[Digestion] Nitrogen in effluent

Michael Köttner m.koettner at biogas-zentrum.de
Mon Apr 30 07:05:35 CDT 2012


Dear Robin Jones,

also with a high nitrogen load of 5000mg/l and more a safe AD process 
operation is possible. 

What kind of technology is foreseen ?

Regards

Michael Köttner

---

________________________________

Fördergesellschaft nachhaltige Biogas und Bioenergienutzung (FnBB) e.V.
German Biogas and Bioenergy Society (GERBIO)
Am Feuersee 8
74592 Kirchberg/Jagst
Germany

Fon: +49 (0)7954 921969
Fax: +49 (0)7954 926132

www.fnbb.org
www.gerbio.org

Vorstandsvorsitzender/Chairman: Dipl. Agr.biol. Michael Köttner
Stellvertretender Vorsitzender/Vice-Chairman: Dipl.Ing. Heinz-Peter Mang
Registergericht: Amtsgericht Langenburg
Registernummer: VR224
Steuernummer: 57075/04800




Am Montag, 30. April 2012, 13:04:17 schrieb Jones, Robin (TWP):
> We are in the  feasibility stage for a  3MWe power generation plant using a
> bio digester (Continuous Flow) located adjacent to cattle feedlots.. The
> available feeds are tallow, cattle and chicken manure. The mass balance
> indicates a very high nitrogen content in the effluent (±5000mg/ltr). The
> effluent's rate of discharge is also significant posing a very real
> environmental concern. Has anyone had previous experience with similar
> effluents and if so what was the strategy to mitigate environmental risk
> without adding significant CAPEX, OPEX and parasitic loads.
> 
> Considering the concentration of Nitrogen, we understand that this is not
> really a viable option for raw fertiliser (i.e. direct irrigation onto
> crops). It is understood that this would need to be concentrated up to
> reduce the volume prior to transporting to a fertiliser production
> facility approximately 80km away.
> 
> Any comments related to this would be much appreciated.





More information about the Digestion mailing list