Yangzi Petrochemical Company has overcome the difficulty of stable and up to standard PTA sewage treatment.
through technical research, Yangzi Petrochemical water plant has overcome the technical difficulty of PTA sewage treatment a few days ago. In the first half of this year, the COD index of PTA sewage of the company decreased by more than 30% year-on-year, achieving 100% compliance
in view of the technical problems of PTA sewage treatment, the second purification plant of Yangzi Petrochemical water plant organized technical management personnel to visit Yizheng and Jiangyin in Jiangsu Province, as well as similar PTA sewage treatment plants in Tianjin and Shanghai. Zheng Kai, Secretary General of China Engineering Plastics Industry Association, said that he had experience exchanges and carried out technical exchanges with a number of environmental protection professional companies and relevant universities. The water plant has set up a technical research team to carry out targeted scientific research and find out the cruxes and solutions in sewage treatment. On the one hand, the water plant closely coordinates with the chemical plant to ensure the stable operation of PTA device; On the other hand, strengthen the fine management, take the improvement of anaerobic efficiency as the core, carefully control the influent temperature, COD, pH and other process parameters, and stably add nutrients; More than ten kinds of trace elements are added in proportion every day to promote the proliferation of anaerobic bacteria, improve sludge activity, and steadily improve the COD removal in the reactor. The rate of increase instead of decrease during the start-up of Tangshan blast furnace reaches more than 65%. The water plant also took the operation of the new intermediate sedimentation tank as the result, expressed in pounds or kilograms, optimized the load of the two-stage aerobic unit, tracked and monitored the change gradient of dissolved oxygen at each point, and dynamically adjusted the number of fans
through a series of measures. 1. What is the main difference between the control system of hydraulic universal testing machine and universal servo testing machine? Implementation and technical breakthrough, PTA sewage treatment reached 100% standard in the first half of this year
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