摘要
在中试规模下,研究青岛市餐厨垃圾与菜市场垃圾混合(质量比1∶1)高温厌氧消化实验,通过监测厌氧消化过程中产气量、气体组成等产气情况和消化液中pH值、SCOD、NH3-H、VFAs含量和组分等化学指标变化,确定混合厌氧消化的最大有机负荷,并分析混合高温厌氧消化技术的可行性,结果表明,(1)青岛市餐厨垃圾与菜市场垃圾混合高温厌氧消化产甲烷具有技术可行性;(2)混合厌氧消化的最大有机负荷可达4.069 kg VS/(m3.d);(3)当系统最大有机负荷时,每天每千克VS最高可产生甲烷量0.346 m3;(4)混合厌氧消化可削减氨氮对餐厨垃圾单独厌氧消化产沼气的影响。
In the pilot scale,the thermophilic anaerobic digestion of the mixture of kitchen wastes and vege-table market wastes （ mass ratio = 1 ： 1 ） was studied. In anaerobic digestion process, chemical index changes of pH value,soluble COD （SCOD）, volatile fatty acids （VFAs） and ammonia in digested liquid and gas situation like gas output and gas composition were monitored. Moreover, the biggest organic load of mixture of kitchen wastes and vegetable market wastes and the technical feasibility of anaerobic digestion of the mixture were also deter- mined and analyzed. The results showed that （ 1 ） Anaerobic digestion of the mixture was technical feasible in Qingdao. （2）The maximum organic loading of the mixture system achieved 4. 069 kg VS/（ m^3· d）. （3）In the mixture system,0. 346 m^3 CH4 were generated by one kilogram VS per day in the maximum organic loading con-dition. （4） Physio-chemical index and gas situation were not affected remarkable by ammonia in the mixture anae-robic digestion process compared with the food waste anaerobic digestion process.
出处
《环境工程学报》
CAS
CSCD
北大核心
2013年第5期1945-1950,共6页
Chinese Journal of Environmental Engineering
基金
青岛市市政公用局资助项目
关键词
餐厨垃圾
菜场垃圾
混合高温厌氧消化
有机负荷
氨氮
kitchen wastes
vegetable market wastes
thermophilic anaerobic digestion
organicloading
ammonia
