啤酒厂污泥与鸡粪接种菌剂堆肥除臭效果及其作用机制

通过探讨功能性菌剂对堆肥化进程的影响,为减少啤酒厂污泥与鸡粪堆肥臭气产生提供理论依据,将自制具有去除臭味能力的微生物菌剂DF-1接种至啤酒厂污泥与鸡粪的堆体中,测定堆肥化过程中各参数的变化和微生物群落及菌剂DF-1中优势微生物变化情况,以不接种堆体为参照。结果显示,菌剂DF-1中优势菌种为乳酸乳球菌、热带假丝酵母及绿色木霉。相对于不接种菌剂的堆体而言,接种菌剂DF-1的啤酒厂污泥与鸡粪堆体在升温期和高温期仅感觉到微弱的臭味,降温期勉强感觉到臭味,堆肥达到稳定状态后则感觉不到臭味。堆肥的升温期,菌剂中优势菌种乳酸乳球菌,热带假丝酵母和绿色木霉均可检测到;堆肥的高温期,菌剂中优势菌种仅检测到乳酸乳球菌;堆肥的降温期和腐熟期,菌剂中优势菌种仅检测到绿色木霉;菌剂DF-1中优势微生物在堆肥过程中存在一个交替演变的过程。

The Effect of Deodorization of Brewery Sludge and Chicken Manure Composting by Inoculating Flora and Its Mechanism

The self-made Flora DF-1 with the ability of removing odor was inoculated into the pile of brewery sludge and chicken manure to inspect its influence during the process of composting. Under the different composting time conditions, the microbial community structure, the releases of NH3 and H2S concentration, pH value and the dominant microbial of flora DF-1 were investigated. The deodorization effect was examined using the method of odor by sense. The results showed that Lactococcus Lactis, Candida tropicalis and Trichoderma viride were the dominant bacterials of flora DF-1. In the composting process of the pile of brewery sludge and chicken manure with the Flora DF-1, the odor was small in the temperature-rising period and high temperature period, and mild in the cooling period, but disappeared in the maturity period. It stated that the Flora DF-1 had an effective ability for deodorization in the pile composting. Three dominant bacterials of flora DF-1 were detected in the temperature-rising period of composting. Only Lactococcus Lactis was detected in high temperature period of composting. Only Trichoderma viride was detected in cooling period and maturity period of composting. It indicated that there was an alternating evolutional process of the dominant bacterials of flora DF-1 during the composting process.