Anaerobic treatment of residuals from tanks transporting food and fodder
| العنوان: | Anaerobic treatment of residuals from tanks transporting food and fodder |
|---|---|
| المؤلفون: | Jens Tränckner, Dirk Awe, Erik Beyer, Jan Neumann, Wolfgang Pfeiffer, Van Than Nguyen |
| المصدر: | Environmental Science and Pollution Research International |
| بيانات النشر: | Springer Science and Business Media LLC, 2018. |
| سنة النشر: | 2018 |
| مصطلحات موضوعية: | Anaerobic treatment, Health, Toxicology and Mutagenesis, Biogas plant, Alkalinity, Wastewater, 010501 environmental sciences, Waste Disposal, Fluid, 01 natural sciences, Bioreactors, Biogas, Fodder, Germany, Environmental Chemistry, Anaerobiosis, 0105 earth and related environmental sciences, Physiochemical model of anaerobic digestion, Treatment process, Green Approaches for Materials, Wastes and Effluents Treatment, Wastewater from the cleaning of tank cars transporting food and fodder, General Medicine, Pulp and paper industry, Animal Feed, Pollution, Anaerobic digestion, Biofuels, Environmental science, Methane, Mesophile |
| الوصف: | The anaerobic digestion of wastewater from the cleaning of tank cars transporting food and fodder was investigated in both bench and pilot scales with a single-stage, mesophilic (39 °C), completely mixed process. The promising results lead to the planning and building of a 1200-m3 full-scale biogas plant at TS-Clean cleaning station in Fahrbinde, Germany. Due to softened water used in the cleaning of the car tanks, the alkalinity in the digester decreased as predicted by the physicochemical model developed for this treatment process. The model showed that 2.4 kg NaHCO3/m3 of wastewater has to be added in order to control digester pH at 7.2 and to maintain the digester alkalinity at 3.1 g CaCO3/L. In a laboratory study, the decrease of alkalinity caused a volatile organic acids accumulation and pH drop below the optimal range. In this case, if chemical buffering was not added into the digester, the digester deteriorated. In a 3-year investigation, we confirmed that the strongly polluted WW from the cleaning of tank cars transporting food and fodder is suitable for an anaerobic treatment if the organic loading rate is controlled below 4 kg COD/m3/day, digester alkalinity is adjusted by NaHCO3, and micronutrients are added despite constant considerable variations in strength and composition of the wastewater. A biogas yield of 35–45 m3 CH4/m3 of wastewater and a COD elimination of 80–90% were achieved in bench- and pilot-scale experiments and are achieved in the full-scale biogas plant. The full-scale biogas plant is working stable with a biogas yield of 68 m3 biogas/m3 of wastewater. |
| تدمد: | 1614-7499 0944-1344 |
| DOI: | 10.1007/s11356-018-3876-z |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::508437d501911eb2e037ec6b99c1d976 https://doi.org/10.1007/s11356-018-3876-z |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....508437d501911eb2e037ec6b99c1d976 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 16147499 09441344 |
|---|---|
| DOI: | 10.1007/s11356-018-3876-z |