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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

能量回收自粒化自流污泥床的研制

基本信息

批准号：
06558088
负责人：
FUKAGAWA Masayuki
金额：
$ 1.09万
依托单位：
Ube National College of Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for Developmental Scientific Research (B)
财政年份：
1994
资助国家：
日本
起止时间：
1994 至 1995
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-06558088/
关键词：
wastewater teatment aerobic wastewater treatment 2-stage contact aeration process anaerobic wastewater treatment UASB non-biodegradable organics granulation sludge high sulfide and high organic wastewater

项目摘要

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.

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。启动后，在TOC负荷为10- 12 kg-TOC/m3/d的条件下，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。