References

  1. M.A. Barakat, New trends in removing heavy metals from industrial wastewater, Arab. J. Chem., 4 (2011) 361–377.
  2. K.B. Chipasa, Accumulation and fate of selected heavy metals in a biological wastewater treatment system, Waste Manage., 23 (2003) 135–143.
  3. L. Ramrakhiani, S. Ghosh, S. Sarkar, S. Majumdar, Heavy metal biosorption in multi component system on dried activated sludge: investigation of adsorption mechanism by surface characterization, Mater. Today Proc., 3 (2016) 3538–3552.
  4. S. Chowdhury, M.A.J. Mazumder, O. Al-Attas, T. Husain, Heavy metals in drinking water: occurrences, implications, and future needs in developing countries, Sci. Total Environ., 569–570 (2016) 476–488.
  5. F.J. Charters, T.A. Cochrane, A.D. O’Sullivan, Untreated runoff quality from roof and road surfaces in a low intensity rainfall climate, Sci. Total Environ., 550 (2016) 265–272.
  6. Y. Jiang, S. Chao, J. Liu, Y. Yang, Y. Chen, Source apportionment and health risk assessment of heavy metals in soil for a township in Jiangsu Province, China, Chemosphere, 168 (2016) 1658–1668.
  7. J. Geng, Y. Wang, H. Luo, Distribution, sources, and fluxes of heavy metals in the Pearl River Delta, South China, Mar. Pollut. Bull., 101 (2015) 914–921.
  8. E. Hendozko, P. Szefer, J. Warzocha, Heavy metals in Macoma balthica and extractable metals in sediments from the southern Baltic Sea, Ecotoxicol. Environ. Saf., 73 (2010) 152–163.
  9. A. Cherfi, M. Achour, M. Cherfi, S. Otmani, A. Morsli, Health risk assessment of heavy metals through consumption of vegetables irrigated with reclaimed urban wastewater in Algeria, Process Saf. Environ. Prot., 98 (2015) 245–252.
  10. O.E. Abdel Salam, N.A. Reiad, M.M. ElShafei, A study of the removal characteristics of heavy metals from wastewater by low-cost adsorbents, J. Adv. Res., 2 (2011) 297–303.
  11. E. Kulbat, K. Olańczuk-Neyman, B. Quant, M. Geneja, E. Haustein, Heavy metals removal in the mechanicalbiological wastewater treatment plant “Wschód” in Gdańsk, Pol. J. Environ. Stud., 12 (2003) 635–641.
  12. H. Ullah, S. Noreen, Fozia, A. Rehman, A. Waseem, S. Zubair, M. Adnan, I. Ahmad, Comparative study of heavy metals content in cosmetic products of different countries marketed in Khyber Pakhtunkhwa, Pakistan, Arab. J. Chem., 10 (2013) 10–18.
  13. T. Wang, Y. Xue, M. Zhou, Y. Yuan, S. Zhao, G. Tan, X. Zhou, J. Geng, S. Wu, H. Hou, Comparative study on the mobility and speciation of heavy metals in ashes from co-combustion of sewage sludge/dredged sludge and rice husk, Chemosphere, 169 (2017) 162–170.
  14. Regulation No 99 of 29.11.2012 by the Government of the Republic of Estonia, Requirements for Wastewater Treatment and Discharging Effluent and Storm Water into a Recipient, Limits of Pollution Indicators for Effluent and Storm Water, and the Measures to be Taken to Verify that the Requirements are Met, RT I, 16.12.2016, 6., n.d. Available at: https://www.riigiteataja.ee/akt/116122016006 (accessed February 10, 2017).
  15. S.A. Al-Saydeh, M.H. El-Naas, S.J. Zaidi, Copper removal from industrial wastewater: a comprehensive review, J. Ind. Eng. Chem., 56 (2017) 35–44.
  16. M. Bilal, J.A. Shah, T. Ashfaq, S.M.H. Gardazi, A.A. Tahir, A. Pervez, H. Haroon, Q. Mahmood, Waste biomass adsorbents for copper removal from industrial wastewater – a review, J. Hazard. Mater., 263 (2013) 322–333.
