CAJ | 학술논문

以天然膨润土作为载体,分别采用酸、碱、铝盐、羟基铝柱撑、热活化等物理化学改性方法对其改性,并综合分析其净化含磷废水的处理效果,改性后膨润土比表面积增加,其活性吸附点和吸附位也大幅增多,进而提高了其表面吸附能力.改性后膨润土吸附净化能力由强至弱依次为:羟基铝柱撑膨润土、铝盐改性膨润土、热改性膨润土、酸改性膨润土、碱改性膨润土;羟基铝柱撑膨润土最佳改性条件为保持OH-与Al3+质量比2.2,搅拌静置后去除上清液,残留物洗净后烘干,其净化含磷废水的最佳试验条件为:在pH值为6的废水溶液中投入3 g改性膨润土,恒温振荡吸附60 min,此时废水中磷去除率可达95.2%.
이천연팽윤토작위재체,분별채용산、감、려염、간기려주탱、열활화등물이화학개성방법대기개성,병종합분석기정화함린폐수적처리효과,개성후팽윤토비표면적증가,기활성흡부점화흡부위야대폭증다,진이제고료기표면흡부능력.개성후팽윤토흡부정화능력유강지약의차위:간기려주탱팽윤토、려염개성팽윤토、열개성팽윤토、산개성팽윤토、감개성팽윤토;간기려주탱팽윤토최가개성조건위보지OH-여Al3+질량비2.2,교반정치후거제상청액,잔류물세정후홍간,기정화함린폐수적최가시험조건위:재pH치위6적폐수용액중투입3 g개성팽윤토,항온진탕흡부60 min,차시폐수중린거제솔가체95.2%.
The natural bentonite was chosen as the carrier, the physical and chemical modification methods just as acid, alkali, aluminum salt, hydroxy aluminium column brace bentonite and thermal methods were chosen for its modification respectively, then comprehensive experimental effect analysis of phosphorus wastewater purified by modified bentonite was studied. The modified bentonite have raised specific surface, its activated adsorption point and adsorption potential increase significantly, therefore the surface adsorption capacity of modified bentonite improves much more. The adsorption purification capacity of modified bentonite is as follows:hydroxy aluminium column brace bentonite is the strongest, then the less are alumina modification, heat modification, acid modification and the least is alkali modification. The best modification conditions of hydroxy aluminium column brace bentonite is that the mass ratio of OH-and Al3+is 2.2, remove supernatant fluid after standing for a moment, wash the residue and make it dried. The best conditions for hydroxy aluminium column brace bentonite wipe off phosphorus is just as follows:in the solution whose pH value is 6, input 3 g modified bentonite, make oscillation adsorption for 60 min at the constant temperature, the remove rate of phosphorus in the wastewater can be 95.2%.