Certains équipements génèrent de la chaleur lors de leur fonctionnement. Cette thermie peut être valorisée sur plusieurs process pour évaporer des effluents liquides ou chauffer des matières solides.
EVAP’OVIVE is an evaporation process at atmospheric pressure. This allows the discharge to evaporate in order to reduce the volumes of effluents discharged or to respect low water constraints.
The K-THERM process is a biological sludge dryer used after K-BOX dewatering.
Biological sludge is put in slow motion by a rotary screen in a heated room. Upstream, the heat from the hot-water loop (motor or boiler) are converted to hot air by a finned coil.
Leachates pretreatment in a heated lagoon
Biological treatment in a lagoon combines leachate reheating and aeration in order to provide optimal conditions for bacteria all year round.
The thermal energy is transferred to the leachates by a specific heat exchanger. The basins are aerated by surface aerators.
The performance achieved with this type of pretreatment is interesting in terms of its biodegradable COD and the nitrification of ammonia.