The invention provides a method for advanced treatment of
coking wastewater, mainly solving problems existed in the prior technology, such as complex treatment processes, ineffectiveness, and difficulty in meeting a discharging standard. The method is characterized by comprising the following major steps: step one, packing a column, that is, first soaking iron scraps by using a dilute
sulfuric acid and a dilute NaOH solution separately, smashing
coke, mixing uniformly the iron scraps and the
coke with a volume ratio of 10:1, and packing the mixture into an iron-carbon column; step two, carrying out an acidizing treatment on the
coking wastewater which has gone through a two-stage biochemical treatment; step three, adding a flocculating agent into the acidized
wastewater; step four, carrying out a
column chromatography treatment, during which the liquid flows into the iron-carbon column from the bottom portion and flows out from the upper portion; step five, precipitating after carrying out a neutralizing treatment; and step six, repeating operations in step two to step five on supernate obtained in step five. The method for advanced treatment of
coking wastewater provided by the invention has the advantages of simple equipment needed in implementation, convenient operation, good effect, quick effectiveness, cheap and easily
available drugs and reagents, low cost in operation of the device, and high practicability.