A Study on Organics and Nutrients Removal Mechanisms in Livestock Wastewater Treatment Using EGSB


Article Preview

An advanced way of treating livestock wastewater made use of both Autothermal Thermophilic Aerobic Digestion (ATAD), as a pre-step, and Expanded Granular Sludge Blanket (EGSB), as the post-step. As a result, the chemical oxygen demand (COD) concentration flowing out of the post step, including the EGSB, was 89mg/ℓ, while the suspended solid (SS) concentration was 28mg/ℓ, and the total nitrogen (TN) and total phosphorus (TP) concentrations were 62mg/ℓ and 5.7mg/ℓ, respectively. To maintain a high temperature in the ATAD reactor without external heating, the characteristics of influent were found to be very critical. The temperature of the ATAD reactor was significantly elevated only when the influent TSS was more 50,000mg/ℓ. The EGSB reactor was fed with increasingly higher livestock wastewater loading rates up to 6kg chemical oxygen demand (COD)/ m3/day and an average of 84.7% of the COD and 85.4% of the SS were removed in EGSB. Biogas was generated on the 47th day of operation in the EGSB after startup and its production increased at a rapid rate. The methane percentage within the biogas was initially low but it also increased rapidly, up to 73%. When the HRTs were 0.5-3 days, the COD removal efficiency was over 80%, but did show a increase as the HRT increased to 3 days.



Key Engineering Materials (Volumes 277-279)

Edited by:

Kwang Hwa Chung, Yong Hyeon Shin, Sue-Nie Park, Hyun Sook Cho, Soon-Ae Yoo, Byung Joo Min, Hyo-Suk Lim and Kyung Hwa Yoo




Y. S. Lee, "A Study on Organics and Nutrients Removal Mechanisms in Livestock Wastewater Treatment Using EGSB ", Key Engineering Materials, Vols. 277-279, pp. 462-469, 2005

Online since:

January 2005





[1] Andy de Smul, et al, Effect of COD to Sulphate Ratio and Temperature in ExpendedGranular-Sludge-Blanket Reactors for Sulphate Reduction. ( Process Biochemistry, 1999).

DOI: https://doi.org/10.1016/s0032-9592(98)00109-5

[2] Delia Teresa Sponza, Enhancement of Granule Formation and Sludge Retainment for Tetrachloroethylene Removal in an Upflow Anaerobic Sludge Blanket Reactor. (Advances in Environmental Research, 2003).

DOI: https://doi.org/10.1016/s1093-0191(02)00012-6

[3] Fang G.G. P, et al, Performance and Granule Characteristics of UASB Process Treating Wastewater With Hydrolyzed Proteins. (Water Sci. Technol, 1994).

[4] Jewell, W.J., Kabrick, R.M., Autoheated Aerobic Thermophilic Digestion with Aeration.: Jour. WPCF Vol. 3 (1980), p.53.

[5] Kim C.W., et al, Optimization of Operating Mode For Sequencing Batch Reactor (SBR) Treating Piggery Wastwater with High Nitrogen. (IWA Int. Syposium, 2002).

[6] Lee, Y.S., Shin, H.J., Study on Autoheated Aerobic Digestion of Waste Sludge.: Jour. KSEE, Vol. 3 (1988), p.10.

[7] Lettinga, G., et al, Upflow Sludge Blanket Process. (Proc. 3th Int'l Symp. on Anaerobic Digstion, 1983).

[8] Lucas Seghezzo, et al, A Review: The Anaerobic Treatment of Sewage in UASB and EGSB Reactors. (Bioresource Technology, 1998).

DOI: https://doi.org/10.1016/s0960-8524(98)00046-7

[9] Matsch, L.C., Drnevich, R.F., Autothermal Aerobic Digestion.: Jour. WPCF Vol. 2, (1977), p.42.

[10] Maria Alcina Pereira, et al, Molecular Monitoring of Microbial Diversity in Expended Granular Sludge Bed(EGSB) Reactors Treating Oleic Acid, (FEMS Microbiology Ecology, 2002). Title of Publication (to be inserted by the publisher).

DOI: https://doi.org/10.1016/s0168-6496(02)00267-2

[11] Pereira M. A., et al, Operation of an Anaerobic Filter and an EGSB Reactor for the treatment of an Oleic Acid-based Effluent: Influence of Inoculum quality. (Process Biochemistry, 2002).

DOI: https://doi.org/10.1016/s0032-9592(01)00311-9

[12] Sang hong chon, et al, Dominant Growth of Bacillus spp. in the Aerobic Night Soil Digestion Tanks and Their Biochemical Characteristics.: Jour. Water Evrionmental Vol. 18 (1995).

[13] Timothy et al., Thermophilic Aerobic Biological Wastewater Treatment. (Wat. Res., 1999).

[14] Yan Y.G., et al, Characterisation of the Granulation Process during UASB Start-up. (Water Res., 1997).