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Zero discharge technology of production wastewater from extraction workshop
  
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KeyWord:extraction workshop  zero discharge system of wastewater  vegetable oil plant
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ZHOU Renkai  
WAN Hui  
DU XuanLi，etc  
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Abstract:
      In the extraction production process of traditional vegetable oil plant, a certain amount of production wastewater is produced. The wastewater mainly contains the condensate of direct steam from desolventizer-toaster, stripping tower and cooking tank and so on, also contains small amounts of fines, solvent and oil. The production wastewater is mainly treated by wastewater biochemical method in sewage treatment station at present, it can be treated by some novel technologies, but the production wastewater discharge from extraction workshop could not be reduced radically. The wastewater could be reused to achieve the goal of eliminating the production wastewater from extraction workshop by zero discharge technology of wastewater.
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