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Details van artikel 13 van 23 gevonden artikelen
| Titel: |
Land application of lime stabilized septage |
| Auteur: |
Ritter, W. F. McDermott, J. G. Chirnside, A. E. H. Scarborough, R. W. |
| Verschenen in: |
Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering |
| Paginering: | Jaargang 27 (1992) nr. 7 pagina's 1701-1720 |
| Jaar: |
1992-10 |
| Inhoud: |
Lime stabilized septage was applied to an Evesboro loamy sand soil at rates of 66,300 and 747,000 L/ha. Corn was grown on half of the plots and the other half of the plots were left fallow. Corn yields varied from 2030 to 3550 kg/ha. Ground-water monitoring data indicates the septage did not cause nitrate or bacteria contamination. Lead concentrations increased slightly in the soil profile after the septage was applied. There was no change in phosphorus, calcium, magnesium, potassium, manganese, zinc or copper concentrations. Nitrate was leached out of the top 150 cm of the soil profile during the winter months. Regulations recently adopted by the Delaware Department of Natural Resources and Environmental Control (DNREC) for land application of sludges requires that all sludges be stabilized. Septage is classified as a sludge. In Sussex County, Delaware, many of the coastal developments are on individual septic tanks that are pumped every three to five years. There is also a large rural population in the County that have on-site wastewater systems. Host of the septage generated in Sussex County is applied to agricultural land. One method to stabilize septage is to add lime and increase the pH to above 12.0 for several hours. A lime stabilization project was initiated at the University of Delaware in cooperation with DNREC to characterize septage in Sussex County and to determine the impact of various septage loading rates and lime loading rates and field conditions on soil properties and ground-water quality. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 13 van 23 gevonden artikelen
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