Installations for the capture of NH4 in biogas plants and the reject water from the biogas plant

摘要

The invention relates to equipment which can convert the MGP and the NH 4 struvite NH 4 by binding to the granules formed by the MGP are added and which is regenerated and recycled in the plant reactor vessel. The system also consists of equipment to keep the reactor vessel, stirred by recycling the water after it has been removed from the reactor vessel, and settled in the container 2. The water which is led from the reactor vessel by gravity the bottom falls into the container 2 and the purified water is discharged from the top of the tank as treated while the precipitated granules are returned to the reactor vessel. While the deposited material is recycled, will be brought together granules and water content of NH4 by the recycled water is used to stir the reactor vessel, and thus creating more struvite. It is important that the struvite which is taken for recycling binds maximum NH4 before it is recirculated, as the cost is almost the same whether there is much or little NH4 bound in the granulate / struvite. The system was sought constructed so that it can operate with a minimum of control and so that it can run even if the liquid supply is stopped temporarily.