The A2/O(O) process of coking wastewater treatment has not been able to meet the requirement of environmental protection.On the basis of engineering summary and on-site investigation, four kinds of practical technologies for coking wastewater treatment are put forward: i.e.pre-aeration technology,biological fluidized bed technology,primary adsorption technology and secondary sedimentation tank upgrading technology.The project utilization shows that all the four technologies can not only reduce cost to a certain extent,but also ensure the stability of the treatment up to specification,which can be largely promoted.

"> Coking wastewater, Pre-aeration, Primary adsorption, Biological fluidized bed,  , High efficiency sedimentation tank