The sludge from the pre-clarification (primary sludge) [1] is statically dewatered in the pre-thickeners [2]. The excess sludge is removed from the final clarifier [1] and dynamically dewatered via the screening belt. It is then heated to 40°C and digested in an airtight digester [3]. The sludge stabilized in this way is then dewatered with screw presses [5].
| Sludge | 5) screw press |
| Gas | 6) To the sludge drying |
| Warm water | 7) Gasometer |
| 1) From the primary and secondary clarifiers | 8) Gas flare |
| 2) primary clarifier | 9) Gas engine plant (BHKW) |
| 3) digestion chamber | 10) Thermal Energy |
| 4) Post thickeners | 11) Electrical Energy |
In sludge digestion [3], microorganisms convert organic substances into CO2 and high-energy methane, which in turn is used to heat digesters and buildings. A gasometer [7] has been installed to compensate for the uneven amount of gas produced or consumed. The gas line consists of: Gasometer [7], pressure booster station, gas flare [8] and 3 gas engines [9].
The gas engines (BHKW) produce heat and electricity for the needs of the plant.
Gasometer
