An example of fluorine chemical production wastewater treatment project design
In view of the characteristics,different methods are used to treat fluorine chemical production wastewater according to their compositions.For high fluorine-containing wastewater,calcium salt precipitation-a-luminum salt precipitation-triple effect evaporation was adopted as the pretreatment process,for low fluorine-containing wastewater,calcium salt precipitation-aluminum salt precipitation was adopted as the pretreatment process.Using aerobic biochemical-ozone catalytic oxidation-flocculation precipitation combined process to treat the pretreated mixed wastewater,the treatment process,design parameters,operation effect,investment and oper-ation cost of the said project were introduced.The engineering operation results indicated that,through the treat-ment,the indicators of pH value,COD and fluorine ions in the effluent water all met the requirement of class V water standard in GB 3838-2002 Surface water environmental quality standard,the total salt content satisfied the requirement of part 3 of DB 37/3416.3-2018 Shandong xiaoqing river basin water pollutant comprehensive discharge standard,which also met the downstream water plant management standard.
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