Method and apparatus for treating process water

An apparatus for degassing process water loaded with dissolved gaseous compounds comprising at least one of carbon dioxide CO2, carbon monoxide (CO), volatile organic substances, and solids, the process water received from a wet-cleaning installation for cleaning process gas, the apparatus comprising:

• in a first process stage including in a sealable tank with a supply line at least one entry element for entering process water into the tank,
• wherein the tank comprises a gas-collecting chamber on a top side of the tank for receiving gaseous compounds separated from the process water, and
• a gas drain for the separated gases and a floating sludge drain is provided in an upper area of the gas-collecting chamber,
• wherein:
• the tank comprises:
• a drain for the treated process water, and
• a discharge facility for discharging solids separated from the process water, the discharge facility being provided in an area of a lowest point of the tank,
• wherein the drain includes at least one of a sealable outlet, a pump, and at least one hydrocyclone, the drain draining treated process water from the tank,
• the at least one entry element subjects the process water to a drop in pressure, and the at least one entry element distributes the process water in the gas-collecting chamber, and
• the at least one entry element comprises a nozzle which finely distributes the process water in the gas-collecting chamber.