Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | Partitioning of nutrients and micropollutants along the sludge treatment line: a case study |
| Abstract | A 2-year sampling campaign was conducted in three wastewater treatment plants of various sizes in the Rome area to assess the occurrence of nutrients and micropollutants among primary, secondary and digested sludge. The primary purpose was to evaluate the quality of different sludge types and their suitability for agricultural use. Primary sludgewas consistently more polluted than secondary in terms of organic micropollutants, whereas heavy metals partitioned equally among the sludge types. In digested sludge, the heavy metal concentrations were always below limit values proposed for agricultural utilisation. In contrast, organic micropollutants concentrated during anaerobic digestion and affected the quality of the digested sludge. Secondary sludge resulted less polluted and richer in nitrogen and phosphorus (up to three times) than primary sludge and is hence more suitable for agricultural use. Separate processing of primary and secondary sludge might therefore be an innovative option for sludge management that could maximise the possibilities of agricultural use of secondary sludge and limit disposal problems only to primary sludge. In fact, primary sludge could be easily treated and disposed of by conventional processes including thickening, anaerobic digestion, centrifugation and incineration, whereas the difficult digestibility of secondary sludge could be improved by disintegration pretreatment before stabilisation. |
| Source | Environmetal science and pollution research international (Internet) 20, pp. 6256–6265 |
| Keywords | Sewage sludgeNutrientsAgricultureHeavy metalsOrganic micropollutants |
| Journal | Environmetal science and pollution research international (Internet) |
| Editor | Springer, Berlin, Germania |
| Year | 2013 |
| Type | Articolo in rivista |
| DOI | 10.1007/s11356-013-1686-x |
| Authors | Gianico A., Braguglia C.M., Mascolo G., Mininni G. |
| Text | 213665 2013 10.1007/s11356 013 1686 x Sewage sludge Nutrients Agriculture Heavy metals Organic micropollutants Partitioning of nutrients and micropollutants along the sludge treatment line a case study Gianico A., Braguglia C.M., Mascolo G., Mininni G. Water Research Institute, CNR A 2 year sampling campaign was conducted in three wastewater treatment plants of various sizes in the Rome area to assess the occurrence of nutrients and micropollutants among primary, secondary and digested sludge. The primary purpose was to evaluate the quality of different sludge types and their suitability for agricultural use. Primary sludgewas consistently more polluted than secondary in terms of organic micropollutants, whereas heavy metals partitioned equally among the sludge types. In digested sludge, the heavy metal concentrations were always below limit values proposed for agricultural utilisation. In contrast, organic micropollutants concentrated during anaerobic digestion and affected the quality of the digested sludge. Secondary sludge resulted less polluted and richer in nitrogen and phosphorus up to three times than primary sludge and is hence more suitable for agricultural use. Separate processing of primary and secondary sludge might therefore be an innovative option for sludge management that could maximise the possibilities of agricultural use of secondary sludge and limit disposal problems only to primary sludge. In fact, primary sludge could be easily treated and disposed of by conventional processes including thickening, anaerobic digestion, centrifugation and incineration, whereas the difficult digestibility of secondary sludge could be improved by disintegration pretreatment before stabilisation. 20 http //link.springer.com/article/10.1007%2Fs11356 013 1686 x Articolo in rivista Springer 1614 7499 Environmetal science and pollution research international Internet Environmetal science and pollution research international Internet Environ. sci. pollut. res. int. Internet Environmental science and pollution research international. Internet Environmental science and pollution research Internet Internet ESPR Internet Internet camillamaria.braguglia BRAGUGLIA CAMILLA MARIA giuseppe.mininni MININNI GIUSEPPE andrea.gianico GIANICO ANDREA giuseppe.mascolo MASCOLO GIUSEPPE TA.P07.001.004 Trattamenti per il riutilizzo e per lo smaltimento dei fanghi di depurazione |