18 September 2015

Anaerobic Digestion News: 5 Undeniable Advantages of Anaerobic Digestion the...

Anaerobic Digestion News: 5 Undeniable Advantages of Anaerobic Digestion the...: The UK anaerobic digestion industry has done very well in recent years, with a huge growth in the number of AD Plants. But new UK government cut-backs in the longstanding support mechanisms for AD projects appear to be just the beginning.

Why is the UK government apparently set on abandoning AD, when it is a success story about an industry which deserves support far more than many others in the energy sector?

All we can think is that the UK government is cutting back on support for the industry, because it's not aware of the many compelling reasons why AD should be gaining more, not less, government support.

The advantages of anaerobic digestion are real, and substantial, and yet these benefits seldom, if ever, get the exposure they deserve.

Everyone who knows about AD should be reading these 5 benefits and shouting about them from the rooftops, and if you don't know about this we also recommend you follow this link (click on the header above) and read the article..

07 July 2015

Major Energy Savings for Fully Mixed Anaerobic Digestion Plant Operators Confirmed by University Study


University Study reveals more methane and major energy savings for AD operators with Landia’s GasMix digester mixing system

The University of Aarhus has revealed important findings from an extensive study into the performance of Landia’s externally-mounted GasMix system, showing that it increases methane production by almost 11% in a digester treating agricultural residues.

The study also showed that viscosity was decreased by more than 31% when Landia’s GasMix was used in a heat exchange tank treating agricultural residues prior to anaerobic digestion.

This greatly reduced viscosity input from the heat exchange tank allowed for a 12.5% reduction in downstream reactor mixing times, equivalent to a saving of 210 kWh per day in electrical consumption.

Conducted partly at the Madsen Bioenergi plant in Skive, which every day treats approximately 285 tonnes of cattle/pig slurry, deep litter manure and maize silage, the Study also looked at the LBT Agro biogas plant near Hjørring – as well as the Energi Viborg Spildevand A/S wastewater treatment plant near Viborg (all three plants are in Jutland, Denmark).

Steen Buhl Larsen, Landia’s Managing Director, commented:
“Our GasMix customers have repeatedly informed us of significant increases in their site’s gas yields – and now we have a detailed Study – painstakingly compiled over several months - to show just that” 
He added:
“AD operators have a golden opportunity to produce more gas, yet at the same time, dramatically reduce their energy consumption. These factors are in addition to the fact that because everything is outside the tank, GasMix is much easier to service, with no downtime”. 
Using a unique combination of gas and hydraulic mixing principles to provide efficient mixing of tanks, Landia’s GasMix is already installed at numerous AD plants worldwide, including the UK, Denmark, Germany, China and the U S, where it is also proving to be ultra-reliable. Established in 1933, Landia designed GasMix with the chopper pump (it invented in 1950).

External knife blades reduce particle sizes in a conventional hydraulic mixing method, whereby material is drawn from the bottom of the tank by a centrifugal pump. In this hydraulic mixing mode, the material is pumped back into the tank base through the jet nozzle, a tube that is narrower than that on the upstream side of the pump.

This ensures that the material enters the tank at high velocity, causing a vigorous mixing of the tank contents, including heavy material such as stones that typically tend to accumulate at the bottom of these tank designs. Landia’s GasMix also operates in a second mode of mixing. Here, the centrifugal pump output is diverted upwards to an injection nozzle located in the wall of the tank. Before the slurry from the centrifugal pump enters the nozzle, a pipe from the gas headspace in the top of the tank is connected at a right angle to the slurry pipe.

This allows headspace gas, in particular biogas when the tank is used as a digestion tank, to be drawn into the slurry stream by the venturi principle.

 *The Study was undertaken by Alastair James Ward, Adjunkt, Institute for Ingeniørvidenskab, Aarhus University, Denmark.


For more information visit www.landiagasmix.co.uk

12 June 2015

Up to £10k Anaerobic Digestion Grant for English Farmers

Thinking about starting a biogas (Anaerobic digestion) plant on a farm in England? Then check out this article by following the link to see if you qualify:


"The On-farm Anaerobic Digestion Fund offers farmers in England a grant of up to £10,000 to undertake a feasibility study and business plan to investigate the potential of AD on their farm. 
 The fund also offers capital loans of up to £400,000 (or a maximum of 50% of the capital cost). To be eligible for the fund, the AD plant must be fed predominantly on farm wastes such as manures and slurries and have an output of less than 250kW. 
The fund is open until 31st March 2016 and applications for grants and loans are assessed on a rolling basis."

  More information is here.

Anaerobic Digestion News: 10 Easy Biomethane Lessons

Anaerobic Digestion News: 10 Easy Biomethane Lessons: Lesson 1. The Real Biomethane Definition The definition of biomethane is quite a difficult one, because there are competing definitions....

25 May 2015

Find Out How Many US Wastewater Plants Use Anaerobic Digestion of their Biosolids Sludge

The high level of popularity of sludge digestion systems which use the anaerobic digestion process is shown in the info-graphic image which we provide below:
(This image is available for anyone to embed in their website. Click on the image and copy and paste the embed code you will find at the bottom of that page.)

29 April 2015

Anaerobic Digestion to be Detroit Zoo's Newest Attraction and to Use Crowdsourcing

Anaerobic Digestion to be Detroit Zoo's Newest Attraction and to Use Crowdsourcing

"The Detroit Zoological Society is the first in the U.S. to take advantage of Anaerobic Digestion by using the waste of zoo animals. It launched a campaign for its Detroit Zoo last week, hoping to at least save $80,000 in the facility’s energy costs, as well as about $40,000 in waste disposal."

22 April 2015

Anaerobic Digestion News: Clever Re-use of Pre-cast Concrete in World War II...

Anaerobic Digestion News: Clever Re-use of Pre-cast Concrete in World War II...: Whites Concrete has recently provided an innovative storage solution for the stockpiling of silage for use at a UK biogas plant. By choosing pre-cast concrete walls to their special design, disruption of the World War II Hanger in which they were located was put at an absolute minimum.

Click the link above to see more.
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