The key and difficult points in the process design of wastewater in a PCB industrial park were analyzed and the process design ideas were sorted out,the sewage treatment process was designed as follows:classified pretreatment+primary biological contact oxidation+ozone oxidation+secondary biological contact oxidation+advanced treatment process,and a good treatment effect has been obtained.Comparative analysis found that ozone oxidation process effectively improved the biodegradability of wastewater,combined with secondary biological contact oxidation system to further purify treatment,ensured the purification efficiency of pollutants in sewage,also effectively reduce the use of chemicals,for similar wastewater process design,has a high reference value.
water purification plantPCB manufacturing wastewaterclassification preprocessingbiological contact oxidationozone oxidation
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