Significant increase of assimilable organic carbon (AOC) levels in MBR effluents followed by coagulation, ozonation and combined treatments: Implications for biostability control of reclaimed water

Highlights

• Annual AOCs in MBR effluents were stable with small increase in warmer seasons.

• Significant increase in AOC levels of tertiary effluents were observed.

• Coagulation in prior to ozonation can reduce AOC formation in tertiary treatment.

• ∆UV₂₅₄ and SUVA can be surrogates to predict the AOC changes during ozonation.

Abstract

As water reuse development has increased, biological stability issues associated with reclaimed water have gained attention. This study evaluated assimilable organic carbon (AOC) in effluents from a full-scale membrane biological reactor (MBR) plant and found that they were generally stable over one year (125–216 µg/L), with slight increases in warmer seasons. After additional tertiary treatments, the largest increases in absolute and specific AOCs were detected during ozonation, followed by coagulation-ozonation and coagulation. Moreover, UV₂₅₄ absorbance is known to be an effective surrogate to predict the AOC changes during ozonation. Applying coagulation prior to ozonation of MBR effluents for removal of large molecules was found to reduce the AOC formation compared with ozonation treatment alone. Finally, the results revealed that attention should be paid to seasonal variations in influent and organic fraction changes during treatment to enable sustainable water reuse.

Graphical abstract

Keywords

Assimilable organic carbon (AOC) / MBR effluents / Tertiary treatments / Coagulation / Ozonation

References

[1] Abass O K, Wu X, Guo Y, Zhang K (2015). Membrane bioreactor in China: A critical review. International Journal of Membrane Science and Technology (2), 29–47

[2] APHA, W (2005). AWWA, Standard methods for the examination of water and wastewater. APHA WEF AWWA

[3] Arévalo J, Ruiz L M, Parada-Albarracín J A, González-Pérez D M, Pérez Z, Moreno B, Gómez M A (2012). Wastewater reuse after treatment by MBR. Microfiltration or ultrafiltration? Desalination, 299: 22–27

[4] Asano T, Burton F L, Leverenz H L, Tsuchihashi R, Tchobanoglous G (2007). Water reuse–issues, technologies and applications. New York: McGraw Hill

[5] Blackbeard J, Lloyd J, Magyar M, Mieog J, Linden K G, Lester Y (2016). Demonstrating organic contaminant removal in an ozone-based water reuse process at full scale. Environmental Science. Water Research & Technology, 2(1): 213–222

[6] Chen Z, Wang D, Sun M, Hao Ngo H, Guo W, Wu G, Jia W, Shi L, Wu Q, Guo F, Hu H Y. (2018a). Sustainability evaluation and implication of a large scale membrane bioreactor plant. Bioresource Technology, 269: 246–254

[7] Chen Z, Yu T, Ngo H H, Lu Y, Li G, Wu Q, Li K, Bai Y, Liu S, Hu H Y (2018b). Assimilable organic carbon (AOC) variation in reclaimed water: Insight on biological stability evaluation and control for sustainable water reuse. Bioresource Technology, 254: 290–299

[8] Dickenson E R V, Drewes J E, Sedlak D L, Wert E C, Snyder S A (2009). Applying surrogates and indicators to assess removal efficiency of trace organic chemicals during chemical oxidation of wastewaters. Environmental Science & Technology, 43(16): 6242–6247

[9] Drewes J E, Snyder S, Dickenson E (2010). Developing of surrogates to determine the efficiency of groundwater recharge systems to remove trace organic chemicals. WateReuse Research Foundation, Alexandria, USA

[10] Escobar I C, Randall A A (2001). Assimilable organic carbon (AOC) and biodegradable dissolved organic carbon (BDOC). Water Research, 35(18): 4444–4454

[11] Fleming L E, Rivero C, Burns J, Williams C, Bean J A, Shea K A, Stinn J (2002). Blue green algal (cyanobacterial) toxins, surface drinking water, and liver cancer in Florida. Harmful Algae, 1(2): 157–168

[12] Global Water Intelligence (GWI) (2017). Desalination and water reuse. Media Analytics Ltd., Oxford, UK

[13] Gong J L, Liu Y D, Sun X B (2008). O₃ and UV/O₃ oxidation of organic constituents of biotreated municipal wastewater. Water Research, 42(4–5): 1238–1244

[14] Hammes F, Salhi E, Koster O, Kaiser H P, Egli T, von Gunten U (2006). Mechanistic and kinetic evaluation of organic disinfection by-product and assimilable organic carbon (AOC) formation during the ozonation of drinking water. Water Research, 40(12): 2275–2286

[15] Hu H Y, Du Y, Wu Q Y, Zhao X, Tang X, Chen Z (2016). Differences in dissolved organic matter between reclaimed water source and drinking water source. Science of the Total Environment, 551–552: 133–142

