环境工程学报2017，Vol.11Issue(10)：5609-5614,6.DOI:10.12030/j.cjee.201612022
脱硫石膏耦合微波对生产燃料乙醇厌氧消化污泥脱水性能的影响
Enhancing dewaterability of fuel ethanol producing anaerobic digestion sludge by microwave combined with desulfurization gypsum
摘要
Abstract
In order to make the sludge dewatering as agricultural resources,microwave in different power (800,640 and 560 W) and time (60,120 and 180 s) coupled with desulfuration gypsum (2,4,6 and 8 g · L-1) was used to improve the dewaterability of fuel ethanol producing anaerobic digestion sludge.The improvement effect and related mechanism were discussed.The results showed the optimal condition was at desulfurization gypsum (6 g · L-1) coupled microwave (640 W,120 s).At the optimum processing conditionss Specific resistance to filtration(SRF) decreased to 1.05 × 1012 m · kg-1,reduced by 87.5％ compared with the original sludge,by 77.80％ compared with adding desulfurization gypsum and 75.60％ compared with microwave alone.In addi tion,after coupling treatment,scanning electron microscopy (SEM) showed that the flocs tended to be dense and with larger pore size,easy solid-liquid separation.Thermogravimetric (TG-DTG) curves showed that the ini tial temperature and thermal dehydration peak moved forward.Therefore,with the synthetic effect of desulfurization gypsum and microwave,dewatering performance is obviously improved and better than a separate conditioning effect.At the same time,the organic matter content of sludge can meet the requirement of raw material preparation after treatment.关键词
燃料乙醇/厌氧消化污泥/脱硫石膏/微波/脱水性能Key words
fuel ethanol/anaerobic digested sludge/desulfurization gypsum/microwave/dewatering performance分类
资源环境引用本文复制引用
王燕杉,王维红,台明青,冯殿宝..脱硫石膏耦合微波对生产燃料乙醇厌氧消化污泥脱水性能的影响[J].环境工程学报,2017,11(10):5609-5614,6.基金项目
国家自然科学基金资助项目(51668062) （51668062）
