Thursday, August 17, 2017

4 Tips for Choosing the Best Digester Cleaning Contractors

Digester Cleansing is quickly becoming a discrete business niche within the Anaerobic digestion market.

In the UK six firms actively market their digester cleaning service.

The build-up of grit and debris in biogas plant reactors is all too often being discovered. Undoubtedly this negatively influences the procedure of anaerobic digestion.

It can drastically reduce biogas output, and reduce the income from a biogas plant.

As even more Biogas Plants come on-stream, and existing plants age. the need for digester cleansing is rising.

The sensible, anaerobic-digestion plant driver, will certainly look for to select a specialist digester cleaning service provider.

The biogas plant operator will normally desire the professional digester cleansing service provider to move ahead quickly, and also as rapidly as feasible, to clean-out their bothersome digester container, or storage tanks.

Yet, all digester cleansing tasks hold a lot of prospective threats for injury or even death.

All confined space access, as an example, will certainly call for to be done to the highest possible health and safety standards. To prevent either explosion or asphyxiation, or perhaps drowning.

All of this needs a high degree of experience, comprehensive security training, as well as obviously, tools that is created to get the work done the proper way.

So, guarantee that the cleansing service provider has the right equipment and properly trained staff to utilize it.

Ensure that job will certainly be properly monitored as well as abide by all regional health and safety laws.

The competent cleaning contractor will use special, high powered vacuum trucks along with mobile screening, and water therapy devices to refine the waste water and also solids, for secure disposal.
Ensure that the Cleaning Contractors recognize all local water release top quality restrictions, as well as have consisted of for conformity in their cost.

Celvac Environmental Supplies Digester and also Storage tank Cleansing UK Wide.

Contact Celvac at: www.celvac.co.uk

Anaerobic digester types - Wikipedia
https://en.wikipedia.org/wiki/Anaerobic_digester_types
The following is a partial list of types of anaerobic digesters. These processes and systems ... Appropriate technology · Clean technology · Environmental design · Environmental impact assessment · Sustainable development · Sustainable ...
Digester - Wikipedia
https://en.wikipedia.org/wiki/Digester
A digester is a huge vessel where chemical or biological reactions are carried out. These are used in different types of process industries.
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Sunday, August 13, 2017

Anaerobic Digester Cleaning - Why Clean? Plus Biogas Tank Pumping Contractors

Digester Cleaning - Why Do it?

The most common reason for anaerobic digestion plant digester cleaning by Digester Cleaning Contractors, is to restore digesters to optimum biogas output.

However, it may also be necessary to empty digester tanks simply to inspect them for wear or corrosion, and cleaning may also be needed in order to repair leaks.

When digester tanks are drained there will normally always be a lot of grit, stones, and general trash left in the bottom.

This will need to be removed, and doing this is usually considered to be a specialist job. The reason why the digester operator is well advised not do this using in-house staff is normally due to the health and safety hazards involved.



 It is encumbent upon all biogas plant operators globally to ensure that the digester cleaning contractors awarded this work are properly experienced and apply all local regulations both in connection with their work on-site, but also act responsibly to dispose of the materials which are removed from digester tanks during cleaning.
Some older biogas tank installations have to be emptied before worn out mixers and other internally fitted equipment can be replaced.

Celvac's Mobile Digester Cleaning Rig


In the UK and Europe the ATEX Regulations apply to digester tanks, due to the potential for there to be explosive biogas in digester tanks after emptying. Each EU country has its own daughter regulations which apply the ATEX Directives in member states. In England and Wales the ATEX Directive is applied within the DSEA Regulations.
In the US the The National Institute for Occupational Safety and Health (NIOSH), is the point of reference for ensuring safety during these works.

