盐度和底物浓度对海水养殖场有机废弃物厌氧发酵产氢的影响的研究

《盐度和底物浓度对海水养殖场有机废弃物厌氧发酵产氢的影响的研究》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、Hydrolysisofmaricultureorganicwasteusingtreatmentmethodsisinvestigated.Theresultsshowthatthebestmethodiscompoundenzymatictreatment,thereleasingofSCOD,carbohydrateandproteinareenhancedby1.3,0.9,1.3foldsrespectively.Theoptimumprocessingtimeis6~8h.Acidandalkalimethodsarenoteffectiveforthereleasingo

2、fcarbohydrate,butmoreeffectiveforthereleasingofSCODandproteinthanenzymatictreatment.Theoptimumprocessingtimewas8~12h.S-TEmethodcanhydrolyzeorganicwasterapidly,buttheoptimumtimeforreleasingofSCODandproteinis10h.Theeffectofhydrolysisonhighconcentrationsofmariculturewasteusingenzymatictreatmentismo

3、reeffectivethanthatonlowconcentrations,italsoneedsmoretime.Hydrogenproductioncharacteristicsofdifferentconcentrationsofmaricultureorganicwasteareinvestigated.Theresultsshowthat,thehydrogenproportionisthehighest(82.1%)whiletheconcentrationis20g/L;andthehighestcumulativehydrogenproductionis45.4mL/

4、mgVSSwhiletheconcentrationis5g/L.Thereleasingofsolubleproteinisfargreaterthanutilizing.SCODfluctuates:firstdecreaseandthenincrease;attheendofthefermentationSCODisstillhigh.ThepHdecreasegradually,pHis6.2~6.6atthefasteststageofhydrogenproduction.Fermentationproductsaremainlyaceticandethanol,itbelo

5、ngstoethanoltypefermentation.Effectofhydrogenproductionondifferentsalinityofmaricultureorganicwasteisinvestigated.Theresultsshowthat,thereisnoinfluenceontotalamountoffermentationgaswiththeincreaseofsalinity,buthydrogenratioisreduced.Thereleasingofcarbohydratesispromotedinacertainrangeofsalinity,

6、butthereisnoeffectmorethan3.0%salinity.Theincreaseinsalinitycaninhibittheproductionofpropionicandbutyric,andfermentationtypeofmixedacidconvertstoaceticfermentation.Keywords:Maricultureorganicwaste;Fermentativehydrogenproduction;Salinity;Thermophilicenzymehydrolysis(S-TE)目录0前言....................

7、................................11绪论....................................................31.1海水养殖废弃物处理技术的研究进展......................................................31.1.1海水养殖污染处理技术..............................................