Developmental Research of High-Performance UASB Process by Using Interal-Circulation and Two-Stage Structure

内循环两级结构高性能UASB工艺开发研究

• 批准号: 06555161
• 负责人: NOIKE Tatsuya
• 金额: $ 5.7万
• 依托单位: Tohoku University
• 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-06555161/
• 关键词: Anaerobic treatment; UASB process; Two-stage; Loading capacity; COD removal; Granule; Microbial structure; Industral wastwater; UASBプロセス; COD負荷; 効率化

The objective of this study is to develop a high-performance UASB process by using interal-circulation and two-stage structure. For this perpose, both the laboratory-and full-scale investigation were conducted using various wastewaters at mesophilic condition (35ﾟC). Based on the results, the following conclusions can be made :1)Although the treatment porformance of the UASB process was affected by the chemical nature of the influent wastewater, The maximum COD loading rate for treating all substrate was over 25 g/L/day for meantaining a high COD removal of 95%.2)The microstructure of anaerobic biogranules treating a wide wariety of wastwaters was investigated using light and electron micrsocopies. Results indicated that the microstructure of the UASB granules was strongly dependent on the degradation kinetics of substrates. Both the acetoclastic Methanothrix and syntrophic microcolony were found as the two key structural elements in the granules. This seems to suggest that they likely play an important role in sludge granulation.3)A comparative study on the treatment performance of anaerobic hybred reactorwas conducted by using glutamate wastewater as a substrate. The maximum capacity of COD loading rate of the anaerobic hybrid reactor process was 12.0 g/L/day which is 1.5 times of that of the anaerobic filter process.4)With two-phase anaerobic digestion process, sulfate in wastewater could be effectively removaed in acidogenic phase. In paiticular, sulfate removal efficiency reached to 46% at COD/S ratio of 13 and to 98% at COD/S ratio of 50 when HRT was loger than 6 hours.

本研究旨在开发一种采用内循环两级结构的高效UASB工艺。为此，在中温条件下（35 ℃），使用各种废水进行了实验室和生产规模的研究。结果表明：1）UASB工艺的处理效能受进水化学性质的影响，但处理所有基质的最大COD负荷均超过25 g/L/d，COD去除率可达95%以上。2）利用光镜和电镜研究了UASB工艺处理各种废水时厌氧颗粒的微观结构。结果表明，颗粒污泥的微观结构强烈依赖于基质的降解动力学。乙酸裂解甲烷丝菌和互养小菌落被认为是颗粒中的两个关键结构元素。以味精废水为底物，对厌氧复合反应器的处理性能进行了对比研究。厌氧复合反应器工艺的最大COD负荷为12.0 g/L/d，是厌氧滤池工艺的1.5倍。4）两相厌氧消化工艺在产酸相能有效去除废水中的硫酸盐。当水力停留时间大于6 h时，COD/S = 13时，硫酸盐的去除率可达46%，COD/S = 50时，硫酸盐的去除率可达98%。

项目成果

Zheng-Huan Shen, Xiao-Jian Zhou, Yu-You Li and Tatsuya Noike: "A comparative study on the performance of anaerobic filter and anaerobic, hybrid reactor in treating glutamate wastewater" Journal of Japan Socity on Water Environment. Vol.17, No.2. 99-108 (1

沉正焕、周晓建、李玉友、野池达也：“厌氧过滤器与厌氧混合反应器处理谷氨酸废水性能的比较研究”日本水环境学会杂志。

T. Aoi, Y. Y. Li: "Progress of anaerobic Processes in treating industry Wastewater in Japan" Proceedings of ENSEARCH-JAWE Post-Conference Seminar on industrial Wastewater Management. 1. 61-70 (1995)

T. Aoi，Y. Y. Li：“日本工业废水处理厌氧工艺的进展”工业废水管理 ENSEARCH-JAWE 会后研讨会论文集。

水野 修,李 玉友 野池達也: "スクロースの酸発酵に及ぼす硫酸塩還元の影響" 水環境学会誌. 18. 894-900 (1995)

Osamu Mizuno、Yuyou Li、Tatsuya Noike：“硫酸盐还原对蔗糖酸发酵的影响”日本水环境学会杂志 18. 894-900 (1995)。

Y. Y. Li et al: "UASB treatment of wastwater containing concentrated benzoate" Journal of Environmental Engineering,ASCE. 121. 748-751 (1995)

Y. Y. Li等：“UASB处理含有浓缩苯甲酸盐的废水”，美国土木工程师协会环境工程杂志。

T.Miyahara, M.Takano and T.Noike: "Role of Filter media in an anaerobic fixed-bed reactor" Water Science and Technology. Vol.31, No.9. 134-144 (1995)

T.Miyahara、M.Takano 和 T.Noike：“过滤介质在厌氧固定床反应器中的作用”水科学与技术。