A common reason for anaerobic digestion plant digester cleaning by Digester Cleaning Contractors, is to restore digesters to optimum biogas output, however, it may also be necessary to empty digester tanks simply to inspect them for wear or corrosion, and cleaning may also be needed in order to repair leaks.
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CLICK HERE: http://anaerobic-digestion.com/digester-cleaning-contractors/
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More Information about digester cleaning:
Digester Cleaning - GTS Maintenance Limited
www.gtsnitrogenservices.co.uk/digester-cleaning
Using silt separation equipment, we are able to carry out effective digester cleaning, while preventing fine materials being carried over. Contact us on 01773 ...
Digester Tank Cleaning, Wastewater Digester Cleaning | Digester ...
www.caryloncorp.com/digester-cleaning.html
Overloading, lack of adequate oxidation time, loss of gas recovery, or invasion of crustacea, grit and trash, can cause a wastewater digester to function at only a ...
Digester Cleaning (inside cone of Digester) - YouTube
? 9:05
https://www.youtube.com/watch?v=boZ07HLYJDs
29 Dec 2009 - Uploaded by Vergil McGrath
North American Digester Cleaning Services is performing a Digester clean-out. Video is shot from manhole of ...
Digester Cleaning - Synagro
www.synagro.com › Offerings
Synagro can serve your cleaning and servicing needs for aerobic and anaerobic digesters, aeration basins, storage tanks and other municipal and industrial ...
Digester & Sludge Tank Cleaning | Burch Hydro Inc.
burchhydro.com/Services/Digester-Tank-Cleaning
Digester and Sludge Tank Cleaning Services. Removal of residual sludge from digesters and other storage and process tanks can often be unexpectedly ...
https://en.wikipedia.org/wiki/Anaerobic_digestion
Anaerobic digestion is a collection of processes by which microorganisms break down ... Anaerobic digesters can also be fed with purpose-grown energy crops, such as maize. ..... gas scrubbing and cleaning equipment (such as amine gas treating) will be needed to process the biogas to within regionally accepted levels.
Anaerobic digester types - Wikipedia
https://en.wikipedia.org/wiki/Anaerobic_digester_types
The following is a partial list of types of anaerobic digesters. These processes and systems ... Appropriate technology · Clean technology · Environmental design · Environmental impact assessment · Sustainable development · Sustainable ...
Digester - Wikipedia
https://en.wikipedia.org/wiki/Digester
A digester is a huge vessel where chemical or biological reactions are carried out. These are used in different types of process industries.
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Tuesday, August 08, 2017

Agricultural Farm Slurry Pumps and Pumping - Save Money with Borger and Gissing FE

We are pleased to be able to report that highly significant savings have been achieved in agricultural slurry pumping costs at a farm-based AD Plant in Lincolnshire, as reported by Borger Pumps in combination with their agricultural products distributor Gissing FE.

 Watch our video below, or read the written article below, and we think that you will agree that this seems to be exactly what has been done by a clever combination of skills.



It's a combination of pump specialist Borger's skills, and the practical application of know-how by Gissing FE, made possible by an in-depth appreciation of what the farmer needs.

 This has reportedly made great savings by getting advanced pump technology work on the ground for the farmer. In fact, they do seem to have worked a bit of magic, with this trailer mounted product!

The trailer mounted pump system and Bioselect Slurry Separator (also known as a Digestate Separator ) can be moved easily to where it is needed, and the case study farm businesses previous problems with high maintenance and the need to run multiple centrifugal pumps to achieve necessary high pressures, appear to have been solved. Solved with a low maintenance and low running cost solution.

 However, the exact methods used are quite complex, so we recommend that you either watch the video above, or read the article below.

Gissing's custom-built slurry pumping container system with Borger's pumps, BioSelect Separator, and macerator,


If, after watching one, you are still in need of an understanding of some of the finer points, we suggest that you watch and read both.

There are a lot of positives to take-in before fully understanding this press release. Press Release:

Big Agricultural Slurry Pumping Savings Achieved at Farm-Based AD Plant

A Borger macerator and two pumps from Borger are helping provide significant agricultural slurry pumping and handling savings at a farm-based AD plant in Lincolnshire.

Part of a custom-built trailer system designed and built by Gissing FE, exclusive distributors of Borger’s equipment for the UK agricultural market, the macerator handles digestate from the farm’s lagoon, whilst the new rotary lobe pumps have replaced inefficient centrifugal units.

Requiring just the one generator to power three electric motors, Gissing’s space-saving (20’ by 15’, including pipework) container system reduces emissions for a spreading operation that would usually need two to three large tractors, plus the diesel and manpower to go with it.
“Previously,” said Jason Gissing, the farmer had to have three centrifugal pumps in line, which with three lots of fuel, was very inefficient.  The impellers on this design of pump will only spin so fast without being able to handle the digestate from the AD plant – and they were also heavy on wearing parts and very time-consuming to service." “However, with the self-priming Borger pumps”, he added, “they hold their pressure much longer to supply a higher volume of slurry – and with their Maintenance-In-Place design, are much, much easier to service – half the time or less than the centrifugal pumps”.
To further benefit the farm’s AD plant, Gissing has also designed its bespoke container system so that it can be utilised for spreading as well as stirring the lagoon.

The Borger pumps can be started, stopped, revved up and down – all from the operator’s cab – from where the driver can also see what flow rates are being achieved, and if necessary, divert.

