环境科学与管理
環境科學與管理
배경과학여관리
ENVIRONMENTAL SCIENCE AND MANAGEMENT
2012年
11期
131-135
,共5页
餐厨垃圾%接种污泥%高固体浓度%厌氧发酵
餐廚垃圾%接種汙泥%高固體濃度%厭氧髮酵
찬주랄급%접충오니%고고체농도%염양발효
Food waste%Inoculum%High-solid%Anaerobic fermentation
文章在12%～18%高固体浓度和中温（35±1）℃条件下,开展了不同接种比例对餐厨垃圾厌氧发酵过程影响的研究。考察了沼气产率、发酵液特性和TS、VS去除率等随接种比例变化的关系。结果表明,接种比例不低于50%的沼气日产率、累积沼气产率和平均甲烷含量显著高于接种量低于25%的发酵过程,并且pH值相较于低于25%的发酵体系能够稳定在6.8～7.2之间。提高接种比例能够降低发酵液中TN、TP和CODcr的浓度。餐厨垃圾与接种污泥TS比为1∶1时,甲烷含量和TS、VS去除率达到最大值,分别为64%、43.6%和52.8%。此时,累积沼气产率为228.6 ml/gVS。
文章在12%～18%高固體濃度和中溫（35±1）℃條件下,開展瞭不同接種比例對餐廚垃圾厭氧髮酵過程影響的研究。攷察瞭沼氣產率、髮酵液特性和TS、VS去除率等隨接種比例變化的關繫。結果錶明,接種比例不低于50%的沼氣日產率、纍積沼氣產率和平均甲烷含量顯著高于接種量低于25%的髮酵過程,併且pH值相較于低于25%的髮酵體繫能夠穩定在6.8～7.2之間。提高接種比例能夠降低髮酵液中TN、TP和CODcr的濃度。餐廚垃圾與接種汙泥TS比為1∶1時,甲烷含量和TS、VS去除率達到最大值,分彆為64%、43.6%和52.8%。此時,纍積沼氣產率為228.6 ml/gVS。
문장재12%～18%고고체농도화중온（35±1）℃조건하,개전료불동접충비례대찬주랄급염양발효과정영향적연구。고찰료소기산솔、발효액특성화TS、VS거제솔등수접충비례변화적관계。결과표명,접충비례불저우50%적소기일산솔、루적소기산솔화평균갑완함량현저고우접충량저우25%적발효과정,병차pH치상교우저우25%적발효체계능구은정재6.8～7.2지간。제고접충비례능구강저발효액중TN、TP화CODcr적농도。찬주랄급여접충오니TS비위1∶1시,갑완함량화TS、VS거제솔체도최대치,분별위64%、43.6%화52.8%。차시,루적소기산솔위228.6 ml/gVS。
Effect of various feed to inoculum ratios on high-solids anaerobic fermentation of food waste was conducted in laboratory scale,which was operated at mesophilic(35℃±1℃) and high-solid(12% to 18% total solids) conditions.The biogas yield,properties of fermentation broth mixture and removal efficiency of TS and VS were investigated.Results showed that inoculation over 50% had a higher biogas production rate,cumulative biogas yield and methane content than those by inoculation ratio less than 25%.Inoculum addition could not only enhance buffer capacity of fermentation system with stable and appropriate pH values,which lied between 6.8 to 7.2,but also reduce the concentration of total nitrogen,phosphorus and CODcr.As the feed to inoculum ratio of 1.0,methane content as well as reduction rate of TS and VS reached the maximums,64%,43.6% and 52.8%,respectively,for which the cumulative biogas yield was 228.6 ml/gVS.
