References

This is a selection of already in operation self-sufficient wastewater treatment plants after EssDe®-M process for various large catchments.

EssDe®-M Plant N. (Germany)

The sidestream treatment at this WWTP is removing up to 300 kg N/d. Due to unfavorable climatic conditions the EssDe® facility was completely enclosed.The surplus sludge of the sidestream treatment is introduced into the mainstream. The surplus sludge of the main stream is separated by means of cyclones and the granules are returned to the biological reactor basins while the light fraction thickened and piped to the digesters.

Neumarkt_2
Neumarkt_2
 
EssDe®-M Plant B. (Germany)

In 2011, the sidestream nitrogen removal was taken in operation at WWTP B. The reactor surface is covered with floating plastic insulators to prevent excessive cooling. The surplus sludge of the sidestream treatment is given into the mainstream. In the main stream, the Planctomycetes, which originate from the sidestream, are separated from the waste activated sludge and returned to the main biology (EssDe® for the mainstream methodology). Thus, creating prerequisites for deammonification in the mainstream on one hand and significantly improving sludge settleability on the other hand.
At this WWTP, the S::Select® controller is being used. The controller optimizes the sludge retention time in the mainstream. First priority is to comply with required NH4 effluent values. The second priority is to keep the SRT as low as possible. Hence, stabilization of active sludge in the main biology is reduced to a minimum level while at the same time optimizing gas yield in the digesters. Controller S::Control® also optimizes the nitrification/denitrification thru fuzzy pattern logic.

Bickenbach_Essde
Bickenbach_Essde
 
EssDe®-M Plant G (Switzerland)

In 2006, WWTP Glarnerland installed the worldwide first EssDe® facility for treatment of centrate. In this plant, the sidestream’s load is exceptionally high. Due to co-fermentation, up to 40% of the total nitrogen load is treated in the sidestream. Surplus sludge of the EssDe® is pumped into one of two main biological process trains (red indicator arrows). The surplus sludge of the main BRBs is being separated, the granular Planctomycetes are returned to the biology and the light flocculent sludge is handed over to sludge treatment.
Compared to the remaining conventional train, the excellent sludge properties are particularly noteworthy. After a only few minutes, the sedimentation is now essentially completed while in the conventional train there is still no sedimentation being recognized.

Glarnerland_EssDe
Glarnerland_EssDe
 
EssDe®-M Plant A, (USA)

The EssDe® sidestream treatment is removing up to 1300 kg N/d. Complying with architectural guidelines in a fast growing area, the two covered above ground tanks were fully integrated into the brick facade architecture of the entire plant.
As the first plant in the US, it channels the surplus sludge of the sidestream treatment into the mainstream BRBs. The surplus sludge of the mainstream is then separated by cyclones and thus the granules are being kept in the biological reactor basins.




Aerial Photo 9-4-2014 (7)
Aerial Photo 9-4-2014 (7)
 
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