XIAOGu-qing,MENGQiu-dong,WENRui-ming,et al.Performances of Different Pore Sizes Resins for COD Removal from Biochemical Tail Water of Petrochemical Wastewater[J].China Water & Wastewater,2022,38(7):97-102.
不同孔径树脂去除石化废水生化尾水中COD的效果
- Title:
- Performances of Different Pore Sizes Resins for COD Removal from Biochemical Tail Water of Petrochemical Wastewater
- 摘要:
- 采用静态吸附法研究了pH值、初始COD浓度、吸附时间、温度、不同树脂组合对D301大孔树脂和H103超高交联树脂去除石化废水生化尾水（BTPW）中COD的影响。当BTPW的pH值为8.38时，D301和H103对COD的去除率均最高。D301对BTPW中COD的去除率明显高于H103，D301颗粒内扩散速率常数kd为H103颗粒内扩散速率常数的4.19倍。D301倾向于吸附BTPW中的大分子污染物，而H103倾向于吸附小分子污染物。综合利用两种树脂的孔径优势，与采用1 种树脂相比，两种孔径树脂组合对BTPW中COD的去除率更大。当初始COD浓度为65.7~328.7 mg/L时，D301/H103树脂组合对COD的去除率为64.31%~85.03℅。
- Abstract:
- The effects of pH, initial COD concentration, adsorption time, temperature and resin combination on two kinds of resins (D301 macroporous resin and H103 hypercross linked resin) with different pore sizes for COD removal from biochemical tail water of petrochemical wastewater (BTPW) were investigated by static adsorption method. When the pH of BTPW was 8.38, the COD removal efficiencies of D301 and H103 were the highest. The COD removal efficiency of D301 was obviously higher than that of H103, and the intraparticle diffusion rate constant kd of D301 was 4.19 times that of H103. D301 tended to adsorb macro molecular weight pollutants from BTPW, while H103 tended to adsorb small molecular weight pollutants. The pore size advantages of the two resins were comprehensively utilized. Compared with a single resin, the removal efficiency of COD by mixture of the two resins with different pore sizes was higher. When the initial COD was 65.7-328.7 mg/L, the COD removal efficiency of D301/H103 resin mixture was in the range of 64.31%-85.03%.
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