エネルギー回収型自己造粒・自己流動スラッジブランケットの開発

研究了UASB反应器处理高硫高氨发酵废水中颗粒污泥的形成过程及处理特性。结果表明，该颗粒污泥在处理含硫、氨废水的过程中可以得到良好的发展，且不会发生硫化物的抑制作用。试验结果表明，UASB工艺处理难降解废水具有较好的稳定性，两级接触曝气工艺是UASB出水的适宜深度处理工艺，因此，认为UASB与2-阶段接触曝气是处理高含硫高氨氮发酵废水的最佳工艺，以高浓度酱油废水为研究对象，探讨了UASB反应器的启动条件及细菌结构分析。启动结束后，在10- 12 kg-TOC/m3/天的TOC负荷率下，TOC去除率为60-70%，油脂去除率为30-50%。污泥床上部的颗粒几乎全部由类甲烷杆菌组成，而下部的颗粒则呈现多层细菌结构。从而为水产品加工酱油废水的COD和油脂去除奠定了基础和实用的工艺路线。

In this study, the formation process of granule and treatment characteristics were discussed in an Upflow Anaerobic Blanket Reactor (UASB) treating a fermentation process wastewater consisting of high sulfide and ammonia. The results indicated that the granules could be developed in the process for treating sulfide- and anmmonia-rich wastewater, and inhibition caused by sulfide was not occured. Therfore, the UASB process was shown a better stability for treating the refractory wastwater.the experimental results indicated that 2-stage contact aeration process was suitable process as advanced wastewater treatment of treaed wastewater from UASB.Therefore, it was thought that the combination process of UASB and 2-stage contact aeration was optimum process of treating treating a fermentation process wastewater consisting of high sulfide and ammonia.The start-up of UASB reactor and analyzes of bacterial structures were discussed by using high concentration soy wastewater from fish food process. When start-up was finished, 60-70% TOC removal efficiency, and 30-50% lipid removal efficiency were obtained under the TOC loading rate of 10-12kg-TOC/m3/day. Almost all of the granules in the upper part of sludge bed consisted of Methanothrix-like bacteria while the granules in the lower part presented multi-layr bacterial structllres. Consequently, The basicand practical process for TOD and lipid removal from soy wastewater from fish food process was thought to be established.