CAJ | 학술논문

微生物胞外聚合物（EPS）主要成分包括蛋白质，多聚糖，核酸和脂类等，这些生物高分子物质结构上带负电的配位基团对重金属有良好的吸附效能。本文利用蒸汽法提取某生活污水处理厂活性污泥胞外聚合物，分别研究了pH值、EPS投加量、吸附时间以及共存离子等因素对Pb2+、Zn2+、Cu2+三种离子在EPS结构上吸附规律的影响，并分析了其吸附机理。结果表明：EPS对三种金属离子的吸附平衡时间均约为45min；在EPS浓度为193.2mg/L时，吸附效果最好；pH值取6时有利于吸附的进行；由于竞争吸附的关系，干扰离子的存在一定程度上抑制了EPS的吸附。从活性污泥中提取胞外聚合物用于重金属污染治理，不但能有效去除重金属，还能同步达到污泥减容减量的目的，以废治污，意义较大。
미생물포외취합물（EPS）주요성분포괄단백질，다취당，핵산화지류등，저사생물고분자물질결구상대부전적배위기단대중금속유량호적흡부효능。본문이용증기법제취모생활오수처리엄활성오니포외취합물，분별연구료pH치、EPS투가량、흡부시간이급공존리자등인소대Pb2+、Zn2+、Cu2+삼충리자재EPS결구상흡부규률적영향，병분석료기흡부궤리。결과표명：EPS대삼충금속리자적흡부평형시간균약위45min；재EPS농도위193.2mg/L시，흡부효과최호；pH치취6시유리우흡부적진행；유우경쟁흡부적관계，간우리자적존재일정정도상억제료EPS적흡부。종활성오니중제취포외취합물용우중금속오염치리，불단능유효거제중금속，환능동보체도오니감용감량적목적，이폐치오，의의교대。
Microbial extracellular polymeric substances (EPS) major components, include proteins, polysaccharides, nucleic acid and lipid. The structure of biological macromolecular ligand with negatively charged groups on the adsorption of heavy metal has good performance. The kind of EPS from activated sludge made as scream from one sewage treatment plant adsorbents to adsorb Pb2+, Zn2+and Cu2+ in water respectively. This paper focused on the influences of pH value, dosage of EPS, adsorption time and co-existed ions on adsorption ability. The results show that EPS of the three metal ions adsorption equilibrium time was about 45min. EPS concentration 193.2mg/L is the best adsorption. Since the activity of extracellular polymeric role of functional groups, acidic and alkaline conditions will inhibit the adsorption of heavy metals, pH take 6 to benefit the adsorption. As the competitive adsorption of the relationship between the presence of interfering ions to some extent inhibited the adsorption of EPS. Extracted from the activated sludge extracellular polymers for heavy metal pollution, not only can effectively remove heavy metals, but also simultaneously achieve the purpose of reduction of sludge volume reduction to waste pollution, meaning greater.