 Gissing’s experience in the UK agricultural market goes back to 1938.  The company is a fourth-generation family-owned and run team of specialists.

 Borger is owned and run by its founder Alois Börger (who began the company almost 40 years ago), together with his family. In addition to its pumps and macerators,

Borger also supplies its BioSelect Separator for the AD/agricultural market.  The Separator has throughputs up to 150m3/h, and can be very easily integrated into an existing system or used as a mobile separator (trailer based).

via Börger UK Limited - 01902 798977

email: uk@boerger.com

Advances in Agricultural Slurry Pumping Just One Example of UK Anaerobic Digestion Industry Innovation

While the UK anaerobic digestion industry is lacking in government support, as we have reported previously in this blog, and although badly in need of decisions on funding such as the Renewable Heat Incentive (RHI), it can still innovate.

This Press Release once again shows that there is still enormous potential for the anaerobic digestion industry to reduce its biogas production costs, and as it reduces its overheads and passes a proportion of that on to its energy customers, its cost competitiveness with traditional fossil fuel based fuels will improve.

 All that is needed is for some short term funding from the UK government to provide the industry with enough confidence to continue investing in technology advances of the sort we see in this press release, and the future of AD will expand greatly.

 There are admittedly some current problems with availability of some organic feedstock materials, however, there are also many untapped organic feedstock sources which will come available as the cost of anaerobic digestion falls and further innovation, and thus efficiency improvements take place. 

There has also been an explosion in academic research in AD in the last 5 years, new AD processes have been shown to be viable and many variations on existing practices have been researched and shown to have potential.

Very little of that work has yet flowed into the AD industry, and given time, it will do so.

 But, very often it is the basic solutions once achieved in what may look like an obvious and simple progression, after they have been done, that can have as big an impact as any number of academic reports.

 It is very possible that what we have seen here in Gissings trailer-mounted Borger equipment is an example of that.

An example of the sort of practical advances which bring the biggest results. In this case study, we think that enabling the system to be run off a generator and used almost anywhere on the farm brings the practicality of the Borger equipment up to a new level of usefulness.

We think that what we have seen confirms the value of the agricultural slurry pumping savings reported at a farm based AD plant, as reported by Borger working with with Gissing FE.

Saturday, August 05, 2017

Digestate Separation Using the Borger Bioselect Digestate Separator

In this article we suggest the five top Advantages of Digestate Separation using the Borger Bioselect digestate separation technology, available from manufacturer Börger GmbH, Borken-Weseke, Germany.

What are Borger Bioselect Digestate Separators?

Borger Bioselect Digestate Separator system is achieved using the proven system for digestate pumping, storage, and separation offered by this well-established company.



The Borger Bioselect separator brings to all AD Plant Operators the ability to separate solid fibrous digestate leaving the biogas reactor from the liquid, reliably and cost-effectively.

WHY SEPARATION?

1. Separating the solid fibres which leave the biogas reactor, from the liquid portion of digestate means that overall digestate storage capacity needed at the AD plant is reduced during the maturation period.
2. New uses emerge for both liquid and solid digestate. The separated solid is used by some as an energy source, but usually it is left in windrows for a period before being used as a soil improver and spread back onto the land
3. The Solid Phase can be dewatered to an optimum water content for use as bedding for cattle
4. Liquid Phase is most often used as a fast-acting crop fertilizer, and is easier to sell off-farm after separation.
5. The Liquid phase can then be injected into the soil, meaning no possibility of etching damage to the plants.

WHY NOT FIND OUT MORE ABOUT THE 'BORGER BIOSELECT' DIGESTATE SEPARATION SYSTEM?

The Borger Bioselect digestate separator is a purely mechanical device with low maintenance requirements and needs no chemicals to run, simply switch the system on and start separating!

What Others Are Saying About the Borger Bioselect Digestate Separator - A Web Roundup

The Bioselect BS is a combination of the separation machine and two Rotary Lobe Pumps. These three drive units are joined with a special control unit with various control and safety components.
The separator is load-triggered. The feed pump only conveys the volume which the Bioselect BS is able to process. The high density solids discharge pump determines the degree of thickness. via Pandct.com

“We had a great response to this new product at last year’s show”, said Borger UK’s Managing Director, David Brown, “so it’s time now to give it centre stage. AD operators and farmers seem to like it for the throughputs (up to 60m3/h) and because it can be very easily integrated into an existing system or used as a mobile separator”.
Combining a separator and two Maintenance-In-Place (MIP) Borger rotary lobe pumps, the Bioselect separator is load-triggered, whilst the feed pump ensures that volumes do not exceed capacity. The high density solids-discharge-pump determines the degree of thickness, so the user can (for example) thicken 4 per cent dissolved solids (DS) content liquid into 12 per cent DS to make it suitable for a tanker.
https://www.pinterest.com/pin/121597258672786521/
The Börger Bioselect Separator provides efficient separation technology. Using a purely mechanical process, liquid parts are separated from solid parts in the medium (such as digestate or liquid manure).

