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Zero Discharge Wastewater Treatment
Zero Discharge Wastewater Treatment
(I) Zero Discharge Concept
Zero discharge of wastewater refers to the industrial water after reuse, through the wastewater treatment process, the pollutants in this part of the wastewater containing salts and pollutants in high concentration, the effluent water is all recycled and reused; the salts and pollutants in the water are concentrated and crystallized or pressed and filtered waste residue in the form of solids is discharged from the plant to be sent to landfill in waste treatment plants or recycled as useful chemical raw materials, without any waste liquid discharged from the plant.
Zero discharge technology is a comprehensive application of membrane separation, evaporation crystallization and drying and other physical and chemical processes to concentrate solid impurities in the wastewater to a very high concentration, most of the water has been recycled, leaving a small amount of high salt and high organic matter mother liquor, you can choose the appropriate treatment process according to the specific circumstances of each enterprise, without discharging the system.
(B) zero discharge applicable industries
At present, zero discharge in mine water treatment, power plant wastewater treatment, smelting wastewater treatment, RO concentrated water treatment, water reuse and other industries with more use, and achieve better environmental benefits.
(C) Zero Discharge Process Flow
Te Paul zero discharge process technology is a combination of membrane concentration and MVR evaporator, in this process, the membrane produced water and evaporated condensate recycling, while salt crystallization and drying into industrial salt, impurities, etc. through solidification means to deal with, through the membrane filtration and evaporation crystallization combined treatment process, so as to achieve the purpose of zero discharge of wastewater. At present, based on the practice of zero discharge of wastewater for many years, our company has proposed the following processes for the zero discharge treatment of industrial high-salt wastewater.
Treatment process 1: Industrial wastewater - ultrafiltration - reverse osmosis - high pressure reverse osmosis - evaporation crystallization (mixed salt)
Treatment process 2: Industrial wastewater - reverse osmosis - nanofiltration - electrodialysis - evaporation crystallization (sodium chloride salt)
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High pressure reverse osmosis - evaporation crystallization (sodium sulfate salt)
Treatment process 3: Industrial wastewater - ultrafiltration - reverse osmosis - (high-pressure reverse osmosis) - 1 # MVR evaporation system - 2 # MVR evaporation system
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Sodium sulfate salt Sodium chloride salt
Zero Discharge Wastewater Treatment
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Address：North of Niuyi Village, Xianggongzhuang Subdistrict,Zhangqiu District, Jinan City, Shandong Province, P. R. China
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