[16] Jjemba P K, Weinrich L A, Cheng W, Giraldo E, LeChevallier M W (2010). Regrowth of potential opportunistic pathogens and algae in reclaimed-water distribution systems. Applied and Environmental Microbiology, 76(13): 4169–4178

[17] Kooij, DV(1992). Assimilable organic carbon as an indicator of bacterial regrowth.  Journal‐American Water Works Association, 84(2): 57–65

[18] Krzeminski P, Leverette L, Malamis S, Katsou E (2017). Membrane bioreactors–A review on recent developments in energy reduction, fouling control, novel configurations, LCA and market prospects. Journal of Membrane Science, 527: 207–227

[19] Lang E, Burghartz M, Spring S, SwiderskiJ, Spröer C (2010).Pseudomonas benzenivorans sp. nov. and Pseudomonas saponiphila sp. nov., represented by xenobiotics degrading type strains. Current microbiology,60(2): 85–91

[20] Langer M, Väänänen J, Boulestreau M, Miehe U, Bourdon C, Lesjean B (2017). Advanced phosphorus removal via coagulation, flocculation and microsieve filtration in tertiary treatment. Water Science and Technology, 75(12): 2875–2882

[21] Lazarova V, Asano T, Bahri A, Anderson J (2013). Milestones in water reuse: the best success stories. IWA Publishing

[22] LeChevallier M W, Shaw N E, Kaplan L A, Bott T L (1993). Development of a rapid assimilable organic carbon method for water. Applied and Environmental Microbiology, 59(5): 1526–1531

[23] LeChevallier M W, Welch N J, Smith D B (1996). Full-scale studies of factors related to coliform regrowth in drinking water. Applied and Environmental Microbiology, 62(7): 2201–2211

[24] Li G Q, Yu T, Wu Q Y, Lu Y, Hu H Y (2017). Development of an ATP luminescence-based method for assimilable organic carbon determination in reclaimed water. Water Research, 123: 345–352

[25] Li P, Liu L, Wu J, Cheng R, Shi L, Zheng X, Zhang Z (2019). Identify driving forces of MBR applications in China. Science of the Total Environment, 647: 627–638

[26] Lou J C, Chen B H, Chang T W, Yang H W, Han J Y (2011). Variation and removal efficiency of assimilable organic carbon (AOC) in an advanced water treatment system. Environmental Monitoring and Assessment, 178(1–4): 73–83

[27] Mathon B, Coquery M, Miege C, Penru Y, Choubert J M (2017). Removal efficiencies and kinetic rate constants of xenobiotics by ozonation in tertiary treatment. Water Science and Technology, 75(12): 2737–2746

[28] Matilainen A, Gjessing E, Lahtinen T, Hed L, Bhatnagar A, Sillanpää M (2011). An overview of the methods used in the characterisation of natural organicmatter (NOM) in relation to drinking water treatment. Chemosphere, 83(11): 1431–1442

[29] Matilainen A, Vepsäläinen M, Sillanpää M (2010). Natural organic matter removal by coagulation during drinking water treatment: A review. Advances in Colloid and Interface Science, 159(2): 189–197

[30] Michael-Kordatou I, Michael C, Duan X, He X, Dionysiou D, Mills M, Fatta-Kassinos D (2015). Dissolved effluent organicmatter: Characteristics and potential implications inwastewater treatment and reuse applications. Water Research, 77: 213–248

[31] Narasimhan R, Brereton J, Abbaszadegan M, Ryu H, Butterfield P, Thompson K, Werth H (2005). Characterizing Microbial Water Quality in Reclaimed Water Distribution Systems. AWWA Research Foundation

[32] Ohkouchi Y, Ly B T, Ishikawa S, Aoki Y, Echigo S, Itoh S (2011). A survey on levels and seasonal changes of assimilable organic carbon (AOC) and its precursors in drinking water. Environmental Technology, 32(14): 1605–1613

[33] Page D, Dillon P (2007). Measurement of the biodegradable fraction of dissolved organic matter relevant to water reclamation via aquifers. Water for a Healthy Country National Research Flagship Report, CSIRO.

[34] Pharand L, Van Dyke M I, Anderson W B, Yohannes Y, Huck P M (2015). Full-scale ozone-biofiltration: Seasonally related effects on NOM removal. American Water Works Association, 107(8): E425–E435

[35] Prest E I, Hammes F, van Loosdrecht M C M, Vrouwenvelder J S (2016). Biological stability of drinking water: Controlling factors, methods, and challenges. Frontiers in Microbiology, 7: 1–24

[36] Qu J H, Wang H C, Wang K J, Yu G, Ke B, Yu H Q, Ren H Q, Zheng X C, Li J, Li W W, Gao S, Gong H (2019). Municipal wastewater treatment in China: Development history and future perspectives. Frontiers of Environmental Science & Engineering, 13(6): 88

[37] Radcliffe J C, Page D (2020). Water reuse and recycling in Australia-history, current situation and future perspectives. Water Cycle, 1: 19–40

