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Showing 1 to 20 of 26 for “"thermal hydrolysis"”.
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Conventional and Advanced Thermal Hydrolysis in Sewage Sludge Pre-treatment
The thermal hydrolysis process (THP), a method that employs heat (at temperatures surpassing those of autoclaves, reaching up to 200 ℃) and pressure (reaching up to 25 bar) in the absence of oxygen, holds promise as a technology for pre-treating sludge before anaerobic digestion (AD) to enhance …
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Evaluation of Solubilization with Thermal Hydrolysis Process of Municipal Biosolids
… sludge conditioning properties, the use of thermal hydrolysis process before anaerobic digestion has been adopted with an increase in solids destruction, COD removal, and methane gas. In this study, the evaluation of thermal hydrolysis process as a viable pretreatment strategy to anaerobic …
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Increased Anaerobic Digestion Efficiency via the Use of Thermal Hydrolysis
… improve sludge dewatering properties, the use of thermal hydrolysis (TH), a sludge pretreatment method, has been adopted by numerous wastewater treatment plants, among them being the District of Columbia Water and Sewage Authority (DC WASA). The use of anaerobic digestion in collaboration with …
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Development of an Integrated thermal hydrolysis process - Anaerobic Digestion (THPAD) Model
… However, despite the advantages associated with thermal treatment, this technology has not yet been proven in a South African context. This project involved the development of an integrated thermal hydrolysis process (THP) and anaerobic digestion (AD) model capable of simulating these processes …
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Effects of Thermal Hydrolysis Pre-Treatment on Anaerobic Digestion of Sludge
… readily degradable by anaerobic digestion. The thermal hydrolysis process has been used in several treatment plants around the world, but none currently operate in the US. Thermal hydrolysis causes cell walls to rupture under the effect of high temperature and high pressure and results in highly …
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Impact of operating conditions on thermal hydrolysis pre-treated digestion return liquor
Return liquor from thermal hydrolysis process (THP) can significantly add to the nitrogen load of a wastewater treatment plant (WWTP) and introduce UV quenching substances to the wastewater stream when recycled. While there are mature technologies in place to handle the inorganic nitrogen produced …
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Wastewater Carbon Diversion and Recovery via Primary Sludge Production, Thermal Hydrolysis, and Anaerobic Digestion
… and odor potential. In terms of the roles of thermal hydrolysis pretreatment (THP), the mechanism review indicated that the improvement of sludge dewaterability and anaerobic digestibility as a result of THP was because of the destruction of extracellular polymeric substances and increase of …
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Thermal Hydrolysis of LCFAs and Influence of pH on Acid-phase Codigestion of FOG
… of long chain fatty acids (LCFA) degradation in thermal hydrolysis pretreatment and the influence of pH on LCFA degradation in two-phase co-digestion systems were studied. LCFA thermal hydrolysis was investigated at different temperatures (90-250 °C) and reaction times (30 minutes and 8 hours). …
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Characterization and treatment of UV quenching substances and organic nitrogen in landfill leachates and thermal hydrolysis/anaerobic digestion centrate
Landfill leachates and thermal hydrolysis pretreated anaerobic digestion centrate can quench UV light at publicly owned treatment works (POTWs). Increased eutrophication, has led to tightening of nutrient discharge limits in some regions of the country. Biologically recalcitrant organic nitrogen, …
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Establishing the environmental and economic benefits of applying advanced thermal hydrolysis to existing anaerobic digesters in the Western Cape, South Africa
… a waste stream into a resource. Retrofitting a thermal hydrolysis process (THP) to existing anaerobic digestion (AD) sludge treatment has proven itself globally as a reliable means of increasing treatment capacity and creating a final product that is non-hazardous. This allows for more …
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Thermal hydrolysis and thermal alkaline pretreatment of waste activated sludge: comparison of effects on biogas yield, dewaterability, sludge liquor and cost-benefit analysis
… effect of process conditions (T, pH) of thermal alkaline pretreatment (TAP) and thermal hydrolysis (TH) of waste activated sludge (WAS) on biogas yield increase, dewatering potential of digestate, return load increase and refractory COD using same sludge. Moreover, it was intended to …
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Hydrothermal treatment of sewage sludge under oxidative and nonoxidative conditions
In this doctoral thesis, the application of hydrothermal treatments both oxidative (wet oxidation) and non-oxidative (thermal hydrolysis) to stabilize activated sludge has been studied. Specifically, the purpose of this work was to analyse the effect of these treatments on the chemical, biological …
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Procesos alternativos para el tratamiento a alta presión de lodos edar
… Dissertation: 1.- Introducing of the Advanced Thermal Hydrolysis process (ATH), a novel pretreatment for the Anaerobic Digestion (AD) of sewage sludge: detailed comparative study with the Thermal Hydrolysis (TH) process. The ATH process takes advantage of a peroxidation plus direct steam …
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Anaerobic and Combined Anaerobic/Aerobic Digestion of Thermally Hydrolyzed Sludge
… performance of the Cambi process, a thermophylic hydrolysis process used as a pre-treatment step prior to anaerobic digestion. Thermal hydrolysis, as a pre-treatment to anaerobic digestion increases the biological degradation of organic volatile solids and biogas production. The thermal hydrolysis …
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The Economic and Technical Feasibility of the Application of Partial Nitritation Anammox Technology Over Conventional Nitrification Denitrification for the Treatment of Sidestream Liquor at Cape Flats WWTP
… regional anaerobic digestion (AD) facility (Thermal Hydrolysis Process (THP)+AD) at Cape Flats WWTP in South Africa. The study focused on comparing a conventional nitrification denitrification (Modified Ludzack-Ettinger (MLE) configuration) with a novel partial nitritation/ anammox (PN/A) …
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An Investigation into the Mechanisms of Sludge Reduction Technologies
… be broken into four large groups: mechanical, thermal, chemical and biological, although there is often overlap between groups. This research approached the evaluations of these technologies through several methods in the hopes of developing effective tools for predicting the performance of …
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Experimental evaluation of the effect of thermal heat and pressure pre-treatment on primary sludge anaerobic digestion
… et al., 1998). More recently development of the thermal hydrolysis process pre-treatment of sewage sludge has shown great economic and financial potential in terms of; an increased sludge degradability implying more biogas production, improved digestion rate, stable and highly efficient digester, …
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Evaluation of Sewage Digested Sludge Conditioning and Dewatering Through Qualitative and Quantitative Laboratory Methodologies Towards Process Monitoring
… more specifically on evaluating the impact of thermal hydrolysis as a pre-treatment to anaerobic digestion (AD) of mainly secondary sewage sludges (Advanced AD, AAD plants) in comparison with conventional mesophilic AD (CMAD) on conditioning and dewatering of the digestate, as this knowledge …
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Extraction, characterisation and application of gelatin from chrome-tanned leather waste
… shavings in a one-step process, through thermal and chemical hydrolysis, using the hydrolytic agents ammonia, sodium hydroxide and acetic acid. The gelatin obtained through thermal hydrolysis exhibited better properties, in terms of gel strength, melting point, swelling and thermal …
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Carbon-efficient Wastewater Treatment Through Resource Recovery, Process Intensification, and Partial Denitrification Anammox
… and resource recovery technique, namely thermal hydrolysis pretreatment (THP) enhanced anaerobic digestion (AD), was experimented to compare the efficiencies between thermophilic and mesophilic AD when integrated with THP. To sum up, this dissertation not only advanced our understanding …
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