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Kombi Hydrolysis
Feeding, Hydrolysis, Shredding
PRE in the
Biogas business
since 1995
Featuring
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Patented innovation for a variety of input materials
Feeding and hydrolysis in one system
No automatic feeding system – no mechanical wear
Typical feedstock (solid manure, poultry manure, straw, grass,waste, etc)
Repeated hydrolysis phase increases destruction rate
The separate hydrolysis stage increases biogas yield
Digester role effectively becomes that of second stage digestion
Increased biomass to biogas conversion through integrated ultrasonic treatment
2014 | 2015 Innovation & Research Award
German Stifterverband Award Winner
The German Research Foundation (Stifterverband)
granted the award for Innovation & Research to
Plannungsbüro Rossow Gesellschaft für
Versorgungstechnik mbH
Patented Kombi Hydrolysis * from PRE
hydrolysis. The digester is now continuously fed with hydrolyzed substrate that perfectly matches the gas production
requirement. The biological hydrolysis continues to run until
the next feeding procedure starts. And gas released at the
filling stage, as well as the gas produced by hydrolysis, is
fed into the biogas tank.
Biogas plant, Blumberg, Germany
Overview
digester
What is Kombi Hydrolysis?
Combined hydrolysis consists of three chambers: a feeding
chamber, a hydrolysis chamber and a pumping chamber.
Chamber sizes and how they are arranged can be adapted
to match the operating environment. The main components
are a chopper pump, an agitator and a sensor-controlled
inlet.
How does the feeding system work?
Typically, the first chamber of the hydrolysis tank is loaded
with the complete range of solid substrate components on
a daily basis - thus avoiding the need to invest in an automatic feeding system.
How does Kombi Hydrolysis? work?
The combined hydrolysis unit includes functions such as substrate
feeding, mechanical shredding, hydrolysis and variable rate
loading of the digester.
After the tank is filled, and the inlet sealed tight,
through co-maceration with the contents of the pumping
chamber, the solid substrate contained in the vessel is
brought into intimate contact with active microbial biomass.
As gradual homogenization of the substrate components
takes place under the action of the agitator/cutter and
pump, the pulped material is heated to a preset temperature.
The pulp is now ready for pumping, and the chopper pump
removes it forcibly through a chamber separated from the
tank inlet, shredding the coarse components in the pulp,
and dissolving agglomerated masses, while pumping the
substrate back to the middle chamber.
In the following stage, the microorganisms actively promote
Digestate storage tank
CHP I
CHP II
Flare
Kombi Hydrolysis
stall pump
Cyclical operation
For the purpose of dilution, and inoculation with active
microorganisms, digestate is decanted at regular intervals from the digester, thereby constantly exposing substrate to hydrolytical influences and gradual decomposition.
Ultrasonic treatment
Through the disintegration and dissolution of fibrous substrate constituents, the Wave Box patented by PRE and Ultrawaves GmbH improves biochemical hydrolysis efficiency,
and induces up to 20% additional methane production from
organic material. The Wave Box is continuously fed from the
digester, or the digestate storage tank.
System upgrades
Existing biogas systems can be upgraded by integrating a
combined hydrolysis unit. Typically an upgrade is advisable
when a biomass feeding system needs to be refurbished; an
auxiliary hydrolysis stage is required to increase the biogas
yield; or there is a change of input materials to solid manure, grass, or the like.
*patent pending
Rossow Energy Consultants (PRV)
PRV-Planungsbüro Rossow
Gesellschaft für Versorgungstechnik mbH
Germany
Lindenhof 2c • 17033 Neubrandenburg
Telefon:
+49 3 95 / 707 47 09
Fax:
+49 3 95 / 778 21 38
E-Mail:
nr@rossow.de
Internet:
www.rossow.de
Rossow Renewable Energy Consultants (PRE)
PRE-Planungsbüro Rossow
Gesellschaft für erneuerbare Energien mbH
Germany
Lindenhof 2c • 17033 Neubrandenburg
Telefon:
+49 3 95 / 379 51 780
Fax:
+49 3 95 / 379 51 781
E-Mail:
info@pre.rossow.de
Internet:
www.pre.rossow.de
Ireland & UK
Farmgas Community Partners Ltd.
IMI Business Park
Sandyford Road • Dublin 18 • Ireland
Tel.: +353 (0) 1 901 2622
E-mail.: info@farmgas.ie
Web: www.farmgas.ie