CAJ | 학술논문

对比了二价和三价铁及其复合药剂对城市污水处理厂除磷效果,研究了搅拌条件对除磷效率的影响,同时研究了混凝后不同形态磷的变化情况。研究结果显示,原始混合液中颗粒态磷、无机溶解态和有机溶解态的磷分别为2.63、0.99、0.28 mg/L。三价铁化学除磷效果最佳,复合药剂次之。当复合混凝剂投加量达到污泥体积0.15%时,TP的去除效率达到最高,之后会随着混凝剂投加量的增加而降低。水力剪切过程对化学除磷效果影响较大,随着搅拌速率的提高,混凝效率逐渐提高,转速达到200 rpm时TP去除率达到最大。
대비료이개화삼개철급기복합약제대성시오수처리엄제린효과,연구료교반조건대제린효솔적영향,동시연구료혼응후불동형태린적변화정황。연구결과현시,원시혼합액중과립태린、무궤용해태화유궤용해태적린분별위2.63、0.99、0.28 mg/L。삼개철화학제린효과최가,복합약제차지。당복합혼응제투가량체도오니체적0.15%시,TP적거제효솔체도최고,지후회수착혼응제투가량적증가이강저。수력전절과정대화학제린효과영향교대,수착교반속솔적제고,혼응효솔축점제고,전속체도200 rpm시TP거제솔체도최대。
Comparison of the phosphorus removal efficiency using ferrous and ferric iron and complex reagent to municipal sewage treatment plant was investigated. The effect of phosphorus removal efficiency of different stirring conditions was also studied with changes of different forms of phosphorus in the coagulation. The results showed that the original mixture of particulate phosphorus, dissolved inorganic and organic dissolved phosphorus were 2. 63 mg/L, 0. 99 mg/L, 0. 28 mg/L, respectively. Ferric caused the best phosphorus removal,followed by the complex reagent. When the complex reagent dosage exceeded 0. 15% by volume of sludge,the highest removal efficiency of TP, reduced with increasing coagulant dosage. Hydraulic shearing force influenced the chemical phosphorus removal greatly. With increasing agitation rate,the coagulation effi-ciency gradually increased. The highest phosphorus removal efficiency was got at the agitation rate of 200rpm.