湿热- 离心法分离餐厨废油脂
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2020-02-27 15:03:23
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第24卷第12期2011年12月环境科学研究ResearchofEnvironmentalSciencesVol.24,No.12Dec.,2011收稿日期:2011-03-31修订日期:2011-05-23基金项目:北京市委组织部优秀人才资助项目(2010D005003000004);国家环保公益性行业科研专项(201109035)作者简介:宁娜(1986-),女,河北沧州人,ningna860204@163.com.*责任作者,任连海(1971-),男,河北沧州人,副教授,博士,主要从事固体废物资源化技术研究,renlh@th.btbu.edu.cn湿热-离心法分离餐厨废油脂宁娜,任连海,王攀,岳建伟北京工商大学食品学院,北京100048摘要:为了提高餐厨垃圾中废油脂分离回收效率,采用湿热-离心法分离餐厨废油脂,通过试验探讨了加热时间、温度以及离心转速等处理参数对餐厨废油脂分离回收效率的影响;同时,将其与湿热-重力法进行比较,以确定有利于餐厨废油脂分离回收的适宜工艺条件.结果表明:湿热-离心法较湿热-重力法更有利于餐厨废油脂的分离;随着温度升高和加热时间延长,餐厨垃圾脱油性能呈上升趋势,温度越高,趋势越明显;120℃下湿热处理80min,餐厨垃圾固相内部油脂液化浸出效果最佳,最佳离心转速为2500rmin时,餐厨垃圾废油脂分离回收率最高.关键词:餐厨垃圾;湿热处理;离心;油脂回收中图分类号:X705文献标志码:A文章编号:1001-6929(2011)12-1430-05HydrothermalProcess-CentrifugationforSeparationofWasteGreasefromRestaurantGarbageNINGNa,RENLian-hai,WANGPan,YUEJian-weiCollegeofFoodScienceandTechnology,BeijingTechnologyandBusinessUniversity,Beijing100048,ChinaAbstract:Hydrothermalprocess-centrifugationwasusedtoimprovetherecoveryrateofwastegreasefromrestaurantgarbage.Theeffectsofheatingtime,temperatureandcentrifugationspeedontherecoveryrateofwastegreasefromtherestaurantgarbagewereinvestigatedbyexperimentation.Atthesametime,appropriatetechnologicalconditionssuitableforwastegreaserecoveryfromrestaurantgarbageweredefinedthroughcomparisonwiththehydrothermalprocess-gravitationprocess.Theresultsshowedthatthehydrothermalprocess-centrifugationwasmuchbetterthanhydrothermalprocess-gravitationprocessfortherecoveryofgreasefromrestaurantgarbage.Withincreasedtemperatureandheatingtime,thede-oilingperformanceoftherestaurantgarbageimproved.Furthermore,thetrendbecamemoreremarkableastemperatureincreased.Whenthetemperatureandtheheatingtimereached120℃and80min,theefficiencyoftheinteriorsolidgreaseliquefactionandextractionwasoptimal.Theoptimumcentrifugationspeedforoilseparationfromtherestaurantgarbageeffluentwas2500rmin.Thegreaseseparationratereachedthehighestundertheseconditions.Keywords:restaurantgarbage;hydrothermalprocess;centrifugation;greaserecovery餐厨垃圾俗称泔脚,是指居民在生活消费过程中形成的一种生活废物,主要来自饭店、餐厅以及企事业单
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