Time to multiply and to spread throughout the slurry. The digester must be designed in a way that only fully digested slurry can leave it. The fully digested slurry leaves the digester through the outlet into the slurry storage. The biogas is collected and stored until the time of consumption in the gasholder . The gas pipe carries the biogas to the place where it is consumed by gas appliances .
Condensation collecting in the gas pipe is removed by a water trap.
Depending on the available building material and type of plant under construction, different variants of the individual components are possible. It is advisable to start collecting cattle dung during the construction phase in order to have enough by the time the plant is finished. When the plant is being filled for the first time, the substrate can be diluted with more water than usual to allow a complete filling of the digester. Depending on the type of substrate in use, the plant may need from several days to several weeks to achieve a stable digesting process. Cattle dung can usually be expected to yield good gas production within one or two days.