METHOD AND DEVICE FOR CLEANING WASTEWATER FROM A COKE QUENCHING TOWER WITH SHORTENED CATCH BASIN DWELL TIME

The present disclosure relates to a process and apparatus for the purification of waste water from a coke quenching tower with reduced residence time in a collecting basin. In the process and apparatus of the present disclosure, water is used for the quenching of hot coke, and the quench water is collected in a collecting basin which is sized such that it is adequate for few quenching operations. The quench water is fed to a downstream hydrodynamic purification device without requiring any additional settling operation. In the purification device, the solids are separated from the quench water by a mechanical separation processes so as to allow a space-saving arrangement of the water collecting basin without a settling basin. The present disclosure also relates to a device configured to perform the disclosed method, which device comprises a quenching tower, a quench water conveying channel for conveying the excess quench water to a collecting basin, a collecting basin, a hydrocyclone, a pleat filter and a centrifuge which is used to separate the solid and the quench water.