Digester Articles | Environmental XPRT

McCain - Case Study

Longer life for gas engine after H2S removal Potato processing company McCain in Lelystad, the Netherlands, receives biogas from both the anaerobic water treatment and the solids digester. The biogas - derived from fermenting potato peels - contains high levels of hydrogen sulphide. To prevent corrosion of the gas engine that uses the biogas as a power source, ...

May 25, 2018

By Paques B.V.

Water Use and Reuse in Manufacturing

Efficiency advances in wastewater reuse and desalination are bringing on-site treatment within reach of more manufacturing operations Three factors — climate, overuse, and pollution — are now propelling the manufacturing industry toward a sea change in its water use. Demand for fresh water is high and increasing. The U.S. Census Bureau has estimated that the U.S. ...

May 23, 2018

By Fluence Corporation

New Research Demonstrates Safety of SOIL’s Waste Treatment Process

SOIL is committed to fully treating 100% of the wastes from each and every household EkoLakay toilet – and we take that responsibility very seriously! Our treatment process has been developed alongside global experts and exceeds standards set by the World Health Organization for the safe treatment of human waste. Once the collected waste from ...

Jun. 9, 2018

By SOIL Haiti

Anaerobic Digester

An ultra modern waste-to-energy plant near Chin, Alberta, will be built using Highmark's patented IMUS technology. It will be a multi-feedstock system, capable of digesting potatoes, cattle manure and other nearby waste while killing off pathogens. The whole community will benefit from the Perry family's innovation and forward-thinking stewardship of their century-old farming ...

Apr. 14, 2011

By Himark bioGas Inc

Anaerobic Digest

Wilsonville, Oregon: Food Scraps Digester Proposed An anaerobic digester with capacity to process 50,000 to 70,000 tons/year of commercial food waste is being proposed in Wilsonville by Sustainable Organics Recycling Technology (SORT) Bioenergy. Wilsonville is in the Portland metro area. Currently, a portion of commercial food scraps from the metro area are hauled to the ...

Mar. 1, 2016

By BioCycle Magazine

Anaerobic Digest

Washington, DC: NOSB Considers Digestate Use Petition The National Organic Standards Board (NOSB) of the U.S. Department of Agriculture (USDA) has agreed to consider a petition from Cenergy USA, the makers of Magic Dirt™, to allow use of digestate from anaerobic digestion plants in organic agriculture. Magic Dirt is made from digested dairy manure fibers. The soil amendment products ...

Jul. 7, 2017

By BioCycle Magazine

Determination of sand content in digestate

The biological treatment of separate collected waste becomes more and more important. The composting is still the dominant method of treating this waste, but the anaerobic alternative, the anaerobic digestion, plays an increasing part. In Germany already 15% of the whole capacity of biological treatment plants for separate collected biowaste are of anaerobic digestion (Kern, 1998), because of its ...

Jan. 2, 1999

By ORBIT e.V.

Digester Tank Cover Repair

Digester tank covers are placed on top of wastewater digester tanks and float on top of the liquid inside the tanks. The digester tank cover at this waste water treatment facility experienced corrosion damage over time due to the caustic nature and environment. Instead of a costly ($200,000) replacement, ENESEAL CR was applied after removing the old coating. Thus saving the facility a substantial ...

Jun. 10, 2016

By ENECON Corporation

Innovation Key To Biosolids Digestion

A $400 million project at the Blue Plains Advanced Wastewater Treatment Plant (AWTP) in Washington, D.C., involves building an innovative biosolids management system comprised of a thermal hydrolysis process, four 3.8-million gallon mesophilic digesters (measuring 70-ft tall by 100-ft in diameter) with fixed covers, a cogeneration system consisting of three 4.6-MW Solar Mercu ry 50 gas turbines ...

Oct. 1, 2012

By BioCycle Magazine

The economics of advanced digestion

Abstract Historically, the focus sewage sludge digestion was to stabilise the sludge and reduce the odour emitted. Pathogen reduction, solids destruction and biogas production then became important. In recent years a number of advanced digestion processes have become available which can be added to the conventional digestion process. Initially advanced treatment methods for treating sludge were ...

