digester system Articles
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Dublin - Ringsend - Case Study
Client: Celtic Anglian Water Solution: CambiTHP - B12 Ringsend The WWTP at Ringsend Dublin was originally operating a two train drum drying systems for drying the raw primary sludge to meet the requirements of pasteurisation in Ireland. The plant was extended by the addition of SBR biological treatment reactors to the existing primary treatment plant. Therefore the quantity of sludge was ...
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Three years of operation of North America's first nutrient recovery facility
The first full-scale nutrient recovery installation in North America became operational in May 2009 at the Clean Water Service's Durham Advanced Wastewater Treatment Plant in Tigard, Oregon. Recovering ammonia and phosphorus from the dewatering side stream as struvite has a positive impact on plant operations. Significantly reducing the phosphorus recycle lowers the phosphorus loading on ...
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Why Is There Diversification of Anaerobic Digester Designs?
Engineers consider a range of factors — including the waste to be treated and the desired outcome — when designing an AD system Anaerobic digestion (AD) is a well-established technology for the treatment of organic waste streams. It harnesses the power of microorganisms in an oxygen-free environment to decompose organic matter, generating renewable biomethane as a byproduct and ...
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Two-phase anaerobic digestion for class a biosolids at moccasin bend WWTP
The Moccasin Bend Wastewater Treatment Plant (WWTP) provides treatment for the City of Chattanooga, Tennessee and the surrounding region. The City has completed upgrades to the solids handling facilities to treat and dewater the primary solids and waste activated sludge (WAS) from the WWTP. This paper summarizes the process to handle the primary solids and the start-up process. Primary solids ...
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Commissioning and re-design of a ”class a” thermal hydrolysis facility for pre-treatment of primary and secondary sludge prior to anaerobic digestion
ABSTRACT Thermal hydrolysis of sewage sludge as a pretreatment technique for producing a “Class A” sludge, with existing (or new) mesophilic anaerobic digestion systems are presently being considered for wastewater treatment plants in the USA and Canada. In Europe, a number of innovative hydrolysis systems have been installed or are planned. One technology sold under the trade name CAMBITM has ...
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Robust Systems for Optimal Treatment - Big-Park – Case Study
Overview Big Park Domestic Wastewater Improvement District in Arizona had constructed a new 500,000 gallons per day biological wastewater treatment system in 1997. As time passed, the aging plant was unable to keep up with increasing demands. Challenges In 2012, the District started working with Sunrise Engineering to find a solution that would work in their existing plant. Sunrise Engineering ...
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Molecular Chemical Grinder Improves Digestion in Sludge
Municipal wastewater treatment plants (WWTPs) can reduce the costs and liabilities of sludge handling and disposal and increase their organic solids conversion rate with the Advanced Fluidized Composting (AFC) Process or the Advanced Fluidized Co-Digeson & Co-Generaon (AFC2) Process from BioConversion Soluons, LLC (BCS). The conventional sludge treatment techniques of aerobic and anaerobic ...
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Microplastics Found in Human GI Tracts
In small study, plastic particles were found in bodies of all participants A recent study may have been small, but its results came as a big surprise to some. Lead author Dr. Phillip Schwabi of the Medical University of Vienna and Dr. Bettina Liebermann of Environment Agency Austria found microplastics particles in the GI tracts of every human participant in the study, which the researchers ...
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Inflation Reduction Act Expands Anaerobic Digestion Tax Credits
Legislation has potential to boost biogas use across the US When anaerobic digestion is used to process wastewater with a high organic load, it produces energy in the form of biogas, a combination of methane, carbon dioxide, and other gases. In the United States, there is huge potential for expansion in anaerobic digestion, but even though the energy produced can more than pay for the treatment, ...
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Top Applications of Shortcut Nitrogen Removal
Skipping a step streamlines treatment of a range of high-ammonia wastewater sidestreams Over the years there has been an ongoing quest to make wastewater nutrient removal more efficient than traditional activated sludge treatment, which is effective but uses a great deal of energy, carbon, and oxygen. There has been progress, starting with full nitrification-denitrification and simultaneous ...
