Marselisborg Renseanæg (WWTP) and the big plans for the future.

I have already seen and experienced a variety of new and exciting things in the two weeks that I have been here in Aarhus, Denmark. Now that I have introduced myself, I thought was fitting to begin to introduce the different treatment plants. Marselisborg Renseanlæg is one of the four plant that Aarhus Water has in operation. For those who do not know Danish, Renseanlæg means wastewater treatment plant. Do not let me fool you, I am not even close to speaking Danish. However, I am trying to learn some words.

Marselisborg average daily flow is 25,800 m³/d (6,815,639 g/d) and has been running close to 150% energy efficient due to energy efficient equipment and biological treatment which allows very low air usage (see chart and picture below).

 

Below is the flow diagram and some pictures I took of Marselisborg Renseanlæg during my first visit there, enjoy…

 

Inlet 

Screens

Scum & Grit Tanks

Primary Settling Tanks

Pictures above and below are of the Biotanks (aka aeration tanks with D.O. of 0.3 mg/L)

Final Settling Tanks

Sandfilters

DEMON

Pictures above and below of Biogas Engine

Even though there are already some very interesting things going on at this plant there are even bigger plans for it in the future. The plant will be moved to make room for a public park for festivals and concerts. Below is a map of what will be added (the white boxes and circles are where the plant will be). The orange will be the park, the green will be a marina, and the blue will be the new Marselisborg WWTP.

Thank you! See you soon! Next on the agenda is Egå Renseanlæg (Egaa WWTP).