葡萄酒蒸馏废水厌氧处理系统的产气能力及其影响因素研究

Biogas-producing capacity of anaerobic treatment system for wine distillery wastewater and factors affecting it

以葡萄酒蒸馏废水为例,研究了厌氧移动床生物膜反应器的产气能力以及有机负荷、厌氧系统进水与出水pH差(ΔpH)、碱度、挥发性脂肪酸(VFA)等对沼气产量、沼气成分的影响。结果得出厌氧移动床生物膜反应器的单位体积产气量因其中填料类型和比表面积不同而不同;有机负荷是影响沼气产量的主要因素,并呈明显的线性相关性,一旦反应器具有较强pH缓冲能力(ΔpH大于1.8),其产气量随有机负荷和COD去除率的提高而大幅增加;COD去除率、VFA、碱度等对沼气的成分均能产生影响;微量营养物质具有优化厌氧运行条件和效果的作用,补充适量的微量营养物质,可在较短时间内使反应器的有机负荷得到提高,进而提高反应器单位体积的沼气产量。

The biogas-producing capability of anaerobic moving bed biofilm reactor and the factors,such as organic loading rate(OLR),the differences between influent pH and effluent pH(ΔpH),alkalinity and volatile fatty acids(VFA),to affect the biogas output and its composition are investigated by taking wine distillery wastewater as testing example.It is suggested that the biogas output per volume of anaerobic moving bed biofilm reactor is varied with the packings and their specific surface areas.Results show that:①O...