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

探讨了上流式厌氧床反应器(UASB)处理高硫化物、高氨氮发酵废水的颗粒形成过程和处理特性。结果表明，在处理含硫化物和氨氮废水的过程中可以形成颗粒，不会发生硫化物对废水的抑制作用。实验结果表明，二级接触曝气工艺适合作为UASB废水深度处理工艺，因此认为UASB+二级接触曝气组合工艺是处理高浓度硫化物和氨氮发酵废水的最佳工艺。启动结束后，在TOC负荷为10-12 kg-TOC/m~3/d的条件下，TOC的去除效率为60-70%，脂肪的去除效率为30-50%。污泥床上部颗粒几乎全部由类甲烷丝状细菌组成，下部颗粒呈多层细菌结构。从而初步建立了水产品加工过程中大豆废水脱除TOD和油脂的基本实用工艺。

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.