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Biogas production, treatment and utilization in a cost-effective manner with providing higher energy output

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Content Background Basic elements of operation Advantages Experience and referencies

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Background Geometry of digestors at biogas plants from 1990 horizontal bottom part, diameter-height ratio below 1, without digestor roof

Higher dry material content inside the digestors increasing the organic dry material load per 1 m3 volume in order to increase the biogas yield

Biogas treatment and utilization integrated or multi-stage solutions to protect the biogas engines, aiming for higher operational efficiency

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Basic elements of operation Providing the main flow with long axis agitator (slow mixing)

Providing complete mixing in a short time period submersible agitators adjustable vertically along the digestor wall (1, 2 or more pieces depending on the geometry and size of the digestor)

Integrated gas storage integrated with the digestor

gas storage with a double membrane solution

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Process control system own design and implementation based on years of experience

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Biogas treatment Inwatech-designed and manufactured compact biogas treatment (chilling, drying, H2S removal)

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BIOGINWA

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Advantages Larger surface area belongs to a smaller depth, due to which the

biogas bubbles can emerge from the liquid phase faster and more easily

Floating layers can be avoided by adjusting the submersible agitators vertically

A low specific energy intake is sufficient for the complete mixing (16 W/m3)

The high activity of the methanogens may result in a higher efficiency of degradation, which can be provided by the speed and effectiveness of the agitation (190-250 mp)

Due to the larger surface for gas bubbles to emerge and the shorter travelling distance in the liquid phase the chance of foaming is very small

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Each of the agitators inside the digestor can be dismounted separately which provides high mechanical safety. Due to this fact mixing can be maintained even if one of the agitators fails to operate. The stability of the fermentation process will not change and also the number of long-term shutdowns (emptying of the digestors) can be reduced to a minimum or can be fully avoided

Optional elements can be integrated (without the disassembly of the primary structure) in order to be able to recieve other kind of substrates (such as oil, fat, flotates)

The volumetric load of the digestors regarding the specific organic dry material can be even 3,2 kg organic dry material/m3*d

Due to the geometry of the digestor and the mixing technology the average dry material content inside the digestor can be even 11%

Beside liquid phase sludges the digestors are able to recieve and ferment dry consistency substrates (30-40 % dry material content), providing much higher biogas yield

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Effective investment cost:

Lower building costs (method of construction, no need for stairways, integrated gas storage)

Shorter construction work period

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Experience and referencies Design works complex design of biogas plants: 11 pcs partial design of biogas plants (gas treatment and utilization): 6 pcs Construction works complex biogas production and utilization as main contractor: 10 pcs

number of partial works (particularly mixing technology and biogas treatment and utilization) Operation, maintenance, service operation and/or maintenance, service works in 11 plants standing order, renewed annually

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Siófok wastewater treating plant (170.000 PE) – 1 x 2400 m3 + 1 x 1500 m3 digestor, 150+250 kW biogas engines - 2016

Békéscsaba wastewater treating plant (135.000 PE) - 2 x 2000 m3 digestor, 250 kW biogas engine - 2014

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Experience and referencies

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Érd wastewater treating plant (140.000 PE) – 2 x 2000 m3 digestor, 250 kW biogas engine - 2012

Kazincbarcika wastewater treating plant (66.000 PE) – 1 x 1500 m3 digestor, 125 kW biogas engine - 2015

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Experience and referencies

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Experience and referenciesMosonmagyaróvár wastewater treating plant (90.000 PE) – 2 x 1700 m3 digestor, 250 kW biogas engine - 2014

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Experience and referenciesSzeged- Agricultural biogas plant – 2 x 2.700 m3 digestor, 2 x 600 kW biogas engine - 2011

Seini (Romania) - Agricultural biogas plant– 1 x 2800 m3 digestor, 370 kW biogas engine, digestate drying -2016

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Experience and referenciesGyula - Agricultural biogas plant – 2 x 2200 m3 digestor, 500 kW biogas engine - 2009

Csenger - Agricultural biogas plant – 2 x 1700 m3 digestor, 500 kW biogas engine - 2008

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Thank you for your kind attention

and

Have a new economical solution in your country!

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