1. Februar 2022
glow webteam
biosolids | Klärschlamm | Pflanzenkohle | Unkategorisiert

The waste­water asso­cia­tion Main-Taunus chooses a climate-protec­ting and cost-saving way to recycle phos­phorus from sewage sludge

With the PYREG PX 750, the Abwas­ser­ver­band Main-Taunus has commis­sioned the world­wide most advanced carbo­niz­a­tion and phos­phorus reco­very plant.

From now on, muni­cipal sewage sludge is sanitized and recy­cled into phos­phorus ferti­lizer on site in Lors­bach, a climate protec­ting and cost-saving manner.
In the applied PYREG process, the sewage sludge is first dried using the belt drying system from Eliquo Stulz and then carbo­nized by the PYREG reactor tempe­ra­ture of 500°C to 700°C. This carbo­niz­a­tion elimi­nates any organic pollut­ants such as critical phar­maceu­tical resi­dues, micro­plastics, PAH, PCDD/F, PCB and hormones. The resul­ting process gas is freed from dust and carbon parti­cles by a process gas filter and trans­ferred to the combus­tion chamber. Combus­tion takes place with a FLOX® burner at tempe­ra­tures of around 1,000 °C. The hot exhaust gases arising there heat the reac­tors indi­rectly via the outer shell of the reac­tors. It is there­fore an auto­thermal process and the gene­rated rene­wable energy is used for the drying of the sewage sludge.
The carbon contained in the sewage sludge is perma­nently bound in the gene­rated biochar from bioso­lids. Used as a phos­phorus ferti­lizer in agri­cul­ture that biochar closes the mate­rial cycle. And it further­more acts as a stable carbon sink for over 1000 years.
The PYREG PX 750 processes 5000 t of dewa­tered sewage sludge per year (or 16 t per day at 7500 opera­ting hours) with 25% dry matter, or 1250 t per year of dried sewage sludge. As a valu­able output, the asso­cia­tion gene­rates up to 625 t of biochar form bioso­lids per year with a phos­phorus content of about 15%.

With the commis­sio­ning of this plant, Abwas­ser­ver­band Main-Taunus is taking a resource-saving approach to the legally required reco­very of phos­phorus from sewage sludge. The goal is to use the reco­vered biochar form bioso­lids for agri­cul­tural purpose

 

 

2 Kommentare

  1. Dear ladies and gentlemen,
    The use of this mate­rial as a soil improver seems inte­res­ting, but I wonder how it relates to the release of heavy metals from the product into the soil. What are the criteria for the instal­la­tion and for its use as a fertiliser?
    Kind Regards,
    Chiel Landman
    HVC Groep

  2. Dear Mr. Landman,

    It will depend on the quality of the input mate­rial and its heavy metal concen­tra­tions, if the resul­ting Biochar product is passing the appli­cable heavy metals limits for its use. Those vary by appli­ca­tion and country.
    Addi­tio­nally, any organic pollut­ants (PFAS, phar­maceu­ti­cals, germs, micro­plastics, …) are comple­tely destroyed.
    The valu­able Phos­phorus remains plant avail­able is released slowly by the demand of the plant.
    We will be in touch shortly to discuss the details.
    Best Regards
    PYREG

Einen Kommentar abschicken

Deine E-Mail-Adresse wird nicht veröffentlicht.

DAS KÖNNTE SIE AUCH INTERESSIEREN

Die FAZ über die PYREG-Klimaschutztechnologie

Die FAZ über die PYREG-Klimaschutztechnologie

"Ersetzt ein Stahlwerk seinen jährlichen Koksbedarf von 45.000 Tonnen durch Pflanzenkohle, lässt sich eine Kohlendioxidfracht von rund 146.000 Tonnen vermeiden," Dies ist nur eine wichtige Information dieses Artikels über PYREG aus dem...