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Treatment of urine in a precipitation reactorDue to dwindling fossil phosphorus ressources it is necessary to preserve the existing resources and search for long-term alternatives. One alternative source for phosporous is urine. For this reason urine is treated with the help of a chemical-physical process in a precipitation reactor. In this process, the crystalline magnesium-ammonium-phosphate (MAP; also known as struvite) is produced by adding magnesium oxide, which is considered to be a valuable fertiliser in agriculture.
The installation of the MAP precipitation reactor took place in May 2010. The MAP production is running. More information can be obtained here:
MAP-factsheet (401 KB) Description-MAP-reactor (73 KB) Poster (454 KB) Film about struvite production within the SANIRESCH project (in German with English subtitles).
Treatment of brownwater with MBROver the last years the membrane technology has proven of the value for treatment of wastewater and the production of process water. The procedural combination of membrane ultrafiltration and activated sludge process optimise the bioloical treatment process. In many regions space in cities is limited, because of the high population increase. With the use of a MBR it is possible to treat wastewater within a limited area availeble. After removal of the solids by the use of a primary screen in pretreatment, the brownwater (faeces and flush water) is treated in a membrane bioreactor (MBR). Here, detrimental substances, as well as solid, bacteria and almost all viruses will be degraded or rather restrained. Bathing water quality is produced fulfilling EU regulations. Due to microbiological properties, permeate can be used as process water in buildings and for irrigation in agriculture without any problems. The brownwater treatment plant was installed in June 2011. A detailed overview upon the functioning of the reactor is enabled by the following documents: Brownwater-factsheet (280 KB) Treatment of Greywater with MBRMembrane bioreactors are also very effective in treating greywater (the kitchen and wash water). The treated water fulfils the EU regulations for bathing water and is well-suited for in-door usage as process water. For example it can be used for toilet flushing, heating and air conditioning. The process water can be also used for irrigation in agriculture or for gardening.
The greywater treatment plant was installed in May 2011.
A detailed overview upon the functioning of the MBR plant is enabled by the following documents: Greywater-factsheet (300 KB) Poster (548 KB)
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