Red card for microplastics - SPORTFIX CLEAN drains sports field in Bühl
A modern artificial turf pitch offers athletes a comfortable and weather-independent surface for their regular training. During the renovation of the former school and club sports field in the Baden town of Bühl, the existing hard pitch was therefore converted into an artificial turf pitch. The current discussion about microplastic pollution caused by the discharge of particles from artificial turf has led to the project being implemented with a special focus on environmental compatibility. In order to minimise the discharge of plastic particles, Bühl therefore decided to use cork as infill material. In order to prevent the infill material as well as broken and discharged particles of the artificial turf from entering the environment, 208 metres of SPORTFIX CLEAN were installed around the sports field during the reconstruction. The filter system retains the discharged microplastics and at the same time provides surface drainage. Accumulating water is quickly and reliably drained and filtered from the sports field.
For the operator, the SPORTFIX CLEAN channel filter system offers a high degree of safety. The maintenance effort is very minimal. The filter system can be in use for decades and functions safely and reliably. The long maintenance intervals are a great advantage for the operator. SPORTFIX CLEAN was awarded the Environmental Technology Prize from the State of Baden-Württemberg in 2019.
Easy installation - reliable drainage and infiltration
The old drainage system as well as the surface covering were first removed from the existing hard pitch. As soon as the subgrade - the necessary basis for the channel runs - had been created, the new SPORTFIX CLEAN channels were then laid. The channel elements are light and therefore very easy to handle. They are made of recycled composite material and are extremely robust and resistant to breakage. First the trash boxes were placed and connected to the channel. The channel runs were placed along the edge of the pitch on the concrete foundation and stabilised with a concrete backrest. With standard tools, fitting pieces of channels and gratings were produced directly on the construction site.
After the channel run had been completely laid, the prefabricated drainage pipe was inserted. The insertion of the pipe started at the drains, the trash boxes and then inserted into the entire channel run. Then the filter granulate was filled in. Using a template, the mineral filter material was removed and thus brought to a uniform level. The gratings were inserted and screwed together using a toggle system. After the drainage lines on the pitch were completed again, the artificial turf covering could be laid and the cork granulate was applied.
The channel filter in function
In Bühl, the channels were installed on both longitudinal edges of the pitch. The channel body with grating as well as the textile-coated drainage pipe together with the patented filter material CARBOTEC 60, all belong to the system. The frost-resistant, mineral substrate retains the plastic particles washed out by precipitation. This is a surface filtration. On the sports field in Bühl, the filter area at the edge of the playing field adds up to more than 20 square metres. This allows large quantities of solids to be absorbed and retained. Function is guaranteed even during heavy rainfall events. Moreover, the channel filter dries out, which means that it is not filled with water in a continuous back-up. Decomposition and the redissolving of pollutants are thus prevented.