sewage sludge processing Articles
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Sludge Treatment and Disposal Technologies
Most wastewater treatment processes produce a by-product that purifies wastewater before it is released into local waterways. This by-product is named as sludge. Typically in solid, semi-solid or liquid state, it is in fact an amalgamation of all the liquid wastes that are discharged by domestic houses, commercial properties, industry, and/or agriculture after aerobic biological treatment. ...
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Sustainable odour control in urban environments
Abstract With an ever increasing focus on sustainability, the municipal recycling sector is increasingly locating recycling facilities in urban environments to be closer to their waste sources. The odour control industry needs to respond in providing ever more efficient odour extraction technologies to minimise any odour nuisance to their residential community neighbours. In addition, cost ...
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Working Document on Sludge
Untitled Document Introduction Sewage sludge originates from the process of treatment of waste water. Due to the physical-chemical processes involved in the treatment, the sludge tends to concentrate heavy metals and poorly biodegradable trace organic compounds as well as potentially pathogenic organisms – viruses, bacteria etc. – present in waste water. Sludge is, however, ...
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Continuous Pyrolysis Facility for Sewage Sludge Treatment
The amount of sewage sludge is catastrophically increased in the latest few decades due to functioning of the municipal sewage treatment facilities. Dry sewage sludge contains 70-90% of the organic substances and 10-30% of the inorganic substances, which are dangerous for human health in case of inappropriate utilization. The continuous pyrolysis technology presents the unique sewage sludge ...
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The effect of lime-dried sewage sludge on the heat-resistance of eco-cement
The treatment and disposal of sewage sludge is a growing problem for sewage treatment plants. One method of disposal is to use sewage sludge as partial replacement for raw material in cement manufacture. Although this process has been well researched, little attention has been given to the thermal properties of cement that has had sewage sludge incorporated in the manufacturing process. This ...
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Dispose of sewage sludge
Sewage sludge treatment describes the processes used to manage and dispose of sewage sludge produced during sewage treatment. Sludge treatment is focused on reducing sludge weight and volume to reduce transportation and disposal costs, and on reducing potential health risks of disposal options. Water removal is the primary means of weight and volume reduction, while pathogen destruction is ...
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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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The role of SSVF and SSHF beds in concentrated wastewater treatment, design recommendation
The return flows of reject water from sewage sludge dewatering alter the activated sludge process in a conventional WWTP and increase TN concentration in the final effluent from WWTP. The objective of the investigation carried out was to consider the application of multistage treatment wetland (MTW) for the treatment of reject water from sewage sludge dewatering in a centrifuge (RWC). This paper ...
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Pharmaceuticals in processing of municipal sewage sludge studied by grab and passive sampling
Concentrations of pharmaceuticals, consisting of four anti-inflammatory and one antiepileptic drug, were studied in the aqueous and solid phase of municipal sewage sludge, collected from a wastewater treatment plant (WWTP) in central Finland. The samples included untreated municipal sludge from the biological wastewater treatment, digested sludge and sludge before and after composting. First, ...
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Investigation of the effects of temperature and sludge characteristics on odors and VOC emissions during the drying process of sewage sludge
Sludge drying is a necessary step for sludge disposal. In this study, sludge was collected from two wastewater treatment plants, and dried at different temperatures in the laboratory. The emission of odor and total volatile organic compounds (TVOCs) during the sludge drying process were determined by an online odor monitoring system. The volatile organic compounds (VOCs) in off-gas were ...
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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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The sludge dryer can treat all kinds of sludge
Sludge is a collective term for various types of sediments and floating objects produced by different treatment processes in water supply and wastewater treatment. The composition and properties of the sludge mainly depend on the composition, properties and treatment process. According to different classification standards. There are many classification methods for sludge, which are briefly ...
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4-Step Wastewater Sludge Treatment Process
What is in sewage sludge? Sewage sludge is a byproduct of treated wastewater. It is composed of both organic and inorganic materials, a large concentration of plant nutrients, organic chemicals, as well as pathogens. Therefore, it is extremely important to properly treat such sludge in order to minimize its environmental repercussions. Here is a brief overview of the sludge treatment process to ...
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Co-fermentation of sewage sludge and biowastes
The anaerobic treatment of sewage sludge has a long history in Germany. It began early in the Twentieth Century with the development of the Imhoff tank and has, since then, been con-tinuously further developed. Today, anaerobic sludge digestion is the most widely used process for stabilizing sewage sludges. Digesters, in which a portion of the sewage sludge is converted into utilizable biogas ...
By ORBIT e.V.
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Acetic acid recovery from a hybrid biological–hydrothermal treatment process of sewage sludge – a pilot plant study
A two-stage process consisting of anaerobic fermentation followed by sub-critical wet oxidation was used to generate acetic acid from sewage sludge at pilot scale. Volatile fatty acids, dominated by propionic acid, were produced over 4–6 days in the 2,000 L fermentation reactor, which also achieved 31% solids reduction. Approximately 96% of the carbon was retained in ...
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7 Disadvantages of Implementing an Activated Sludge Process For Your Municipality or Company
Biological treatment processes are an important component in many wastewater treatment systems. They are one of the most efficient and effective ways of reducing organic material in wastewater. There are quite a few of them that have been researched and used over several decades. However, one of the most widely used conventional biological treatment process is the activated sludge process (ASP). ...
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Silent sentinel role for static gas analyser at United Utilities
Biogas produced by the United Utilities anaerobic digestion sludge plant at Lancaster (Stodday) waste water-treatment runs a brand new 525kW combined heat and power (CHP) engine generating electricity and now operating 24/7. It joins an existing 325kW engine already in service for three years. In addition to biogas from the Stodday mesophilic anaerobic digester, a new enzymic hydrolyser increases ...
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The Connection & Difference between Low Temperature Sludge Drying and Ordinary Sludge Drying
The sludge drying technology has an early origin. In the early 19th century, the Germans invented the world's first plate and frame filter press. Today, after two hundred years of development, various types of filter presses have been born for different scenarios. The domestic sludge drying industry started late, sprouting in the period of reform and opening up in the late 1970s. Due to the ...
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The connection and difference between low temperature sludge drying and sludge drying
The sludge drying technology has an early origin. In the early 19th century, the Germans invented the world's first plate and frame filter press. Today, after two hundred years of development, various types of filter presses have been born for different scenarios. The domestic sludge drying industry started late, sprouting in the period of reform and opening up in the late 1970s. Due to the ...
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Status Quo and Development Trend of Sludge Treatment
Mud Nature Sludge, as a by-product of sewage treatment, enriches sewage pollutants (heavy metals, refractory organics, persistent organics, microplastics, etc.) and nutrients (C, N, P, etc.), the source has the dual attributes of "resource" and "pollution". The rich organic matter contained in the sludge can be absorbed by anaerobic Fuels with high calorific value such as methane biogas (biogas) ...
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