环境工程学报2013，Vol.7Issue(7)：2685-2688,4.
碱预处理污泥产酸效果及其生物群落研究
Studies on microbial structure and volatile fatty acids accumulation with different alkaline pretreatment
摘要
Abstract
Volatile fatty acids (VFAs) as internal carbon source of biological nutrient removal were improved in the process of hydrolysis and acidification.Different alkaline doses were used to pre-treat sludge for enhancing VFAs production,and sludge used in this study was from secondary settling tank of Luofang wastewater treatment plant in Shenzhen.In process of hydrolysis and acidification of alkaline pretreatment sludge,the concentration of VFAs was determined by gas chromatography (GC).Polymerase chain reaction denature gradient gel electrophoresis (PCR-DGGE) was used to analyze the main microbial structure involved in hydrolysis and acidification process.The experimental results show that the total concentration of VFAs can reach to 3 473 mg/L when alkaline dose is 0.20 g NaOH/g VSS at 15 days,while the initial concentration of protein is 1 780 mg/L.Simultaneously,three microbial species,including Proteobacteria,Firmicutes and Bacteroidetes,participate in the hydrolysis and acidification reaction.关键词
污泥/碱预处理/挥发酸/DGGEKey words
sludge / alkaline pretreatment / volatile fatty acids / DGGE分类
建筑与水利引用本文复制引用
刘亚利,袁一星,杜茂安,康晓荣..碱预处理污泥产酸效果及其生物群落研究[J].环境工程学报,2013,7(7):2685-2688,4.基金项目
国家"863"高技术研究发展计划项目(2012AA063603-02) （2012AA063603-02）
