CAJ | 학술논문

采用强制通风静态仓进行粪便和生活垃圾混合堆肥.以玉米秸为调理剂.石灰调节pH,考察正压鼓风和负压抽吸2种通风方式对不同堆料配比堆肥过程的控制效果.试验结果表明,5种堆料配比的中层温度都达到了50℃.并保持了5 d以上,达到了堆肥无害化和稳定化的要求.正压鼓风堆料底部温度较低,负压抽吸堆料底部热量容易聚集,但是后者堆体温度分布相对均匀.负压抽吸对水分的去除效果差于正压鼓风.对于温度未达到50℃的堆料应回流处理保证无害化.粪便有机物含量高,堆肥初期易酸化,添加石灰调节pH,使堆肥顺利升温.缩短发酵期,石灰合理添加量为2%(质量分数).采用负压抽吸的通风方式,散除堆肥初期的挥发性有机酸,再经过冷凝除臭器脱酸除臭后排放,是一种可取的方式.
채용강제통풍정태창진행분편화생활랄급혼합퇴비.이옥미갈위조리제.석회조절pH,고찰정압고풍화부압추흡2충통풍방식대불동퇴료배비퇴비과정적공제효과.시험결과표명,5충퇴료배비적중층온도도체도료50℃.병보지료5 d이상,체도료퇴비무해화화은정화적요구.정압고풍퇴료저부온도교저,부압추흡퇴료저부열량용역취집,단시후자퇴체온도분포상대균균.부압추흡대수분적거제효과차우정압고풍.대우온도미체도50℃적퇴료응회류처리보증무해화.분편유궤물함량고,퇴비초기역산화,첨가석회조절pH,사퇴비순리승온.축단발효기,석회합리첨가량위2%(질량분수).채용부압추흡적통풍방식,산제퇴비초기적휘발성유궤산,재경과냉응제취기탈산제취후배방,시일충가취적방식.
Static composting vessel with active ventilation was set to investigate the process control of night-soil/municipal solid waste co-composting with maize straw as amendments and lime as pH controller. Results showed that mixtures prepared with different ratios of composting material all reached ceiling temperature of higher than 50 'C and maintained more than 5 days, which met the requirement for the innocuity and stabilization of composting. Ventilation methods affected temperature distribution of piles. Blow ventilation had the effects of driving heat to the apex of the pile whilst the base remained cool, while the suck ventilated pile presented relatively uniform temperature distribution with base temperature easy to gather than that of blow ventilated pile. Blow ventilation showed positive effects to moisture volatilization than suck ventilation. The mixture residues with temperature lower than 50 ℃ should be recycled to composting process in order to keep the innocuity. Acidification at start-up stage causing by the high organic content of night-soil could be reduced by adding lime at dosage of 2% weight ratio, leading to rapid rising of temperature and short composting period. To dispel volatile acid by suck ventilation and controlled by condensation was also, an alternative.