Impact-resistant multiplication combined type coking waste water treatment process
A technology of coking wastewater and treatment process, which is applied in water/sewage multi-stage treatment, flotation water/sewage treatment, water/sludge/sewage treatment, etc. It can solve the problem of difficult or slow recovery of the system and long start-up time of the biochemical system , Aeration tank foam is difficult to eliminate and other problems, to achieve the effect of improving biodegradability and optimizing material composition
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[0030] Please refer to Figure 1. The process of the present invention does not add any dilution water. The amount of coking wastewater in a coking plant is 1500m 3 / d. The source of wastewater is: a. Distilled ammonia wastewater, water volume 30m 3 / h; b. Drainage from the tar workshop, with a water volume of 10-60m 3 / h; c. Drainage of refined benzene workshop, water volume 10m 3 / h; d, the drainage of the cleaning tanker e, underground phenol water. The physicochemical pretreatment technology adopts continuously variable mechanical stirring coagulation reaction and pressure dissolved air flotation technology. The diameter of the microbubbles produced by the pressure dissolved air release system is about 20μm, and the coagulant dosage is 50-200mg / L. The anaerobic composite reactor is suspended with polyethylene spherical packing, using mechanical stirring and mixing, the hydraulic retention time is 8h, the biofilm microbial concentration is greater than 3.5g / L, the activated slud...
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