Thermal treatment of waste water

Waste water in the production of polyester is mainly reaction water. This water is treated either on site or externally. On site, this is treated by thermal oxidation. 

Combined equipment for the burning of liquid waste and waste gas, is currently the most general technique. The incinerators are also used for heat recovery. The incinerator may recover energy through steam or hot oil generation, which is used for process heating purposes. 

An external method for the treatment of reaction water is leading or transporting it to a biological waste water treatment plant (WWTP). 

Generally applicable. The Waste Incineration Directive sets requirements for incineration and monitoring. 

Driving force for implementation Environmental and economic reasons. 

---