METHOD FOR ADVANCED TREATMENT OF COKE WASTEWATER UTILIZING COMBINATION OF THREE-DIMENSIONAL ELECTRODE AND COAGULATION

摘要

A method for advanced treatment of coke wastewater utilizing a combination of three-dimensional electrode and coagulation is provided, which comprises the following steps: using H2SO4 or hydrochloric acid to adjust the pH value of the wastewater; then drawing the wastewater into a fluidized bed three-dimensional electrode reactor, in which oxidative damage to organic substances is strengthened under the combined action of a particle electrode and a main electrode; then making the wastewater flow into a coagulation tank, to which a certain quantity of polysilicate ferric magnesium coagulant is added for carrying out coagulation treatment; making the processed wastewater flow into a sedimentation tank; and educing supernatant to obtain effluent. The method carries out advanced treatment on bio-chemical effluent of the coke wastewater. COD, ammonia-nitrogen and chroma of the effluent can reach the national first class discharge standard. The method has simple process, easy operation, obvious processing effect, low operating cost and wide application prospect.