Waste Digestion Articles on Environmental XPRT

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.

Designed for generations, water & wastes digest

Nearly 25 years ago, the consulting engineering firm Banner & Associate, Inc. designed an efficient wastewater treatment facility for the city of Madison, S.D., that featured process control, flexibility and treatment efficiency while minimizing operating and maintenance costs. Key to the system was the aspirator aeration system that supplied reliable oxygenation and mixing to the oxidation ...

May 2, 2008

By Aeration Industries International (AII)

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

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

Boulder, Colorado: U.S. Distributed Renewables Forecast Published Navigant Research, a market research and consulting firm in Boulder, recently published the “U.S. Distributed Renewables Deployment Forecast, 2016-2025.” The report notes that deployment of distributed renewables, such as wind, solar and anaerobic digestion facilities, in the U.S. has accelerated in the last ...

Sep. 1, 2016

By BioCycle Magazine

Effect of sodium salt on anaerobic digestion of kitchen waste

The effect of different sodium salt concentration on anaerobic digestion of kitchen waste was investigated. The methane production performance, the corresponding methane production model and sodium salt inhibition model were studied, and the degradation efficiency was analyzed. With the increase of sodium salt concentration, the methane yield and the maximal methane production rate decreased ...

Jan. 22, 2016

By IWA Publishing

GTI Supplies Innovative Cover for Waste-to-Energy Digester

The Customer: LaForge Bioenvironmental operates a waste-to-energy facility in a northwest farming community of New Brunswick, Canada. The system is located on a 1,000 acre (405 hectare) mixed farming operation, which includes the LaForge Holsteins dairy. LaForge planned to expand its 500kW combined heat and power (CHP) system to more than double the capacity by converting an existing holding ...

May 27, 2015

By Geomembrane Technologies Inc. (GTI)

Digester Developers Target Mixed Organic Waste Streams

emerging group of commercial companies see a viable business opportunity in North America around building, owning and operating larger scale anaerobic digestion (AD) facilities to process mixed organic waste streams. In some instances, the projects being proposed and constructed only include anaerobic digester operations. In others, there is a combination of digestion with back-end ...

Aug. 1, 2011

By BioCycle Magazine

European Experiences With the Treatment and Digestion of Bio-Organic Waste

In the area of waste management environmental awareness has essentially increased and according technologies got more and more accepted in Europe within more than ten years now. During all the time BTA has gathered experiences by developing and realising flexible concepts for biowaste treatment plants of different design and capacities for the treatment of various waste streams: full scale plants ...

Jan. 1, 2000

By BTA International GmbH

Anaerobic Digestion technologies for the treatment of Municipal Solid Waste

Anaerobic Digestion (AD) of Municipal Solid Waste (MSW) is used in several regions worldwide and systems span a range of design options including wet, dry, thermophilic, mesophilic, batch, continuous, single-stage, and multi-stage configurations. This paper reviews a number of commercial and emerging solid waste digestion systems discussing performance and costs. Systems yield 250?710 m³ of ...

Dec. 12, 2011

By Inderscience Publishers

Post-composting techniques of digested household waste

Compost making is a method of recycling whereby organic waste is broken down to organic soil with the help of oxygen demanding microorganisms. There are different ways of making compost. Some require more labour and an exact procedure has to be followed; others neglect the precise procedure, which has advantages and disadvantages. Organic material, including toilet waste, can also be recovered to ...

Sep. 19, 2007

By Inderscience Publishers

Anaerobic digestion system for dairy farm wastes

On of the critical problems in dairy farms is the management of animal wastes. The first negative impact of manure and other animal wastes is emission of malodor and air pollutants and furthermore attraction of insects that may correspond to spreading of pathogens and emerging epidemic diseases. The secondary impacts of un-controlled release of manure and animal wastes are pollution of soil and ...

Sep. 1, 2009

Waste treatment Wernsing Anaerobic Digestion Plant (Germany)

Wernsing biogas plant Addrup The Wernsing biogas plant was one of the first biogas weser-ems plants to treat waste from food industry since its commission in 2001. Up to 200 tonnes of white cabbage and potatoes waste are used as main input material per day. In addition to the biogas plant, the facilities owned by the Wernsing group include a waste water treatment plant to treat the sewage ...

Oct. 22, 2014

By bwe biogas-weser-ems GmbH & Co. KG

Solid Waste District Pilots Dry Fermentation Digester

Special events, restaurants and other commercial businesses in the Monterey region of California have found a way to close the compostable waste loop and produce usable electricity at the same time. The electricity is produced via dry fermentation anaerobic digestion (AD) units that came online this spring at the Monterey Regional Waste Management District (MRWMD) in Marina. The pilot AD ...

Nov. 1, 2013

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

Bio-fuels- Anaerobic digestion

Anaerobic digestion is a series of processes in which micro organisms break down biodegradable material in the absence of oxygen. It is widely used to treat wastewater sludges and organic (agricultural) wastes. As part of an integrated waste management system, anaerobic digestion reduces the emission of gas into the atmosphere. Anaerobic digestion is a renewable energy source because the ...

Sep. 29, 2008

By Triangle Ltd

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.

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

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

Subscribe to our eBulletins

Add Supplier Profile