洁霉素药渣灰改善城市污泥脱水性能研究

发布时间：2018-04-04 02:48

本文选题：城市污泥　切入点：洁霉素药渣灰　出处：《环境科学与技术》2016年11期

【摘要】：污泥脱水是污泥处置的重要步骤,利用废物洁霉素药渣灰和聚丙烯酰胺(PAM)对污泥进行调理,根据污泥脱水性能的相关指标变化,探讨其对污泥脱水性能改善的效果及机理。研究结果表明,单独使用洁霉素药渣灰调理城市污泥,投加量为8 g/L时,污泥沉降比(SV)为51%,污泥比阻(SRF)减小28%;洁霉素药渣灰联合PAM使用时,比单独使用PAM的污泥可压缩性系数下降40.53%;污泥扫描电镜(SEM)图片表明,经过洁霉素药渣灰处理的污泥,污泥结构发生明显变化,能形成致密且具有相对较大孔径的絮体;污泥热重(TG-DTG)曲线显示,与原污泥相比,洁霉素药渣灰联合PAM调理污泥的脱水起始温度和热重峰明显前移,污泥脱水性能明显得到改善,在污泥最佳脱水条件下协同使用洁霉素药渣灰和PAM,8 kg洁霉素药渣灰相当于24 g PAM,但是二者的脱水机理不同。
[Abstract]:Sludge dewatering is an important step in sludge disposal. The sludge is treated with waste cinnamycin residue and polyacrylamide (PAM). According to the change of sludge dewatering performance, the effect and mechanism of sludge dewatering performance improvement are discussed.The results showed that the sludge sedimentation ratio (SVV) was 51%, sludge specific resistance (SRF) was reduced by 28% when the amount of sludge was 8 g / L, and the sludge ratio was decreased by 28% when the sludge was treated with cinnamycin cinder ash alone, and when the dosage was 8 g / L, the sludge sedimentation ratio was 51%, and the sludge specific resistance ratio (SRF) decreased by 28%.Compared with the sludge treated with PAM alone, the compressibility coefficient of sludge was decreased by 40.53, and the SEM images showed that the sludge structure changed obviously after the sludge was treated with cinnamon cinder, and the flocs with relatively large pore size could be formed.The TG-DTG curve of sludge showed that compared with the original sludge, the initial temperature and the peak of thermogravimetric peak of sludge treated with cinnamycin cinder combined with PAM moved forward obviously, and the dewatering performance of sludge was improved obviously.Under the optimum conditions of sludge dewatering, the synergistic use of jelly residue ash and PAM 8 kg cinder ash is equivalent to 24 g PAM, but the mechanism of dehydration is different between them.
【作者单位】：南阳理工学院土木工程学院;河南安装集团有限责任公司;
【分类号】：X705

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