sewage sludge treatment Articles
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Concentrations of 61 Trace Elements in Sewage Sludge, Farmyard Manure, Mineral Fertiliser, Precipitation and in Oil and Crops
This report details the concentrations of over 60 elements in sewage sludge from 48 sewage treatment plants across Sweden; manure from pigs and cattle from 12 farms; the most common NPK and P fertilisers (2 of each sort); precipitation during one year from Gårdsjön in west Sweden; 25 topsoil and 25 subsoil samples from a variety of soil types; and 20 samples of winter wheat grains and 5 samples ...
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Factors affecting decay of
Salmonella Birkenhead and coliphage MS2 during mesophilic anaerobic digestion and air drying of sewage sludgeFactors affecting the decay of Salmonella Birkenhead and coliphage, as representatives of bacterial and viral pathogens, respectively, during mesophilic anaerobic digestion (MAD) and air drying treatment of anaerobically digested sewage sludge were investigated. Controlled concentrations of S. Birkenhead were inoculated into non-sterile, autoclaved, γ-irradiated and nutrient-supplemented ...
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Ultrasonic impact on bacterial population in sewage sample
Nine samples of sewage sludge from different paper mills of New Delhi were treated with ultrasonic waves of two different frequencies, viz., 35 kHz and 130 kHz for different time periods (5, 10, 20 and 30 min). Treated sewage sludge was then evaluated with different parameters, viz., Chemical Oxygen Demand(COD), Biochemical Oxygen Demand (BOD), Total Nitrogen, Total Phosphorus, Total Ammonia and ...
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