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EU Aims for Circular Economy by 2050
Decentralized water and wastewater solutions are well positioned to help make the move to a carbon-neutral and environmentally sustainable future The European Union’s Circular Economy Action Plan for a fully circular economy by 2050 ranks among the most ambitious environmental targets of any governmental body. In concordance with the 2050 climate neutrality goal of the European Green Deal, ...
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Waste-to-Energy Solutions Improve Sustainability in the Dairy Industry
Converting dairy waste into biogas and other valuable resources trims disposal costs, and saves water and energy Dairy and livestock farmers have been reaping the benefits of converting animal waste into biogas through anaerobic digestion. Now dairy processors are following suit by recycling the organically rich waste that they generate. Instead of discharging waste byproducts into the ...
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Waste-to-Energy Upgrade for Chicken Processing WWTP - Case Study
When one of Italy’s top chicken producers needed to increase production while lowering costs, it turned to Fluence for a waste-to-energy upgrade to its existing WWTP. When one of Italy’s top agro-food processors wanted to expand its operations, it faced some difficult challenges, including reducing operational costs and producing an effluent that would meet strict European Union ...
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Grand Rapids Water Resource Recovery Facility, Michigan US - Case Study
The Grand Rapids Environmental Services Department operates the water resource recovery facility to keep all untreated sewage out of the Grand River in Michigan. The plant collects and treats an average of 40 million gallons of wastewater a day, using state-of-the-art technology in order to process the wastewater in the most sustainable way possible. As the plant is not a utility, it would not ...
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Landfill Gas Clean-up and Upgrading to Hydrogen System
Quadrogen has extensive knowledge of and experience in biogas and landfill gas clean-up systems technology, design and development. Quadrogen’s Integrated Biogas Clean-up System will remove all sulfur species, siloxanes, chlorides, water, oxygen and other impurities from biogas to the parts per billion level required for reliable and long term operation. Quadrogen also has extensive ...
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Removal of fats, oils, & grease (F.O.G.) from grease traps and lift stations by means of advanced oxidation processing (A.O.P.) using the
Scenario: F.O.G. (Fats, Oils & Grease) deposits in both grease traps and lift stations accumulate within a short period of time. Their removal requires high-pressure Vac-Trucks and hazardous chemicals to break down and remove the unwanted build-up. Problem: Several problems occurring because of grease accumulation are: 1.) Clogged sewer lines 2.) Sanitary sewer overflows (SSO's) 3.) Raised ...
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Industrial wastewater treatment is no more optional
The environmental effects of industrial wastewater usage must be considered, not only on the land but also on our environment through water consumption and wastewater disposal. The wastewater from industries worsens groundwater pollution and causes other environmental problems. This reduces the nutrients in groundwater and increases the levels of carbon dioxide in the atmosphere. Furthermore, it ...
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Is It Time To Upgrade and Convert Your SBR?
Is your Sequencing Batch Reactor (SBR) or other activated sludge process in need of a cost effective upgrade or expansion due to it being outdated, overloaded, inefficient or undersized? Have potential changes to your effluent requirements forced you to look at more expensive and complicated alternate wastewater treatment technologies? You don’t have to start over. Fluidyne Corporation, the ...
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Water Environment Research Article
Iron Sponge Reduces Toxic Emissions To control emissions from a cogeneration facility that will use digester gas for fuel, the Sacramento Regional Wastewater Treatment Plant in Elk Grove, Calif., is incorporating iron sponge technology to reduce hydrogen sulfide (H2S) prior to combuston. Reducing digester gas H2S concentrations at this stage will result in lower sulfur oxide emissions in the ...
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Cambi thermal hydrolysis combined with thermophilic/mesophilic digestion - from pilot to full scale application at Hamar Wwtp
ABSTRACTDuring 2001-2003 the city and county of San Francisco completed a two-year pilot study of pre-treatment processes to mesophilic anaerobic digestion for improved biosolids stabilization and production of biosolids suitable for unrestricted reuse (class A biosolids). The pre-treatment options investigated included: A thermophilic (55 °C; TP) process with 5 days hydraulic retention time ...
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