餐厨垃圾特性分析及处理方式探讨——以广西师范学院食堂餐厨垃圾为例  

Discussion on Treatment and Characteristic Analysis of Food Waste: A Case Study on Food Waste from Canteens in Guangxi Teachers Education University

作　　者：宇鹏[1] Yu Peng(Key Laboratory of Beibu Gulf Environment Change and Resources Use Ministry of Education, College of Environment and Life Science, Guangxi Teachers Education University, Nanning Guangxi 530001)

机构地区：[1]广西师范学院环境与生命科学学院,北部湾环境演变与资源利用教育部重点实验室,广西南宁530001

出　　处：《环境卫生工程》2016年第6期8-10,共3页Environmental Sanitation Engineering

基　　金：2013年度广西师范学院教师前期基础研究基金--餐厨垃圾厌氧消化产氢控制因素优化及机理研究

摘　　要：以广西师范学院食堂餐厨垃圾为研究对象,分析测试其春、夏、秋、冬4季的p H、密度、TS、VS、固定碳、灰分等理化指标,得出其主要特性：1p H为5~6.5,呈偏酸性,密度约1 kg/L,含水率高,TS为8%~20%,VS较高、约85%,固定碳约4%,灰分为5.5%~16.5%;2早餐后餐厨垃圾的p H、密度、TS是一日三餐中最低的,而其灰分是一日三餐中最高的;3春、夏2季餐厨垃圾固定碳含量明显高于秋、冬2季。预处理＋两相（产酸相＋产甲烷相）厌氧消化是适于处理这种特性餐厨垃圾的工艺。Physical and chemical indicators of food waste from canteens in Guangxi Teachers Education University were analyzed and tested, including pH, bulk density, TS, VS, fixed carbon and ash in different seasons. From analysis and test re- sults, three main characteristics were concluded. Firstly, it was acidic and pH was 5 ~ 6.5, bulk density was about 1 kg/L, moisture content was high and TS was 8% ~ 20%, VS was about 85%, fixed carbon was about 4%, and ash was 5.5% ~ 16.5%. Secondly, pH, bulk density and TS of food waste after breakfast was the lowest in three meals a day, and its ash content was the highest. Last, fixed carbon content in spring and summer was significantly higher than in autumn and winter. Pretreatment ＋ two phase （ acidification phase ＋ methanogen phase ） anaerobic digestion was suitable process for treating such food waste.

关 键 词：餐厨垃圾 特性 处理工艺 

分 类 号：X799[环境科学与工程—环境工程]