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Characterization of composted sewage sludge during the maturation process: a pilot scale study.
Environ Sci Pollut Res Int 2018; 25(34):34332-34342ES

Abstract

This paper determines the impact of the maturation process of composted sewage sludge on the quality of the final product and assesses the stabilization effect. The samples of composted sewage sludge were taken from a wastewater treatment plant located in Pomerania in northern Poland. The sewage sludge was composted in an open windrow composting plant with the addition of straw and wood chips in the turning windrow. The aeration of the sewage sludge mixture was conducted based on two methods. The first phase (intensive degradation phase of 6 to 8 weeks) was characterized by frequently turning; the second phase for maturation used aeration channels (2 to 3 months). In three sampling campaigns samples were taken from the same windrow after 2 (no. 1), 8 (no. 2), and 12 weeks (no. 3) of maturation. Fresh samples were used for analyzing the stabilization parameter as static respiration activity (AT4). Furthermore, the values of pH, organic matter (OM), total organic carbon (TOC), elementary composition, nutrients, total content, and mobile forms of heavy metals were analyzed in the compost samples. A significant decrease was found in the stabilization parameter (AT4) during the maturation of tested materials. In turn, no significant differences were found in the elementary composition. The concentration of most metals increased in the final product. The total content of heavy metals in the final product did not exceed the limit values for the agricultural use of sewage sludge, compost from municipal waste, and for organic fertilizers. There were no significant changes in the percentage of bioavailable and mobile forms of heavy metals during compost maturation. Zinc was characterized by the highest level of mobile and bioavailable forms, which may cause bioaccumulation after the fertilization of soil. The study has shown that the process of maturation of compost from sewage sludge not affects changes in the content of heavy metal forms. The scope of this study has been planned on a wider scale for different variants of sewage sludge composting, in order to evaluate the process.

Authors+Show Affiliations

Opole University of Technology, Proszkowska 76 street, 45-758, Opole, Poland. m.bozym@po.opole.pl.Building Materials Engineering Division in Opole, Institute of Ceramics and Building Materials, Oswiecimska 21 street, 45-641, Opole, Poland.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

30298354

Citation

Bożym, Marta, and Grzegorz Siemiątkowski. "Characterization of Composted Sewage Sludge During the Maturation Process: a Pilot Scale Study." Environmental Science and Pollution Research International, vol. 25, no. 34, 2018, pp. 34332-34342.
Bożym M, Siemiątkowski G. Characterization of composted sewage sludge during the maturation process: a pilot scale study. Environ Sci Pollut Res Int. 2018;25(34):34332-34342.
Bożym, M., & Siemiątkowski, G. (2018). Characterization of composted sewage sludge during the maturation process: a pilot scale study. Environmental Science and Pollution Research International, 25(34), pp. 34332-34342. doi:10.1007/s11356-018-3335-x.
Bożym M, Siemiątkowski G. Characterization of Composted Sewage Sludge During the Maturation Process: a Pilot Scale Study. Environ Sci Pollut Res Int. 2018;25(34):34332-34342. PubMed PMID: 30298354.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Characterization of composted sewage sludge during the maturation process: a pilot scale study. AU - Bożym,Marta, AU - Siemiątkowski,Grzegorz, Y1 - 2018/10/08/ PY - 2018/03/12/received PY - 2018/09/25/accepted PY - 2018/10/10/pubmed PY - 2019/3/6/medline PY - 2018/10/10/entrez KW - Compost KW - Heavy metals KW - Leachability KW - Nutrients KW - Sewage sludge KW - Stabilization degree SP - 34332 EP - 34342 JF - Environmental science and pollution research international JO - Environ Sci Pollut Res Int VL - 25 IS - 34 N2 - This paper determines the impact of the maturation process of composted sewage sludge on the quality of the final product and assesses the stabilization effect. The samples of composted sewage sludge were taken from a wastewater treatment plant located in Pomerania in northern Poland. The sewage sludge was composted in an open windrow composting plant with the addition of straw and wood chips in the turning windrow. The aeration of the sewage sludge mixture was conducted based on two methods. The first phase (intensive degradation phase of 6 to 8 weeks) was characterized by frequently turning; the second phase for maturation used aeration channels (2 to 3 months). In three sampling campaigns samples were taken from the same windrow after 2 (no. 1), 8 (no. 2), and 12 weeks (no. 3) of maturation. Fresh samples were used for analyzing the stabilization parameter as static respiration activity (AT4). Furthermore, the values of pH, organic matter (OM), total organic carbon (TOC), elementary composition, nutrients, total content, and mobile forms of heavy metals were analyzed in the compost samples. A significant decrease was found in the stabilization parameter (AT4) during the maturation of tested materials. In turn, no significant differences were found in the elementary composition. The concentration of most metals increased in the final product. The total content of heavy metals in the final product did not exceed the limit values for the agricultural use of sewage sludge, compost from municipal waste, and for organic fertilizers. There were no significant changes in the percentage of bioavailable and mobile forms of heavy metals during compost maturation. Zinc was characterized by the highest level of mobile and bioavailable forms, which may cause bioaccumulation after the fertilization of soil. The study has shown that the process of maturation of compost from sewage sludge not affects changes in the content of heavy metal forms. The scope of this study has been planned on a wider scale for different variants of sewage sludge composting, in order to evaluate the process. SN - 1614-7499 UR - https://www.unboundmedicine.com/medline/citation/30298354/Characterization_of_composted_sewage_sludge_during_the_maturation_process:_a_pilot_scale_study_ L2 - https://dx.doi.org/10.1007/s11356-018-3335-x DB - PRIME DP - Unbound Medicine ER -