以城市污水处理厂二沉池脱水污泥为原料，钛白废酸为活化剂，制备污泥活性炭（SAC），以H₂O₂为改性剂对SAC进行改性处理制备MAC。研究了改性剂质量分数、改性时间对吸附效果的影响，通过单因素实验得出最佳改性参数为：改性质量分数为10%、改性时间为60 min；该条件下，MAC的碘吸附值为493.40 mg/g、比表面积为1 021.45 m²/g、总孔容为0.622 8 mL/g、含氧官能团为1.792 5 mmol/g，分别较改性前提高了21.4%、35.5%、30.9%和8.44%。将MAC用于屠宰废水的处理，结果表明，当MAC质量浓度为12 g/L、振荡时间为50 min、pH维持不变时，屠宰废水中COD和TP的去除率分别为90.7%和98.5%。MAC对屠宰废水中COD的吸附符合Freundlich等温模型和准二级动力学模型。

Dehydrated sludge from a municipal wastewater treatment plant is used as raw materials and waste acid from the production of titanium dioxide is used as an activator to prepare sludge-activated carbon (SAC).SAC is then modified by H₂O₂ to prepare modified activated carbon (MAC).The effects of the mass fraction of modifier and modification time on the adsorption performance are studied.The optimum modification parameters are determined by single factor experiment design as follows:the mass fraction of modifier is 10% and modification spends 60 min.Under these optimum preparation parameters,the iodine adsorption value of MAC is 493.40 mg·g^-1,its specific surface area is 1 021.45 m²·g^-1,the total pore volume is 0.622 8 mL·g^-1 and the oxygen-containing functional group is 1.792 5 mmol·g^-1,which increase 21.4%,35.5%,30.9% and 8.44% respectively than that of SAC.As MAC is used to treat slaughter wastewater,the results show that the removal rates of COD and TP in slaughter wastewater can reach 90.7% and 98.5%,respectively when the mass concentration of MAC is 12 g·L^-1,oscillation spends 50 min and pH value remains unchanged.MAC's adsorption to COD in slaughter wastewater coincidences well with Freundlich isothermal model and quasi-second-order kinetic.

李航(1986-),男,硕士,工程师,研究方向为固废的减量化与资源化利用,lihang0213@163.com