Zupancic Gregor D, Jemec A
National Institute of Chemistry, Laboratory for Environmental Sciences and Engineering, Hajdrihova 19, P.O. Box 660, SI-1001 Ljubljana, Slovenia.
Bioresour Technol. 2010 Jan;101(1):26-33. doi: 10.1016/j.biortech.2009.07.028. Epub 2009 Aug 21.
Disposal of the vast amounts of tannery waste that are currently generated is a significant problem. Anaerobic treatment of different types of tannery waste (fleshings, skin trimmings and wastewater sludge) was investigated. The biochemical methane potential is the same at 37 degrees C or 55 degrees C and an assay of this was shown to be an appropriate screening tool with which to estimate the susceptibility of a substrate to anaerobic digestion. The start-up procedure of a tannery waste thermophilic anaerobic digestion in 100 days using seed from mesophilic digester processing municipal sludge is presented. The specific methane production potential at 55 degrees C is estimated to be 0.617 m(3)kg(-1) of volatile suspended solids for tannery waste sludge, 0.377 m(3)kg(-1) for tannery waste trimmings and 0.649 m(3)kg(-1) for tannery waste fleshings. Additional concerns such as chromium content, salinity and temperature fluctuations were also addressed. Chromium content and salinity showed no adverse effects; however a reactor temperature reduction of 4.4 degrees C led to a drop in biogas production of 25%, indicating a requirement to keep the temperature constant at 55 degrees C.
处理目前产生的大量制革厂废弃物是一个重大问题。对不同类型的制革厂废弃物（肉屑、皮屑和废水污泥）进行了厌氧处理研究。在37摄氏度或55摄氏度时，生化甲烷潜力相同，并且对其进行的测定表明这是一种合适的筛选工具，可用于估计底物对厌氧消化的敏感性。介绍了使用处理城市污泥的中温消化器的种子，在100天内启动制革厂废弃物高温厌氧消化的过程。对于制革厂废弃物污泥，55摄氏度时的特定甲烷生产潜力估计为0.617立方米每千克挥发性悬浮固体，制革厂废弃物皮屑为0.377立方米每千克，制革厂废弃物肉屑为0.649立方米每千克。还讨论了其他问题，如铬含量、盐度和温度波动。铬含量和盐度未显示出不利影响；然而，反应器温度降低4.4摄氏度导致沼气产量下降25%，这表明需要将温度保持在55摄氏度恒定。
