水葫芦净化富营养化水体及其能源化利用.pdf

文档介绍：左右。水葫芦经过厌氧发酵后,可利用于农作物的元素氮、磷、钾几乎没有损失。水葫芦发酵后的沼液的有机质含量比人粪尿高5-6倍,氮素比例也较高,渣肥的养分含量高,含有丰富的有机质和较多的腐植酸。关键词:水葫芦,净化,去除率,厌氧发酵,综合利用AbstractWaterhyacinth(Eichhorniacrassipes),introducedintoChinain930’s,,,thestate·of-the-,—ly,,anaerobicfermentationofwaterhyacinthforbiogasproductionWasdevelopedforwaterhyacinth,.(1)-ions(CODcrrangedfrom500to700me/L).(2)Theplanthassignificantpurificationability,theremovalratesofCOD,TNandTPin30daysreach660/0-90%,70%-85%and55%-60%,,andpurificationrateofCODandTNdecreasingconcentrationofwastewater,whilethepurificationrateforTPislessaffectedbyinitialpollutantconcentrationinwastewater.(3).03kg/m'-aTP.(4)Parameterssuchasinoculatingratio,choppingsize,andtemperatureonanaerobicfermentionofwaterhyacinthweretestedandalloptimuminoculatingratiol:l(TS);’/kg(TS)paringwiththeapplicationofmiddletemperature,highertemperaturehasnoobviousadvantageforbiogasproduction;Waterhyacinthanaerobicdigestiongeneralacidificationtimeis5-10days.(5)Earlywaterhyacinthanaerobicdigestion,pHlowerquickly,,pHincreased,wimrea