Xinjiang Tianye Co., Ltd. uses highly active microorganisms and microbial activation technology to treat the PVC polymerization centrifuged mother liquor wastewater. The wastewater treatment effect has reached the world's advanced level. The successful application of this technology to the recycling of wastewater from the polymerization of mother liquor is still the first case at home and abroad.
The production of PVC resin by the calcium carbide method consumes a large amount of freshwater resources, and at the same time releases a considerable amount of production wastewater containing harmful substances, ie, PVC polymerization centrifuged mother liquor wastewater. Xinjiang Tianye Company's 200,000-ton/year PVC production plant's polymerization centrifuged mother liquor wastewater treatment facility was put into operation for only half a year. There was a large amount of sludge and green algae on the contact oxidation ponds, poor microbial activity, and COD (chemical oxygen demand). ) Reduction of decomposition efficiency and other issues. In response to this problem, technicians have innovatively adopted highly active microorganisms and microbial activation technologies. The technology effectively removes the sludge deposited on the filler by quantitatively adding cultured, domesticated high-activity microorganisms and microbial activators in the contact oxidation tank, establishing a new highly active microbial membrane and maintaining the biofilm. The active thickness has greatly improved the treatment efficiency of the original wastewater treatment facility and achieved the goal of double the processing capacity without changing the existing equipment and facilities. The final COD concentration of wastewater is reduced to less than 40 mg/l, which is far below the national emission standard. The treated water can be used as the circulating cooling water of the power plant to achieve a closed loop of wastewater and achieve zero emissions.
After calculation, Xinjiang Tianye Company can reduce the discharge of wastewater by 2.85 million cubic meters per year, save water expenses by 4.275 million yuan, reduce COD emissions by 1710 tons, reduce by 60%, and save 1.909 million yuan of sewage charges annually.
At the end of November last year, at the National Circular Economy Working Pilot Meeting, the experts gave a high evaluation of Xinjiang Tianye's PVC production wastewater treatment technology, and considered that the traditional calcium carbide method PVC has become a highly polluted, high-consumption, deadline-elimination process. Clean production, rational use of resources, and advanced technologies with broad prospects for development have provided environmental protection technology support for China's PVC industry to become bigger and stronger.
The production of PVC resin by the calcium carbide method consumes a large amount of freshwater resources, and at the same time releases a considerable amount of production wastewater containing harmful substances, ie, PVC polymerization centrifuged mother liquor wastewater. Xinjiang Tianye Company's 200,000-ton/year PVC production plant's polymerization centrifuged mother liquor wastewater treatment facility was put into operation for only half a year. There was a large amount of sludge and green algae on the contact oxidation ponds, poor microbial activity, and COD (chemical oxygen demand). ) Reduction of decomposition efficiency and other issues. In response to this problem, technicians have innovatively adopted highly active microorganisms and microbial activation technologies. The technology effectively removes the sludge deposited on the filler by quantitatively adding cultured, domesticated high-activity microorganisms and microbial activators in the contact oxidation tank, establishing a new highly active microbial membrane and maintaining the biofilm. The active thickness has greatly improved the treatment efficiency of the original wastewater treatment facility and achieved the goal of double the processing capacity without changing the existing equipment and facilities. The final COD concentration of wastewater is reduced to less than 40 mg/l, which is far below the national emission standard. The treated water can be used as the circulating cooling water of the power plant to achieve a closed loop of wastewater and achieve zero emissions.
After calculation, Xinjiang Tianye Company can reduce the discharge of wastewater by 2.85 million cubic meters per year, save water expenses by 4.275 million yuan, reduce COD emissions by 1710 tons, reduce by 60%, and save 1.909 million yuan of sewage charges annually.
At the end of November last year, at the National Circular Economy Working Pilot Meeting, the experts gave a high evaluation of Xinjiang Tianye's PVC production wastewater treatment technology, and considered that the traditional calcium carbide method PVC has become a highly polluted, high-consumption, deadline-elimination process. Clean production, rational use of resources, and advanced technologies with broad prospects for development have provided environmental protection technology support for China's PVC industry to become bigger and stronger.
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