digestate treatment Articles
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Reducing Dewatered Sludge Cake Volume: A Practical Demonstration
With the advent of new legislation and emphasis on sludge treatment, generofy the 1st phot© (excluding digestion) m the sludge treatment process will be sludge dewatetfng Htstortcaly sludge drying beds were used for this, however, mechanical sludge dewatertng and specifically sludge dewatertng using a belt press is now regarded as the norm for sludge volume reduction. within the US there ...
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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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Life cycle assessment of sludge management with phosphorus utilisation and improved hygienisation in Sweden
To provide input to sewage sludge management strategies that address expected new regulations in terms of hygienisation and phosphorus recovery in Sweden, an environmental life cycle assessment (LCA) was made. The LCA identified environmental hot spots for methods that may permit sludge or phosphorus from sludge to be applied on agricultural land. In particular, thermophilic digestion, ...
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Influence of chemically enhanced primary treatment on anaerobic digestion and dewaterability of waste sludge
To lower energy consumption at a sewage treatment plant (STP), primary settling could be enhanced to direct more chemical oxygen demand (COD) to anaerobic digestion (AD) for increased biogas production and decreased aeration. Primary settling can be chemically enhanced by applying flocculation aids (FAs). FAs are refractory compounds that may affect all sludge treatment facilities. In this ...
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The function of sludge drying
Drying the sludge has the following advantages: (1) Reduction: Due to the high water content of the sludge, the volume is large and fluid. After the above process, the volume of sludge is reduced to one tenth of the original, and it is converted from liquid to solid, which is convenient for transportation and consumption. (2) Stabilization: The sludge has a high content of organic matter, which ...
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What Is the Sludge Treatment Process?
Raw, untreated sewage is a serious hazard to the environment as well as to the nearby population. However, through proper treatment, wastewater facilities can keep up with demand, reduce pathogenic risks, and reintroduce clean water back into the environment. Learn more about the role of sludge treatment in improving wastewater processing. Sewage Sludge When municipal wastewater treatment ...
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Sludge drying and disposal ways
With the rapid growth of urbanization in my country in recent years, a large number of centralized sewage treatment plants have been added and expanded, and the output of sludge has increased rapidly. It is estimated that the annual output of dewatered sludge will reach 30 million tons. Whether from the perspective of pathogens or heavy metals, the traditional treatment methods of direct ...
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