摘要
应用高分子阳离子絮凝剂(CPF-100)和聚丙烯酰胺(PAM)对污水厂剩余污泥进行浓缩脱水实验,研究表明:CPF-100的浓缩脱水效果优于PAM;当CPF-100投加量为1.16‰时,污泥沉降性能改善程度为37.51%;且在CPF-100投加量逐渐增大的初始阶段,污泥沉降性能改善程度随投加量的增加而增大,但CPF-100投加量也不宜过大,当CPF-100投加量超过1.16‰后,反而会使浓缩脱水效果变差。同时,建立了污泥沉降性能改善程度与絮凝剂CPF-100投加量、沉降时间之间的数学模型,其能较好地反映污水厂剩余污泥的浓缩脱水效果。
CPF-100 and PAM were used to improve the performance of surplus sludge concentration and dehydration in a wastewater treatment plant, and CPF-100 was better than PAM. When the dosage of CPF-100 was 1.16‰, the concentration and dehydration efficiency increased 37.51% than no coagulant. The perform- ance of concentration and dehydration increased with the beginning of CPF-100 dosage increase. However, when the dosage of CPF-100 was more than 1. 16‰, the concentration and dehydration performance worsened with an increase in the CPF-100 dosage. Moreover, a mathematical model was proposed and calibrated with the experi- mental data. The proposed model dealt with the relationship between the concentration and dehydration efficien- cy, CPF-100 dosage and settling time. The model was appropriate and feasible to describe the performance of surplus sludge concentration and dehydration in wastewater treatment plants.
出处
《环境工程学报》
CAS
CSCD
北大核心
2011年第12期2797-2800,共4页
Chinese Journal of Environmental Engineering
基金
华中农业大学自主创新基金(博士科研启动)项目(52204-10195)
国家高技术研究发展计划(863)项目(2005AA601010-01)
