矿化作用，使其达标排放。分析了金属离子和紫外光催化臭氧顺序及协同作用，考察了氨氮及有机物的COD去除率，最后通过pH转化特征和傅里叶红外光谱分析处理前后有机物的形态演化。结果表明，水力停留时间2.0 h时，Fe2+-Al3+和紫外光协同催化臭氧的氧化作用最好，COD去除率达77.4%；氨氮减少缓慢，去除率为8.87%；有机物的去除效率为60%时，BOD/COD提高到0.277，产生大量微生物可接受的小分子有机物。生化后的腈纶废水经工艺氧化后有机物转化为有机酸，溶液pH值降低。经红外光谱分析，影响生物降解性的惰性基团减弱或消失。
채용Fe2+-Al3+자외최화취양공예처리생화후정륜폐수，실현폐수중유궤조분적유효화화광화작용，사기체표배방。분석료금속리자화자외광최화취양순서급협동작용，고찰료안담급유궤물적COD거제솔，최후통과pH전화특정화부리협홍외광보분석처리전후유궤물적형태연화。결과표명，수력정류시간2.0 h시，Fe2+-Al3+화자외광협동최화취양적양화작용최호，COD거제솔체77.4%；안담감소완만，거제솔위8.87%；유궤물적거제효솔위60%시，BOD/COD제고도0.277，산생대량미생물가접수적소분자유궤물。생화후적정륜폐수경공예양화후유궤물전화위유궤산，용액pH치강저。경홍외광보분석，영향생물강해성적타성기단감약혹소실。
Acrylic fiber wastewater was treated by heterogeneous catalytic ozone process combined with Fe2+-Al3+ and UV. Affecting factors of oxidation capacity were discussed in detail and organic transition was inspected by FTIR and pH transition study before and after the catalytic ozone process. The result shows that Fe2+-Al3+and UV catalyzation have the best oxidation efficiency with COD removal rate up to 77.4%. The content of ammonia nitrogen decreases slowly and the removal rate is only 8.87%. Large amounts of microbial acceptable organic molecules were generated when organic removal rate was 60% along with the BOD/COD rate of 0.277. The acrylic fiber wastewater after the treatments has low pH and organic acids are formed from the oxidation of organic compounds. Moreover, fewer inert groups exist that can influence biological degradability.