  17. P.A. Kobielska, A.J. Howarth, O.K. Farha, S. Nayak, Metal–organic frameworks for heavy metal removal from water, Coord. Chem. Rev., 358 (2018) 92–107.
  18. G. Gulyás, V. Pitás, B. Fazekas, Á. Kárpáti, Heavy metal balance in a communal wastewater treatment plant, Hung. J. Ind. Chem., 43 (2015) 1–6.
  19. M. Praspaliauskas, N. Pedišius, A review of sludge characteristics in Lithuania’s wastewater treatment plants and perspectives of its usage in thermal processes, Renewable Sustainable Energy Rev., 67 (2017) 899–907.
  20. Y. Ma, P. Egodawatta, J. McGree, A. Liu, A. Goonetilleke, Human health risk assessment of heavy metals in urban stormwater, Sci. Total Environ., 557–558 (2016) 764–772.
  21. S.L. Luo, L. Yuan, L.Y. Chai, X.B. Min, Y.Y. Wang, Y. Fang, P. Wang, Biosorption behaviors of Cu2+, Zn2+, Cd2+ and mixture by waste activated sludge, Trans. Nonferrous Met. Soc. China, 16 (2006) 1431–1435.
  22. J. Huang, F. Yuan, G. Zeng, X. Li, Y. Gu, L. Shi, W. Liu, Y. Shi, Influence of pH on heavy metal speciation and removal from wastewater using micellar enhanced ultrafiltration, Chemosphere, 173 (2016) 199–206.
  23. S.R. Dhokpande, J.P. Kaware, Biological methods for heavy metal removal – a review, Int. J. Eng. Sci. Innovative Technol., 2 (2013) 304–309.
  24. D.C. Montgomery, G.C. Runger, Applied Statistics and Probability for Engineers, John Wiley & Sons, New York, 2003.
  25. S. Malamis, E. Katsou, K. Takopoulos, P. Demetriou, M. Loizidou, Assessment of metal removal, biomass activity and RO concentrate treatment in an MBR-RO system, J. Hazard. Mater., 209–210 (2012) 1–8.
  26. P. Madoni, D. Davoli, L. Guglielmi, Response of sOUR and AUR to heavy metal contamination in activated sludge, Water Res., 33 (1999) 2459–2464.
  27. B. Feng, Z. Fang, J. Hou, X. Ma, Y. Huang, L. Huang, Effects of heavy metal wastewater on the anoxic/aerobic-membrane bioreactor bioprocess and membrane fouling, Bioresour. Technol., 142 (2013) 32–38.
  28. S.J. You, Y.P. Tsai, R.Y. Huang, Effect of heavy metals on nitrification performance in different activated sludge processes, J. Hazard. Mater., 165 (2009) 987–994.
  29. S.R. Juliastuti, J. Baeyens, C. Creemers, D. Bixio, E. Lodewyckx, The inhibitory effects of heavy metals and organic compounds on the net maximum specific growth rate of the autotrophic biomass in activated sludge, J. Hazard. Mater., 100 (2003) 271–283.
  30. T.A. Özbelge, H.Ö. Özbelge, M. Tursun, Effects of hydraulic residence time on metal uptake by activated sludge, Chem. Eng. Process. Process Intensif., 44 (2005) 23–32.
  31. S.A. Ong, E. Toorisaka, M. Hirata, T. Hano, Adsorption and toxicity of heavy metals on activated sludge, ScienceAsia, 36 (2010) 204–209.
  32. S.R. Dhokpande, K. Jayant, K. Sunil, Activated sludge for heavy metal removal, Int. J. Res. Appl. Sci. Eng. Technol., 2 (2014) 254–259.
  33. A. Hammaini, F. González, A. Ballester, M.L. Blázquez, J.A. Muñoz, Biosorption of heavy metals by activated sludge and their desorption characteristics, J. Environ. Manage., 84 (2007) 419–426.
  34. H. Wu, A. Zhang, L. Wang, Immobilization study of biosorption of heavy metal ions onto activated sludge, J. Environ. Sci., 16 (2004) 640–645.