Volume 4, Issue 3, September 2018, Page: 75-79
Optimization of Anaerobic Granular Sludge by Removing Biogas
Guan Xijun, School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao, China
Xia Lijia, School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao, China
Received: Sep. 25, 2018;       Accepted: Oct. 10, 2018;       Published: Oct. 25, 2018
DOI: 10.11648/j.ajwse.20180403.13      View  440      Downloads  27
The loss of granular sludge and acidification of sludge are common problems in highly efficient anaerobic reactors in operation at present, which results in that the reactors cannot reach the design COD removal rates. The problems must be solved for the widespread use of the highly efficient anaerobic reactors. There are many different studies on the formation and loss of granular sludge in an anaerobic reactor, however, the researchers ignore the effects of the gas-producing and biogas-off process of granular sludge on the formation mechanism of granular sludge. The sedimentation and buoyancy phenomena of the granular sludge cultured by self-made transparent reactor were observed in the lab and their relative velocities were measured by photos. Granular sludge and their biogas are coexistent, that is, any size particles of granular sludge can form high floating speed when granular sludge particles contain a lot of bubbles and the granular sludge particles can precipitate well when the air bubbles of granular sludge particles are released in time. So the water test on the sedimentation rate of granular sludge is insufficient. Unified consideration of granular sludge and biogas is beneficial to solve the loss of granular sludge and acidation of sludge in anaerobic reactors and to ensure the normal operation of anaerobic reactors. The biogas-off of biogas produced by anaerobic sludge has essential effects on the granulation of granular sludge. It is conducive to highly efficient anaerobic reactors and three phase separator to reconstruct.
Biogas, Granular Sludge, Settlability, the Loss of Granular Sludge, Relative Density
To cite this article
Guan Xijun, Xia Lijia, Optimization of Anaerobic Granular Sludge by Removing Biogas, American Journal of Water Science and Engineering. Vol. 4, No. 3, 2018, pp. 75-79. doi: 10.11648/j.ajwse.20180403.13
Copyright © 2018 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Lu Huifeng, Zheng Ping, Ji Qixing, et al. The structure, density and settle ability of anammox granular sludge in high-rate reactors [J]. Bioresource Technology, 2012, 123: 312-317.
Guo Xiao-lei, Hu Yong-you, Gao Kong-rong. Characters and mechanism of formation of anaerobic granular sludge [J]. Water & Wastewater Engineering, 2000(01): 33-38.
Hickey R F, Wu W M, Veiga M C, et al. Start-up, operation, monitoring and control of high-rate anaerobic treatment systems [J]. Water Science and Technology, 1991, 24(8): 207-255.
FANG Xiao, JIANG Zhu-wu, ZHANG Ya-lei, YANG Hai-zhen. A Review of Characteristics and Granulation of Anaerobic Granular Sludge [J]. Jiangsu Environmental Science and Technology, 2005(04):44-46.
Wang peng. Reasons and Control of anaerobic Granular Sludge Floating [J]. Journal of Taiyuan University, 2017, 35(03):45-48.
Xu Fu. Full-scale cultivation of anaerobic granular sludge and its underlying mechanisms [D]. Jiangnan University, 2013.
Guan Xijun. An anaerobic reactor [P]. Shandong: CN107758861A, 2018-03-06.
Muda K, Aris A, Salim M R, et al. Development of granular sludge for textile wastewater treatment [J]. Water Research, 2010. 44(15): 4341-4350.
Dong Chunjuan, Lu Bingnan. Characterisitic reaseach of ananerobic granules [J]. Chinese Journal of Environmental Engineering, 2007(06):102-108.
Bi Lei. Effects of Hydrodynamic Shear Force on Granular Sludge in Upflow Anaerobic Reactor [D]. Tsinghua University, 2007.
Lu Xueqin, Zhen Guangyin, Adriana Ledezma Estrada, et al. Operation performance and granule characterization of upflow anaerobic sludge blanket (UASB) reactor treating wastewater with starch as the sole carbonsource [J]. Bioresource Technology, 2015, (180):264-273.
Wang Liangjie. Experimental Research about Enhancements of Additives on Cultivating Anaerobic Granular Sludge [D]. China University of mining and technology, 2017.
Zhao Binyu. Interfacial Properties of Nanobubbles at the Solid/liquid Interface Studied by Advanced Nano-Imaging [D]. The University of Chinese Academy of Sciences, 2015.
Tay J H, Xu H L, Teo KC. Molecular mechanism of granulation. I: H+ translocation-dehydration theory [J]. Journal of Environmental engineering, 2000, 126(5):403-410.
Wang Jing, Lu Wanxiang. review on the patent technology of Upflow anaerobic sludge blanket (UASB) [J]. Henan science and technology, 2017(11):90-91.
Browse journals by subject