摘要
目前有关污泥厌氧消化的研究大都着眼于污泥酸化过程中各种短链脂肪酸产量的研究,对糖和蛋白质在污泥水解和酸化过程中的变化以及产量优化研究较少。本文利用响应面法,探究了污泥的SS、初始ORP以及振荡速率对污泥厌氧发酵过程中的SCOD、糖、蛋白质等有机物产量交互影响,并采用响应面法对实验过程进行了优化。研究结果表明,SCOD受初始污泥的ORP和振荡速率影响较大,与污泥的SS关系不大,并且在SS 8.0g/L、初始ORP 0mV、振荡速率60r/min时能取得最大值9 228.5mg/L;而蛋白质则受SS和初始ORP影响较大,最大值1 215.3mg/L在SS为14.0g/L、初始ORP 0mV、振荡速率105r/min时得到。本实验中,调控各因素对糖的释放影响较小。
Currently most research focus on the different short chain fatty acid production in the process of sludge anaerobic digestion.Fewer studies about the changes of protein and carbohydrates in the sludge hydrolysis and acidification process were reported.In this study,the interactive effects of sludge suspended solids（SS）,initial oxidation reduction potential（ORP）and shaking rate on soluble chemistry oxygen demand（SCOD）,soluble protein and carbohydrates were investigated in the WAS fermentation.The condition of experiments was optimized using response surface methodology（RSM）.The results indicated that SCOD content was little affected by SS but highly affected by ORP and shaking rate,and the maximum concentration 9228.5mg/L of SCOD was achieved at SS 8.0g/L,initial ORP〈0mV and shaking rate 60r/min.The maximum concentration ofproteins was achieved at the condition of SS 14.0g/L,initial ORP〈0mV and shaking rate 105r/min,and it was highly influenced by the interaction of SS and initial ORP.In this study,the variations of three factors had a little impacts on the release ofcarbohydrates.
作者
郭士亮
郭亮
张嘉雯
陈月
张增帅
孙健
郭一丁
GUO Shi-Liang GUO Liang ZHANG Jia-Wen CHEN Yue ZHANG Zeng-Shuai SUN Jian GUO Yi-Ding(College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, China The Key Laboratory of Marine Environmental and Ecology, Ministry of Education, Ocean University of China, Qingdao 266100, China The Key Laboratory of Ocean Environmental Geology Engineering of Shandong Province, Ocean Lrniversity of China, Qingdao 266100, China)
出处
《中国海洋大学学报（自然科学版）》
CAS
CSCD
北大核心
2017年第11期103-108,共6页
Periodical of Ocean University of China
基金
国家自然科学基金项目(51208481)资助~~
关键词
剩余活性污泥
厌氧发酵
响应面法
碳源
Waste Activated Sludge（WAS）
anaerobic fermentation
Response Surface Methodology（RSM）
carbon source
