Case Studies

The operator of a biogas plant was looking for three new tanks for the facility. They were to be used as a beet store, a fermenter and final storage tank. The tank for final storage needed to have a volume of 5,000 m³. 

The customer opted for three stainless steel tanks from Börger. The customer was particularly impressed with all the options available for Börger stainless steel tanks. The customer could select the perfect solution for his requirements from the wide range of different covers. The plan is to extend the beet tank from the current storage capacity of 1,895 m³ up to 2,527 m³ in 2015. 

The stability of the stainless steel tank and the option of dismantling it to assemble in another location gave the operator of the biogas plant financial security should the guaranteed payments for power feed into the power under the terms of the German Renewable Energy Act end after 20 years.

Technical data

A major German brewery sought a stainless steel tank for storing the process water needed in the beer production. The brewery had received several offers from various providers. They decided to buy a Boerger stainelss steel tank with a volume of 856 m³. 

The Boerger stainless steel tank consists of individual segments (1.5 x 3.0 m) which are bolted to one another. This system offers distinct advantages over a welded stainless steel tank. Besides the intrinsic value based on it being easy to disassemble and relocate somewhere else, the bolted Boerger stainless steel tank is far more reasonable than a welded tank from one of the competitor's .  

The tank also has a stainless steel roof and floor. As the brewery wanted to clean the tank interior once a year, the Boerger stainless steel tank was also fitted with an entrance flap which can be bolted back on firmly after use. The tank takes less than a week to assemble.

Technical data

A waste water treatment plant was looking for a stainless steel tank combination for a new technique of gas extraction from digested sludge. Here, a high level tank should surround an inner cylindrical pipe.

The operator of the waste water treatment plant decided in favor of a Börger stainless steel tank type 07.8. The customer was not also convinced by the high quality, but also by the possibility to choose the size as well as the material of the tank individually for each application.

The selected tank is 12 m high and consists of 8 stainless steel liner rings. The liner rings 1 – 6 are made from stainless steel 1.4301, because of the anaerobic fermentation of the area, which is covered with medium. Stainless steel 1.4571 has been selected for the two upper liner rings and the roof, as it is more resistant to chemical gases.

The Börger stainless steel high level tank has been mounted next to the cylindrical pipe, which has already been installed, and has then been lifted over it by crane. With this technique, much time and installation costs could have been saved, because of the better installation conditions.

Technical data