Composting of sewage sludge in a rotating vessel

1995 ◽  
Vol 32 (11) ◽  
pp. 121-125 ◽  
Author(s):  
M. Fürhacker ◽  
R. Haberl
Keyword(s):  
Sewage Sludge ◽  
Wastewater Treatment Plants ◽  
Domestic Wastewater ◽  
Control Programme ◽  
Domestic Wastewater Treatment ◽  
Inorganic Content ◽  
Plant Test ◽  
Agricultural Use ◽  
Intensive Control

Composting of sewage sludge can enhance its quality and suitability for agricultural use. In this work the optimal conditions for composting sewage sludge of small domestic wastewater treatment plants in a rotating vessel with the aim of sanitary safety were investigated. An intensive control programme with regard to viruses, bacteria and parasites was carried out that showed that the hygienic quality was satisfactory. A second aspect was the investigation of a possible reduction of hazardous organic and inorganic pollutants. The amount of inorganic micropollutants was low and did not change based on inorganic content. Based on inorganic residues, losses of 15.7% of the AOX and 25% of the EOX could be found. Relatively high decreasing rates of detergent concentrations could be measured. Only 31.1% of the original load of anionic detergents (measured as MBAS), 38.7% of the cationic and 57.4% of the non-ionic detergents could be detected in the end material. For PAH concentration reduction between 31.5% of fluoranthene and 90.6% benzo(a)pyrene can be reported. All values are based on the inorganic residues. The quality of the resulting compost showed in the plant test a growth rate which qualified the compost to be used to increase soil quality.

Treatment and Quality of Sewage Sludge in Germany - Results of a Survey

2007 ◽  
Vol 2 (1) ◽  
Author(s):  
A. Meda ◽  
C. Schaum ◽  
M. Wagner ◽  
P. Cornel ◽  
A. Durth
Keyword(s):  
Sewage Sludge ◽  
Treatment Process ◽  
Wastewater Treatment Plants ◽  
Current Status ◽  
Sludge Treatment ◽  
Sewage Sludge Treatment ◽  
Treatment And Disposal ◽  
German Association ◽  
Entire Treatment

TIn 2004, the German Association for Wastewater, Water and Waste (DWA) carried out a survey about the current status of sewage sludge treatment and disposal in Germany. The study covered about one third of the wastewater treatment plants and about two thirds of the entire treatment capacity (expressed in population equivalents) in Germany. This provides an up-to-date and representative database. The paper presents the most important results regarding sludge treatment, process engineering, current disposal paths and sewage sludge quality.

Domestic wastewater treatment in waste stabilization ponds for irrigation in Mendoza, Argentina: policies and challenges

2002 ◽  
Vol 45 (1) ◽  
pp. 127-132 ◽  
Author(s):  
O.R. Vélez ◽  
G.E. Fasciolo ◽  
A.V. Bertranou
Keyword(s):  
Domestic Wastewater ◽  
Treated Wastewater ◽  
Water Shortages ◽  
Waste Stabilization Ponds ◽  
Domestic Wastewater Treatment ◽  
Waste Stabilization ◽  
Agricultural Applications ◽  
Agricultural Use ◽  
Domestic Effluents ◽  
Set Up

Arid areas call for imaginative water management solutions to avoid the dangers of water shortages. Growing demands of water for domestic and industrial uses decrease the availability of water for agriculture. It therefore becomes necessary to set up a policy for the use of domestic effluents. For the province of Mendoza, Argentina, with 1,500,000 inhabitants, a master plan was designed as of 1991 for the treatment of domestic effluents and subsequent disposal for irrigation. The guidelines set up by WHO for the use of wastewater in agricultural applications were taken into consideration. At present, the Province of Mendoza has available projects which are either complete, in execution or in the bidding process, entailing secondary treatment capacity with reuse of 320,000 cubic metres/day and an estimated possible irrigation area of 10,000 hectares. With this infrastructure, some strategic lines of action are recommended to establish a policy for the agricultural use of wastewater: (a) to program the use of treated wastewater to avoid discharges to irrigation flows; (b) to develop an institutional scheme for the efficient and safe use of these waters; and (c) develop scientific and technologic know-how to accompany the updated policies.

scholarly journals AN EFFICIENT APPROACH TO MANAGE DOMESTIC WASTEWATER IN SMART CITY

2020 ◽  
Vol XLIV-4/W3-2020 ◽  
pp. 391-398
Author(s):  
A. Taouraout ◽  
A. Chahlaoui ◽  
D. Belghyti ◽  
I. Taha ◽  
M. Lachhab
Keyword(s):  
Smart City ◽  
Domestic Wastewater ◽  
Treated Wastewater ◽  
Acceptable Solution ◽  
Organic Matters ◽  
Human Waste ◽  
Ecological Sanitation ◽  
Limit Value ◽  
Domestic Wastewater Treatment

Abstract. The adoption of an ecological sanitation system, meeting the requirements hygienic and sanitary, constitutes a feasible and technically and economically acceptable solution in the future smart city. This new sanitation concept has the advantage of solving the problems of pathogens of human waste at source, thus offering the possibility of reusing them after treatment (recycling) in order to improve the standard of living of the population and protect the environment. The aim of this study is to evaluate the efficiency of a vertical Multi-Soil-Layering system (MSL) system to treat domestic wastewater under three hydraulic loading rates: 250 L/m2/day, 350 L/m2/day and 500 L/m2/day, in Moroccan conditions. To do this, a vertical MSL system measuring 20cm × 60cm × 78cm (L × W × H) was designed to treat domestic wastewater and his performance was investigated. The results showed high removal of organic matters and nutrients under the three hydraulic loads tested; the performance averages recorded are upper than 84 % for organic matters, 83.1 ± 7.2 % for ammonium and 72.4 ± 14.1 % for orthophosphate. The quality of the treated wastewater was evaluated according to Moroccan reject limit value. Consequently, this system could be considered an effective solution to be adopted for decentralized domestic wastewater treatment in Moroccan conditions.

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