Institutional Repository
Technical University of Crete
Technical University of Crete
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| URI: | http://purl.tuc.gr/dl/dias/69CE861F-F50D-4DDB-A118-5E4B6BE699D6 | ||
| Year | 2023 | ||
| Type of Item | Diploma Work | ||
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| Bibliographic Citation | Christos Kampourakis, "Microsieving of raw sawage at the wastewater treatment plant of Rethymno: Yield and energy content of produced biosolids", Diploma Work, School of Chemical and Environmental Engineering, Technical University of Crete, Chania, Greece, 2023 https://doi.org/10.26233/heallink.tuc.94762 | ||
| Appears in Collections |
The rapid population and industrial growth directly contribute to the increase in the daily produced biosolids. The needs created by the continuous increasing trend of waste production cannot be met by the methods used in the past. Due to the significant energy content of microsieved biosolids, their integrated management is proposed with the aim of energy production, applying drying and gasification technologies.In this thesis, the characteristics of the incoming and outgoing wastewater at the Wastewater Treatment Plant (WWTP) of Rethymno were recorded, the monitoring of the operation and performance of a pilot microsieve installed in this WWTP was carried out, as well as the evaluation of the energy content of the produced micro-sieved biosolids with the perspective of further their utilization. More specifically, the measurements of the incoming and outgoing wastewater of the WWTP of Rethymno resulted to concentration of TSS (170 ± 59 mg/L, 19 ± 11 mg/L), BOD5 (311 ± 46 mg/L, 7 ± 2 mg/L), and COD (199 ± 46 mg/L, 62 ± 18 mg/L), respectively. Also, regarding microsieving performance and produced biosolids characteristics were measured: TSS inlet (194 ± 51 mg/L) and TSS outlet (159 ± 46 mg/L), moisture (M) of microsieved biosolids (64 ± 2% ), VS (90 ± 1% of TS) as well as HHV (21.5 ± 1.4 MJ/kg).Finally, due to the significant energy content of microsieved biosolids, their integrated management was proposed with the aim of energy production, including microsieving-solar drying-gasification technologies. Based on the calculations made, such a system can operate autonomously, since the energy produced is expected to cover the energy needs of the pilot plant and consequently cause a significant reduction in the overall energy needs of WTP.
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