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有机废弃物,如乳业废弃物,是一种高含水有机废弃物.含有高浓度的有机物和营养物质.因此,其处理不充分将导致严重的水污染.最近乳业废弃物处理已经取得了重大进展,可以将该废弃物通过厌氧消化制取沼气.该处理方法既可以减少水污染,还可生产生物质能源.本文研究了厌氧消化和沼气回收技术,应用于乳业废弃物的处理,使其能源化利用.文中分析了两种类型乳业废弃物的特点,通过试验评估了沼气生物质能的产生潜力,并对不同类型的沼气池配置与使用情况进行了比较.结果表明:厌氧消化产沼气是其处理的有效方法.案例1每天可以产生21.5 m~3甲烷,相当于产生53 k Wh/d的能量,而案例2每天仅产生8.6m~3甲烷,相当于产生26 k Wh/d的能量.研究还表明,常规消化生物质燃气产生量较低,仅为4.7~11.2 m~3/d,而利用厌氧过滤技术生物质燃气产生量为1.7~4.3 m~3/d.基于该转化率,有机废弃物有效消化转化为沼气,其回收沼气可为乳业生产提供足够的能源,实现有机废弃物的可持续利用.
Organic waste, such as dairy waste, is a high-water-content organic waste containing high concentrations of organic matter and nutrients and therefore its inadequate treatment can lead to serious water pollution. Significant advances have been made in the recent disposal of dairy wastes , The waste can be biogas produced by anaerobic digestion, which can not only reduce water pollution, but also produce biomass energy.In this paper, the technology of anaerobic digestion and biogas recovery was applied to the treatment of dairy wastes, Its energy utilization.The paper analyzes the characteristics of two types of dairy wastes and evaluates the potential of biogas production by experiments and compares the disposition and usage of different biogas digesters.The results show that: Biogas production is an effective method for its treatment Case 1 produces 21.5 m 3 methane per day, equivalent to 53 kWh / d of energy, while Case 2 produces only 8.6 m -3 methane per day, equivalent to 26 k Wh / d.The energy consumption of conventional digested biomass gas is only 4.7 ~ 11.2 m ~ 3 / d, while the production of biomass gas using anaerobic filtration is 1.7 ~ 4.3 m ~ 3 / d. Based on the conversion, organic The wastes are effectively digested and converted into biogas. The recovery of biogas can provide enough energy for the dairy industry to realize the sustainable utilization of organic wastes.