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Abstract

This paper presents the results of tests performed on an installation with an aerated microelectrolytic bed (MEL-bed) and sludge sedimentation. The systems were designed in two versions, differing in the aeration method, i.e., a mechanically aerated coagulator (MAC) and an automatically aerated coagulator (AAC). The experiment demonstrated a high (approx. 84%) efficiency of phosphorus removal from a model solution for both versions. The corroding bed was the source of iron in the solution. In the initial phase aeration method affected the phosphorus removal rate, flocculation and sedimentation processes. Physical and chemical changes in the MEL-bed packing were observed.
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Bibliography

  1. Deng, Y., Englehardt, J.D., Abdul-Aziz, S., Bataille, T., Cueto, J., De Leon, O., Wright, M.E., Gardinali, P., Narayanan, A., Polar, J. & Tomoyuki, S. (2013). Ambient iron-mediated aeration (IMA) for water reuse, Water Research, 47, pp. 850–858, DOI: 10.1016/j.watres.2012.11.005
  2. El Samrani, A.G., Lartiges, B.S., Montarges-Pelletier, E., Kazpard, V., Barres, O. & Ghanbaja, J. (2004).Clarification of municipal sewage with ferric chloride: the nature of coagulant species, Water Research, 38, pp. 756–768, DOI: 10.1016/jwatres.2003.10.002.
  3. Gromiec, M.J. & Gromiec, T.M. (2010). Controlling of eutrophication in aquatic environments, Journal of Water and Land Development, 14, pp. 29–35.
  4. Gu, A.Z., Liu, L., Neethling, J.B., Stensel, H.D. & Murthy, S. (2011). Treatability and fate of various phosphorus fractions in different wastewater treatment processes, Water Science and Technology, 63 (4), pp. 804–810, DOI: 10.2166/wst.2011.215.
  5. Lai, B., Zhou, Y. & Yang, P. (2012). Passivation of sponge iron and GAC in Fe0/GAC mixed-potential corrosion reactor, Industrial & Engineering Chemistry Research, 51(22), pp. 7777–7785, DOI: 10.1021/ie203019t.
  6. Lakshmanan, D., Clifford, D.A. & Samanta, G. (2009). Ferrous and ferric ion generation during iron electrocoagulation, Environmental Science and Technology, 43(10), pp. 3853–3859, DOI: 10.1021/es8036669.
  7. Li, C., Ma, J., Shen, J. & Wang, P. (2009). Removal phosphate from secondary effluent with Fe2+ enhanced by H2O2 at nature pH/neutral pH, Journal of Hazardous Materials, 166, pp. 891–896, DOI: 10.1016/j.jhazmat.2008.11.111.
  8. Libecki, B. (2018) Koagulator do oczyszczania ścieków (Coagulator for wastewater treatment) Patent Application, Polish Patent Office, application No: P.426089
  9. Ma, L. & Zhang, W.-X. (2008). Enhanced biological treatment of industrial wastewater with bimetallic zero-valent iron, Environmental Science and Technology, 42, pp. 5384–5389, DOI: 10.1021/es801743s.
  10. Mak, M.S.H., & Irene, M.C. (2009). Effects of hardness and alkalinity on the removal of arsenic(V) from humic acid-deficient and humic acid-rich groundwater by zero-valent iron, Water Research, 43, pp. 4296–4304, DOI: 10.1016/j.watres.2009.06.022.
  11. Qin, Sh., Li, X., Zhang, T. & Ronga, W. (2011). Pretreatment of chemical cleaning wastewater by microelectrolysis process, Procedia Environmental Sciences, 10, pp. 1154–1158, DOI: 10.1016/j.proenv.2011.09.184.
  12. Sarin, P., Snoeyink, V.L., Lytle, D.A. & Kriven, W.M. (2004). Iron corrosion scales: model for scale growth, iron release, and colored water formation, Journal of Environmental Engineering, 4, pp. 364–373.
  13. Sleiman, N., Deluchat, V., Wazne, M., Mallet, M., Courtin-Nomade, A., Kazpard, V. & Baudu, M. (2016). Phosphate removal from aqueous solution using ZVI/sand bed reactor: Behavior and mechanism, Water Research, 99, pp. 56–65, DOI: 10.1016/j.watres.2016.04.054.
  14. Smoczyński, L., Muńska, K.T., Kosobucka, M. & Pierożyński, B. (2014). Phosphorus and COD removal from chemically coagulated wastewater, Environmental Protection Engineering, 40(3), pp. 63–73.
  15. Sterner, R.W. (2008). On the Phosphorus Limitation Paradigm for Lakes, International Review of Hydrobiology, 93, 4–5, pp. 433–445, DOI: 10.1002/iroh.200811068.
  16. Sun, Y., Li, J., Huang, T. & Guan, X. (2016). The influeces of iron characteristics, operating conditions and solution chemistry on contaminants removal by zero-valent iron: A review, Water Research, 100, pp. 277–295, DOI: 10.1016/j.watres.2016.05.031.
  17. Tarkowska-Kukuryk, M. (2013). Effect of phosphorus loadings on macrophytes structure and trophic state of dam reservoir on a small lowland river (eastern Poland), Archives of Environmental Protection, 39, 3, pp. 33–46, DOI:10.2478/aep-2013-0029.
  18. Wan, W., Pepping, T.J., Banerji, T., Chaudhari, S. & Giammar, D.E. (2011). Effects of water chemistry on arsenic removal from drinking water by electrocoagulation, Water Research, 45(1), pp. 384–392, DOI: 10.1016/j.watres.2010.08.016.
  19. Wei, M.-Ch., Wang, K.-S., Hsiao, T.-E., Lin, I.-Ch., Wu, H.-J., Wu, Y.-L., Liu, P.-H. & Chang, S.-H. (2011). Effects of UV irradiation on humic acid removal by ozonation, Fenton and Fe0/air treatment: THMFP and biotoxicity evaluation, Journal of Hazardous Materials, 195(15) pp. 324–331, DOI: 10.1016/j.jhazmat.2011.08.044.
  20. Yang, X., Xue, Y. & Wang, W. (2009). Mechanism, kinetics and application studies on enhanced activated sludge by interior microelectrolysis, Bioresources Technology, 2009, 100(2), pp. 649–653, DOI: 10.1016/j.biortech.2008.07.035.
  21. Yang, Z., Ma, Y., Liu, Y., Li, Q., Zhou, Z. & Ren, Z. (2017).Degradation of organic pollutants in near-neutral pH solution by Fe-C micro-electrolysis system. Chemical Engineering Journal, 315, pp. 403–414, DOI: 10.1016/j.cej.2017.01.042.
  22. Yanhe, H., Han, L., Meili, L., Yimin, S., Cunzhen, L. & Jiaqing, Ch. (2016). Purification treatment of dyes wastewater with a novel micro-electrolysis reactor, Separation and Purification Technology, 170, pp. 241–247, DOI: 10.1016/j.seppur.2016.06.058.
  23. Yuan, S., Wu, Ch., Wan, J. & Lu, X. (2009). In situ removal of copper from sediments by a galvanic cell, Journal of Environmental Management, 90, 421–427, DOI: 10.1016/j.jenvman.2007.10.009.
  24. Zou, H. & Wang, Y. (2017). Optimization of induced crystallization reaction in a novel process of nutrients removal coupled with phosphorus recovery from domestic wastewater, Archives of Environmental Protection, 43(4), 33–38, DOI: 10.1515/aep-2017-0037.

