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METHOD FOR ADVANCED TREATMENT OF PAPERMAKING WASTEWATER BY ADVANCED OXIDATION OF ACTIVATING PERSULFATE OR PEROXYMONOSULFATE WITH FERROUS SALT
METHOD FOR ADVANCED TREATMENT OF PAPERMAKING WASTEWATER BY ADVANCED OXIDATION OF ACTIVATING PERSULFATE OR PEROXYMONOSULFATE WITH FERROUS SALT
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机译:过硫酸盐或过硫酸高氧硫酸盐与高级硫酸盐的高级氧化处理造纸废水的方法
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摘要
A method for advanced treatment of papermaking wastewater by advanced oxidation of activating persulfate or peroxymonosulfate with a ferrous salt. The method is divided into two phases, namely, an oxidation phase and a precipitation phase. The oxidation phase is carried out in an advanced oxidation device where wastewater is prone to mix, and the hydraulic retention time is 30min-120min. Persulfate or peroxymonosulfate is subjected to reaction with a ferrous salt to generate sulfate free radicals with a strong oxidizing property, and organisms in the wastewater are oxidatively degraded. The precipitation phase is carried out in a precipitation device, the hydraulic retention time is 1.5h-5h, and an alkaline solution or poly aluminum chloride is added so as to promote the flocculation and sedimentation of iron mud. The method has high efficiency, easy operation, and wide applicable pH range.
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