| As a kind of unwieldiness wastewater, cocking wastewater always receives attention from many researchers. Up to now, there are three treatment methods which are physicochemical treatment, biochemical treatment and advanced oxidation processes. In this paper, modified montmorillonite is used in both advanced treatment and pretreatment of cocking wastewater based on biochemical process. Many achievements that are of great significance and practical value have been made.In foundation of drawing advanced experiences in the modification of montmorilllonite from china and abroad, the author discussed the conditions and methods of organic modification. Many kinds of modified montmorillonite was prepared and the influence of organic modification and sodium-modification on properties and structures of the modified montmorillonite are studied in this paper. The samples were characterized by XRD, IR, SEM etc.The adsorptive properties of modified montmorillonite to phenol and ammonia nitrogen were researched. Adsorption influence factors were studied in detail and the optimum conditions of the reaction are obtained. Results show that the decolorations could be stated by an expression as Freundlich model. The results show that the model can be suitable for the data of experiment. Kinetics of phenol sorption to organic montmorillonite from water shows that the adsorption rection is easy to take place.According to characteristics of coking wastewater and adsorptibility of modified montmorillonite, adsorb-coagulation was prepared and the optimal process conditions in coking wastewater pretreatment and advanced treatmentwere determined. Results show that the modified montmorillonite mixed with polymeric aluminium as a kind of adsorb-coagulation was able to decrease the workload of subsequent biotreatment greatly and the complex agent has broad application foreground.
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