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Authors and Affiliations

Bartosz Libecki
1
ORCID: ORCID
Tomasz Mikołajczyk
1
ORCID: ORCID

  1. Department of Chemistry, Faculty of Environmental Management and Agriculture, University of Warmia and Mazury in Olsztyn, Poland
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Abstract

Advanced automotive fleet repair facility wastewater treatment was investigated with Zero-Valent Iron/Hydrogen Peroxide (Air/ZVI/H2O2) process for different process parameters: ZVI and H2O2 doses, time, pH. The highest Chemical Oxygen Demand (COD) removal efficiency, 76%, was achieved for ZVI/H2O2 doses 4000/1900 mg/L, 120 min process time, pH 3.0. COD decreased from 933 to 227 mg/L. In optimal process conditions odor and color were also completely removed. COD removal efficiency was increasing with ZVI dose. Change pH value below and over 3.0 causes a rapid decrease in the treatment effectiveness. The Air/ZVI/H2O2 process kinetics can be described as d[COD]/dt = −a [COD]tm, where ‘t’ corresponds with time and ‘a’ and ‘m’ are constants that depend on the initial reagent concentrations. H2O2 influence on process effect was assessed. COD removal could be up to 40% (560 mg/L) for Air/ZVI process. The FeCl3 coagulation effect was also evaluated. The best coagulation results were obtained for 700 mg/L Fe3+ dose, that was slightly higher than dissolved Fe used in ZVI/H2O2 process. COD was decreased to 509 mg/L.

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Authors and Affiliations

Jan Paweł Bogacki
Hussein Al-Hazmi
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Abstract

The removal of nitrates from aqueous solutions is cumbersome because of their high solubility in water. The use of zero-valent iron (ZVI) for the reduction of nitrates is the chemical process and it is an alternative method to the biological ones. The aim of the present study was to evaluate the eff ectiveness of nitrates removal from water solution by using the ZVI process. The process was coupled with the removal of COD, phosphates and turbidity by using by-products of nitrates reduction. Batch tests were performed to evaluate the eff ectiveness of ZVI in the removal of nitrates from aqueous solutions. The eff ectiveness of nitrates removal was analyzed after 5, 10, 20, 30 and 60 min. and compared to the initial concentration of pollutants. Simultaneously analysis of ammonium nitrogen and nitrites was controlled to identify products of nitrates reduction under various pH. The removal of COD, phosphates and turbidity was also performed in batch tests. The eff ectiveness of the emoval by using three types of chemicals was compared – PIX, FeSO4, and waste Fe2+/Fe3+ from the ZVI process. The results obtained in the study indicate that ZVI can be eff ectively used in the treatment of water polluted with nitrates and the by-products of the process could be further applied in the removal of COD, phosphates and turbidity. Based on the results the method should be advised as a promising alternative to the technologies used nowadays under technical scale as a technology that fits with a circular economy.

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Authors and Affiliations

Ewa Wiśniowska
1
Maria Włodarczyk-Makuła
1

  1. Częstochowa University of Technology, Poland

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