The installation options of the Börger Bioselect are as versatile as their requirements. Whether attached to a simple wall bracket, installed on a movable frame with an upstream macerator or as a mobile version with a conveyor belt – the application options of the Bioselect are unique. via AgricultureMachineryBusiness.com

Friday, August 04, 2017

How to Stop Climate Change with Biogas from Sea Kelp Cultivation


How farming giant seaweed can feed fish and fix the climate

Seaweeds can grow very fast – at rates more than 30 times those of land-based plants.



Because they de-acidify seawater, making it easier for anything with a shell to grow, they are also the key to shellfish production. And by drawing CO₂ out of the ocean waters (thereby allowing the oceans to absorb more CO₂ from the atmosphere) they help fight climate change.

The stupendous potential of seaweed farming as a tool to combat climate change was outlined in 2012 by the University of the South Pacific’s Dr Antoine De Ramon N’Yeurt and his team.

Their analysis reveals that if 9% of the ocean were to be covered in seaweed farms, the farmed seaweed could produce 12 gigatonnes per year of biodigested methane which could be burned as a substitute for natural gas.

The seaweed growth involved would capture 19 gigatonnes of CO₂. A further 34 gigatonnes per year of CO₂ could be taken from the atmosphere if the methane is burned to generate electricity and the CO₂ generated captured and stored.

This, they say:

…could produce sufficient biomethane to replace all of today’s needs in fossil-fuel energy, while removing 53 billion tonnes of CO₂ per year from the atmosphere… This amount of biomass could also increase sustainable fish production to potentially provide 200 kilograms per year, per person, for 10 billion people. Additional benefits are reduction in ocean acidification and increased ocean primary productivity and biodiversity.

Nine per cent of the world’s oceans is not a small area. It is equivalent to about four and a half times the area of Australia.

But even at smaller scales, kelp farming has the potential to substantially lower atmospheric CO₂, and this realisation has had an energising impact on the research and commercial development of sustainable aquaculture.

But kelp farming is not solely about reducing CO₂. In fact, it is being driven, from a commercial perspective, by sustainable production of high-quality protein.How farming giant seaweed can feed fish and fix the climate via How farming giant seaweed can feed fish and fix the climate - Reddit: Futurology

Now, I am taking a bit of licence here by including this summary because the author is using the term biomethane as being synonymous with biogas (as most people do in India - the commentator is an Indian Academic), however if, rather than using this energy as electricity it was used to provide CNG (compressed natural gas) also called liquefied renewable natural gas (RNG) it would be even more effective in reducing climate change.

The above is a Reddit comment which summarises the following article:

Bren Smith, an ex-industrial trawler man, operates a farm in Long Island Sound, near New Haven, Connecticut.

Fish are not the focus of his new enterprise, but rather kelp and high-value shellfish. The seaweed and mussels grow on floating ropes, from which hang baskets filled with scallops and oysters. via theconversation.com

More Information about how to reverse climate change:

100 Practical Ways to Reverse Climate Change - National Geographic
news.nationalgeographic.com/.../climate-change-global-warming-drawdown-hawken/
28 May 2017 - When National Geographic caught up with Hawken at his home in San Francisco, he explained why climate change is a gift, not a curse; why ...

A Formula to Reverse Climate Change — The Carbon Underground ...
https://thecarbonunderground.org/the-formula-is-easier-than-you-think/
The data suggest strongly that we can actually reverse climate change, not simply slow it down. Lots of data. And while different studies may use different ...

Regenerative Development to Reverse Climate Change Workshop ...
thecommonwealth.org/.../regenerative-development-reverse-climate-change-workshop...
What more can we do to tackle the challenge of climate change? Is it possible to reverse its impact? Leading scientists and climate experts will meet to explore ...
Climate change mitigation - Wikipedia

https://en.wikipedia.org/wiki/Climate_change_mitigation
Climate change mitigation consists of actions to limit the magnitude or rate of long-term climate change. Climate change mitigation generally involves reductions ...

Greenhouse gas ... · Methods and means · By sector · Costs and benefits
...million years ago by flourishing marine phytoplankton; reversal of global warming 49 million years ago by 800,000 years of arctic azolla blooms ...
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