CAJ | 학술논문

以粉煤灰和石灰石为原料,加入一定量矿化剂,在微波辐照下进行改性,得到吸附材料粉煤灰沸石(FZ),通过X射线衍射和电镜扫描等方式对粉煤灰辐照改性原理及产物结构等进行了分析,通过添加不同比例的粉煤灰对城市污泥进行了钝化实验研究,并对钝化作用机理进行了分析,对钝化污泥中重金属含量变化及养分含量进行了测试,实验结果表明,改性粉煤灰对污泥中含重金属Zn、Cu、Mn具有明显钝化作用,对污泥中养分具有良好的滞留效果,经钝化处理后,污泥中重金属Zn、Cu、Mn含量都显著低于国家农用标准,污泥渗滤液中全氮含量低于中国地面水环境质量标准(10 mg·L~(-1)),全磷含量低于污水排入城市下水道水质标准(1 mg·L~(-1)).
이분매회화석회석위원료,가입일정량광화제,재미파복조하진행개성,득도흡부재료분매회비석(FZ),통과X사선연사화전경소묘등방식대분매회복조개성원리급산물결구등진행료분석,통과첨가불동비례적분매회대성시오니진행료둔화실험연구,병대둔화작용궤리진행료분석,대둔화오니중중금속함량변화급양분함량진행료측시,실험결과표명,개성분매회대오니중함중금속Zn、Cu、Mn구유명현둔화작용,대오니중양분구유량호적체류효과,경둔화처리후,오니중중금속Zn、Cu、Mn함량도현저저우국가농용표준,오니삼려액중전담함량저우중국지면수배경질량표준(10 mg·L~(-1)),전린함량저우오수배입성시하수도수질표준(1 mg·L~(-1)).
Under the microwave irradiation, a highly effective adsorptive material-zeolitized fly ash (FZ) was made by adding a certain amount of mineralizer in the raw material of the limestone and fly ash. The structure of zeolite and the mechanism of modification were investigated by the analysis of XRD and SEM. The stabilization mechanism was analyzed and the variation of heavy metals and nutrient contents in sewage sludge were investigated through the sludge stabilization experiment by mixing zeolitized fly ash in the municipal sewage sludge. It was indicated that the zeolitized fly ash had obvious stabilization effect to heavy metals (Zn.Cu.Mn) and had apparent retention ability to the nutrients contents of N.P of the municipal sewage sludge. The heavy metals contents of Zn, Cu and Mn were all significant lower than those in the national control standards for pollutants in sludges from Agricultural. After the stabilization treatment of the municipal sewage sludge, the total content of N was lower than that in the national surface water environmental quality standards (10 mg/L) , the total content of P was lower than that in Quality Standard of the Sewage discharged into the city sewer system(1 mg/L).