Advanced Water Management Centre, The University of Queensland St Lucia, Brisbane, Australia.
Water Sci Technol. 2011;64(8):1614-9. doi: 10.2166/wst.2011.733.
The impact of brewery wastewater discharge on sulfide and methane production in a sewer was assessed. Experiments were carried out on laboratory scale sewer reactors consisting of both an experimental and a control reactor. The control reactor was intermittently fed with real fresh sewage while the experimental reactor was fed with a mixture of brewery and domestic wastewater at two different proportions (10 and 25% v/v). 10% v/v discharge of brewery wastewater increased the H2S and CH4 production rates in the sewer reactor by 40% and 30%, respectively. When the brewery wastewater fraction was increased to 25% v/v, the H2S production rate of the experimental reactor decreased to the level of the control reactor. In contrast, the CH4 production rate maintained at a level that was 30% higher than that in the control reactor. These results indicate that the discharge of brewery wastewater into sewers can give negative impacts in relation to odour and corrosion management of the systems and will increase the greenhouse gas emissions from sewers. The study also reveals that the impact of trade waste on the biological reactions in sewers is complex, and requires careful experimental assessment in each case.
评估了啤酒厂废水排放对下水道中硫化物和甲烷生成的影响。实验在实验室规模的下水道反应器上进行，包括一个实验反应器和一个对照反应器。对照反应器间歇性地用实际新鲜污水进料，而实验反应器则以两种不同比例（10%和 25%v/v）的啤酒厂和家庭废水混合物进料。10%v/v 的啤酒厂废水排放将下水道反应器中的 H2S 和 CH4 生成速率分别提高了 40%和 30%。当啤酒厂废水分数增加到 25%v/v 时，实验反应器的 H2S 生成速率降至对照反应器的水平。相比之下，CH4 生成速率保持在比对照反应器高 30%的水平。这些结果表明，啤酒厂废水排入下水道会对系统的气味和腐蚀管理产生负面影响，并会增加下水道的温室气体排放。该研究还表明，贸易废水对下水道中生物反应的影响是复杂的，需要在每种情况下进行仔细的实验评估。
