CAJ | 학술논문

以百色低品位的软铝石为为原料,用酸溶法制备聚合氯化铝(PAC),其结构经红外光谱(IR)所证实。考察了培烧温度、培烧时间、反应时间、盐酸加入量和反应温度等因素对Al2 O3溶出率的影响,并对PAC处理某纸厂中段污水的性能进行了研究。研究结果表明,在焙烧温度为750℃,焙烧时间为1 h,酸溶时间为3 h,n (Al2O3)：n(HCl)为1：4,酸溶温度为100℃条件下,煅烧后的熟料的Al2O3的溶出率的达81．7%；在pH=6．0, PAC投入量为120 mg·L-1时,纸厂中段污水的COD的去除率为56．02%,剩余浊度达到4．51 NTU以下,净水效果较好。
이백색저품위적연려석위위원료,용산용법제비취합록화려(PAC),기결구경홍외광보(IR)소증실。고찰료배소온도、배소시간、반응시간、염산가입량화반응온도등인소대Al2 O3용출솔적영향,병대PAC처리모지엄중단오수적성능진행료연구。연구결과표명,재배소온도위750℃,배소시간위1 h,산용시간위3 h,n (Al2O3)：n(HCl)위1：4,산용온도위100℃조건하,단소후적숙료적Al2O3적용출솔적체81．7%；재pH=6．0, PAC투입량위120 mg·L-1시,지엄중단오수적COD적거제솔위56．02%,잉여탁도체도4．51 NTU이하,정수효과교호。
Polymeric aluminum chloride(PAC),which was derived from the starting material bauxite widely distributed in Baise, was prepared by acid-leaching technology and characterized by IR. Various effecting factors of preparation such as calcining temper-ature,calcining time,acid leaching time,the ratio of raw materials to hydrochloric acid and acid leaching temperature were investi-gated by single factors experiment. Consequently,the coagulation/flocculation performance of PAC was also measured. Studies show that the optimum technological conditions obtained by experiments were as follows:the calcining temperature of bauxite 750℃,cal-cining time 1 h,acid leaching time 3 h,the ratio of raw materials to hydrochloric acid 1∶4,acid leaching temperature 100℃. Under these experimental conditions,the maceration rate of Al2 O3 was about 81. 7%. The PAC was applied to the treatment of the raw wa-ter product from a paper industry. The removal rate of COD was achieved 56. 02%,the residual turbidity was less than 4. 51 NTU when the coagulant dosage was 120mg·L-1 and pH was 6. 0. The results showed that PAC clean the raw water with satisfactory re-sults.