The Horse 2020/21

Environment & Technology

Our ARA in Gossau

For our personal water waste, is the ARA in Gossau responsible. It is located in the outskirt Gossau and covers the usage of ca. 15'000 people. The system started in 1971 and the last expansion was a new filter in 2012. The coordinates are 2699 058 / 1240 065. 

The waters are the Greifensee, the Aabach and the Gossauerbach.

 

Fabrizio and Yanik

ARA Flos

 

The wastewater from Wetzikon is treated in the Flos wastewater treatment plant, which was built in 1961. However, not only the water from Wetzikon, but also from Aathal/Seegräben, Auslikon (Pfäffikon) including the baths, Ober-Balm (Hittnau) and Grüt (Gossau).
It is located at the Flos collection point on Usterstrasse, just by the Aabach.
At that time it was designed for 22,000 population equivalents. Due to population growth, the Flos wastewater treatment plant was expanded at a cost of 43 million Swiss francs. The idea was not only to cope with the growing population but also to keep the plant at the latest technical level, which was achieved with the help of new filter systems. After the conversion, the plant treats 37,000 population equivalents.

 

The municipal wastewater treatment plant is working at an average capacity of 120 %. For this reason, preparatory work for an expansion of the plant has been underway for some time.

 

Link

ARA Flos [www.wetzikon.ch]

ARA Wetzikon

The ARA Wetzikon has reached its limit. 37'000 citizens are registred in this system and according to 2018 the ARA Wetzikon is working 120%. So the system is overloaded. The municipal is trying to figure out how to increase the performance. The system is able to keep up the work because of it's hard working employers and financial support of the commune. A petition is already set up to collect money for the upgrade of the ARA Wetzikon. 

(Source of the Photo: Screenshot Google Maps)

Maplink: https://www.google.com/maps/place/Kl%C3%A4ranlage+Flos/@47.329379,8.7813368,15z/data=!4m5!3m4!1s0x0:0x936b3bf684920dd5!8m2!3d47.329379!4d8.7813368 

 

Post by Kadir & Rico

Working Well With Waste Water

WWTP; WasteWaterTreatmentPlant

 

The WWTP treatment plan is executed in 3 steps. Each of these steps is crucial for clean water. 

Step I) is to get rid of fats or oils by using a "pre-treatment".

Step II) is responsible for biological treatment of organic particles in the waste water. In order to do so, the plant has to work through several technically hight maintenance processes. 

Step III) During the biological process, a mixture of bacteria creates some sort of "dirt" (Schlamm). This dirt is being removed in a different pool of the plant. 

 

The Waste Water Treatment Plant in Wolfhausen is about as big as 2/3 of a football field. Since there is another one in Bubikon which is the same district (Gemeinde), which means it covers an area of about 3500 people. 

 

 

 Kläranlage Schachen in Wolfhausen