[38] Ramseier M K, Peter A, Traber J, Von Gunten U (2011). Formation of assimilable organic carbon during oxidation of natural waters with ozone, chlorine dioxide, chlorine, permanganate, and ferrate. Water Research, 45(5): 2002–2010

[39] Rebelo A, Quadrado M, Franco A, Lacasta N, Machado P (2020). Water reuse in Portugal: New legislation trends to support the definition of water quality standards based on risk characterization. Water Cycle, 1: 41–53

[40] Rock C, Gerba C P, Pepper I L (2015). Chapter 27–Recycled Water Treatment and Reuse. In: Environmental Microbiology, 3rd Ed. New York: Academic Press

[41] Ryu H, Alum A, Abbaszadegan M (2005). Microbial characterization and population changes in nonpotable reclaimed water distribution systems. Environmental Science & Technology, 39(22): 8600–8605

[42] Siddiqui M S, Amy G L, Murphy B D (1997). Ozone enhanced removal of natural organic matter from drinking water sources. Water Research, 31(12): 3098–3106

[43] Sillanpää M, Ncibi M C, Matilainen A, Vepsäläinen M (2018). Removal of natural organic matter in drinking water treatment by coagulation: A comprehensive review. Chemosphere, 190: 54–71

[44] Sinharoy S S, Caruso B A (2019). On World Water Day, gender equality and empowerment require attention. Lancet. Planetary Health, 3(5): e202–e203

[45] Tang H, Xiao F, Wang D (2015). Speciation, stability, and coagulation mechanisms of hydroxyl aluminum clusters formed by PACl and alum: A critical review. Advances in Colloid and Interface Science, 226: 78–85

[46] Thayanukul P, Kurisu F, Kasuga I, Furumai H (2013). Evaluation of microbial regrowth potential by assimilable organic carbon in various reclaimed water and distribution systems. Water Research, 47(1): 225–232

[47] UNDESA (United Nations Department of Economic and Social Affairs) (2015). World Urbanization Prospects: The 2014 Revision, Highlights. (ST/ESA/SER.A/352). United Nations Department of Economic and Social Affairs

[48] Wang D, Guo F, Wu Y, Li Z, Wu G (2018). Technical, economic and environmental assessment of coagulation/filtration tertiary treatment processes in full-scale wastewater treatment plants. Journal of Cleaner Production, 170: 1185–1194

[49] Wang M, Chen Y (2018). Generation and characterization of DOM in wastewater treatment processes. Chemosphere, 201: 96–109

[50] Weinrich L A, Jjemba P K, Giraldo E, LeChevallier M W (2010). Implications of organic carbon in the deterioration of water quality in reclaimed water distribution systems. Water Research, 44(18): 5367–5375

[51] Wert E C, Rosario-Ortiz F L, Snyder S A (2009). Using Ultraviolet Absorbance and Color To Assess Pharmaceutical Oxidation during Ozonation of Wastewater. Environmental Science & Technology, 43(13): 4858–4863

[52] Yang B M, Liu J K, Chien C C, Surampalli R Y, Kao C M (2011). Variations in AOC and microbial diversity in an advanced water treatment plant. Journal of Hydrology, 409(1–2): 225–235

[53] Yu T, Li G, Lin W, Hu H Y, Lu Y (2017). Coagulation increased the growth potential of various species bacteria of the effluent of a MBR for the treatment of domestic wastewater. Environmental Science and Pollution Research International, 24(6): 5126–5133

[54] Zhang J, Li W Y, Wang F, Qian L, Xu C, Liu Y, Qi W (2016). Exploring the biological stability situation of a full scale water distribution system in south China by three biological stability evaluation methods. Chemosphere, 161: 43–52

[55] Zhao X, Hu H Y, Liu S M, Jiang F, Shi X L, Li M T, Xu X Q (2013). Improvement of the assimilable organic carbon (AOC) analytical method for reclaimed water. Frontiers of Environmental Science & Engineering, 7(4): 483–491

[56] Zhao X, Hu H Y, Yu T, Su C, Jiang H, Liu S (2014b). Effect of different molecular weight organic components on the increase of microbial growth potential of secondary effluent by ozonation. Journal of Environmental Sciences (China), 26(11): 2190–2197

[57] Zhao X, Huang H, Hu H Y, Su C, Zhao J, Liu S M (2014a). Increase of microbial growth potential in municipal secondary effluent by coagulation. Chemosphere, 109: 14–19

[58] Zhong X, Cui C, Yu S (2017). Exploring the pathways of aromatic carboxylic acids in ozone solutions. RSC Advances, 7(55): 34339–34347

[59] Zhu Z, Dou J (2018). Current status of reclaimed water in China: An overview. Journal of Water Reuse and Desalination, 8(3): 293–307

Acknowledgements

This work was supported by the Key Program of the National Natural Science Foundation of China (No. 51738005) and the Youth Program of National Natural Science Foundation of China (No. 51908317).

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