The invention relates to the field of semi-
coke wastewater treatment, in particular to a semi-
coke wastewater treatment method. The method comprises a pretreatment phase and a biochemical treatment phase, wherein the pretreatment phase comprises the following steps of enabling semi-
coke wastewater to be successively subjected to oil removing treatment, acid stripping treatment,
deamination treatment and dephenolization treatment to obtain pretreated wastewater, wherein the acid stripping treatment is performed in an acid stripping
tower, the
deamination treatment is performed in a deaminationtower, and the dephenolization treatment is performed in a carbolic oil extraction
tower; the biochemical treatment phase comprises the following steps of enabling the pretreated wastewater to successively pass through a
hydrolysis acidification
pool, a biochemical reaction
pool, a
settling pool, a coagulative
precipitation pool and a film treatment device to obtain
dialysis water and concentratedwater, wherein the
dialysis water enters a cooling segment of a vertical
carbonization furnace, and the concentrated water enters a preheating segment of the vertical
carbonization furnace. The acidstripping
tower, the
deamination tower and the carbolic oil extraction tower jointly cooperate with another process in a specific process condition, so that the semi-
coke wastewater can be recycled for
quenching coke, the quality of an obtained semi-coke product meets a standard, the cycle use of the semi-
coke wastewater is realized, and the environmental
pollution is reduced.