Dec. 15, 2009

By Cambi Group AS

Assessing the Market for Anaerobic Digestion

The anaerobic digestion (AD) industry is growing rapidly. In the UK there are over 215 anaerobic digesters in operation and more than 100 in planning. Understanding how a market will develop is crucial to any successful venture. A client came to us looking to improve their understanding of the current status and future potential of the AD market in the UK and Ireland. In order to progress ...

Aug. 20, 2012

By NNFCC

Digest of EEA indicators 2014

Environmental indicators are essential tools for assessing environmental trends, tracking progress against objectives and targets, evaluating the effectiveness of policies and communicating complex phenomena to non-technical audiences. The last guide to European Environment Agency (EEA) indicators, published in 2005, focused on the Core Set of Indicators (CSI) (EEA, 2005). Since then, the EEA has ...

Jun. 2, 2014

By European Environment Agency (EEA)

CH#1138 - Anaerobic Digesters

Waste Type: Fats, oils and grease (FOG) in Anaerobic Digesters Problem: FOG waste poses a challenge for most municipal wastewater collection systems and treatment plants. Although fats, oils and grease will biodegrade in an anaerobic digester, high concentrations will tend to 'mat' on the sludge surface, lowering digestion efficiency. This Midwestern municipal facility was no different. The 1.5 ...

Apr. 23, 2007

By Bio-Systems International

Startup of Anaerobic Mesophilic Digesters

Many operators have started up mesophilic digesters, but everyone has differing stories and experiences. This paper is a combination of the startup of several mesophilic anaerobic digesters, with very low seeding to fully seeded conditions. Upper Occoquan Sewage Authority (UOSA) operates the Millard H. Robbins Water Reclamation Plant. UOSA started three anaerobic digesters between August 2000 and ...

Oct. 21, 2006

By Water Environment Federation (WEF)

Anaerobic Digestion—What Are the Economics?

Although solid waste AD facilities are just starting to emerge, haulers and their customers may see some benefits if the development trend continues. A Pro Forma Model objective can be constructed for strategic planning of an anaerobic digestion facility. Anaerobic digestion (AD) of food wastes in the U.S. is a developing market that is poised for continued growth in many regions. ...

Jul. 1, 2014

By Waste Advantage Magazine

Reasonable waste digestion plants

During the last years it became quite clear that in the area of utilisation of organic waste the anaerobic digestion has developed a leading position. This is not only based on its well known advantages:- abhigh rate degradation of organics- abcontained process- ablow emissions- abhigh yield of CO2-neutral produced biogas and high quality compost as its productsbut also on the fact that customers ...

Jan. 2, 1999

By ORBIT e.V.

Facilitating Food Waste Digestion

Increasing volumes of commercial food waste, much of it contaminated or packaged, led digestion facility in South San Francisco to install a depackaging unit. South San Francisco Scavenger Company (SSFSC) and Blue Line Transfer, the facility that handles SSFSC’s recycling and disposal, started up its dry anaerobic digester (AD) in late 2014. Situated at Blue Line’s 11-acre site in ...

May 1, 2018

By BioCycle Magazine

Anaerobic digestion of aliphatic polyesters

Anaerobic processes for the treatment of plastic materials waste represent versatile and effective approach in environmental protection and solid waste management. In this work, anaerobic biodegradability of model aliphatic polyesters, poly(L-lactic acid) (PLA), and poly(ɛ-caprolactone) (PCL), in the form of powder and melt-pressed films with varying molar mass, was studied. Biogas production ...

Feb. 16, 2016

By IWA Publishing

Monitoring of digesters in biogas plants

Renewable sources of energy are gaining steadily in importance. Leading the way is the use of methane gas obtained from fermentation processes in biogas plants. Overloading such plants with excessive biomass may have drastic economic consequences and may even inactivate the biomass, necessitating a cost-intensive restart. Adding too little biomass also has financial consequences, as less ...

Apr. 1, 2007

Golf and a Small Anaerobic Digester

Golf course associations and golf clubs around the world are looking at ways to improve the sport’s environmental criteria. Sustainable developments and low carbon footprint operations are the name of the game. As golf courses use fertiliser for the courses, power for the maintenance machinery, and power for the golf carts, there are many areas where sustainability of the sport ...

Jul. 6, 2016

By SEaB Energy Ltd.

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