摘要
针对传统微生物发酵床技术在实际应用中存在的一些问题,本研究采用微生物异位发酵床技术应用于生猪养殖废弃物的处理,探究了试验过程中填料的基本参数变化及养殖废水的吸纳量,为更好地应用和推广微生物异位发酵床技术提供理论依据。结果表明：发酵床填料最高发酵温度为66℃,在40℃以上维持了48 d。试验全过程pH值平均在8左右,处于弱碱性环境下,适宜微生物的好氧发酵。填料含水量保持在50%～65%,适宜微生物的好氧发酵。本研究中每千克填料对生猪养殖废水的吸纳系数为2.53,优于对奶牛养殖废水的吸纳系数。发酵体系微生物以细菌活动为主,填料中的微生物有效地降解、消除废弃物有机物。研究结束时,填料的总养分含量和有机质的质量分数分别为6.19%和56.11%,均达到国家有机肥料关于总养分含量及有机质的质量分数的标准。
In order to provide theoretical basis for application of the ectopic microbial fermentation bed, the efficiency and quality of the ec-topic microbial fermentation bed in processing piggery waste were evaluated by measuring the changes of physicochemical and environmental factors and the absorption of piggery wastewater. The results showed that the fermentation temperature of the filler maintained above 40 ℃ for up to 48 days and the highest fermentation temperature was 66 ℃. The alkaline environment and the moisture of filler remaining 50%～65% during the fermentation was suitable for aerobic fermentation of microorganisms. The absorption coeffient of piggery wastewater of the filler was 2.53, which was better than that of dairy wastewater. Microbial activity was mainly based on bacteria in the fermentation system and the organic matter was degraded and utilized by microorganisms at the same time. After the fermentation, the total nutrient content and the organic matter mass fraction of the filler was 6.19% and 56.11%, respectively, which met with the national standard for organic fertilizer.
出处
《农业资源与环境学报》
CAS
2016年第6期540-546,共7页
Journal of Agricultural Resources and Environment
基金
国家水体污染控制与治理科技重大专项课题(2013ZX07103-06
2015ZX07103-007
2014ZX07510-001)
公益性行业(农业)科研专项课题(201303094-03)
关键词
异位发酵床
填料
微生物
废水
ectopic microbial fermentation bed
filler
microorganism
wastewater
