uasb+cass处理啤酒废水的设计.docVIP

某啤酒废水处理工艺设计 摘 要 啤酒是世界通用性饮料，是酒精含量最低的饮料酒，而且营养丰富。生产啤酒产生的废水，主要含有淀粉、蛋白质、酵母菌残体、酒花残渣、残余啤酒、少量酒精及洗涤用碱，有机物浓度较高，虽然无毒，但易于腐败，排入水体要消耗大量的溶解氧，对水体环境造成严重危害。随着啤酒行业的迅速发展，啤酒生产产生的大量废水迫切需要适当的处理，以免对环境造成更恶劣的影响。目前，啤酒废水处理的方法多种多样，由于啤酒废水具有良好的可生化性，常常采用以生化为主，生化与物化相结合的处理工艺。 本设计处理啤酒废水采用的UASB+CASS法，是一种厌氧消化和好氧处理相结合的工艺。厌氧处理能有效处理高浓度有机废水，不但运转费用相对较便宜，且可回收沼气；能耗低，产泥量少。后接的好氧处理，能弥补厌氧处理的不足，能有效去除氮、磷，保证出水水质达标排放。经过设计计算，本工艺COD去除率达到98.8%，BOD去除率高达99%，处理效果显著，出水达到《污水综合排放标准》GB8978-1996一级标准，且回收了大量沼气，创造了一定的经济效益。 关键词：UASB，CASS，啤酒废水，有机废水Beer is the international beverage, is the lowest alcohol content alcohol drinks, with abundant of nutritious. Wastewater generated by production of beer, contains mostly starch, protein, yeast residue, hop residue, residual beer, a small amount of alcohol and washing with alkali, organic matter concentration was higher, although non-toxic, but easy to corruption, into the water body to consume a large amount DO, on the aquatic environment causing serious harm. With the rapid development of the beer industry, beer production of large quantities of waste properly addressed urgently needed to avoid the impact of the environment even worse. Currently, a wide variety of beer waste water treatment methods, because good beer wastewater biodegradability, often dominated by biochemical, biological and physicochemical treatment processes combined. The design treatment of brewery wastewater using the UASB + CASS method, is an anaerobic and aerobic digestion process of combining. Anaerobic treatment can effectively deal with high concentration organic wastewater, not only operating costs are relatively cheap, and recyclable methane; energy consumption is low, producing less sludge. Followed by aerobic treatment, anaerobic treatment can compensate for the deficiency, can effectively remove nitrogen, phosphorus, and ensure the quality of the effluent discharge standards. By design calculations, this process COD removal rate 98.8%, BOD removal rate of up to 99%, a significant treatment effect, the wate