【摘要】 [目的]研究片沸石对武汉南湖水中COD的吸附。[方法]以片沸石为吸附剂,研究沸石的吸附时间、投入量、粒径、环境pH对吸附效果的作用。[结果]片沸石对南湖水中COD有较好的吸附效果,在吸附时间为40 min、投加量为20 g/L、沸石粒度为-74μm、pH=7时,吸附率为63%左右。吸附过程符合准二级反应动力方程和Freundlich吸附等温方程。[结论]该研究为天然沸石在污水处理中的应用提供了依据。更多还原

【Abstract】 [Objective]The research aimed to study the adsorption of COD by using heulandite in Wuhan South Lake. [Method]Taking heulandite as adsorbent,the effects of the adsorption time of adsorption,the dosage of adsorbent,article size and the pH of solution were studied..[Result]The heulandite had a good adsorption effect on COD in South Lake water. When the time of 40 minutes,the dosage of 20 g/L,the grain size less than 74 μm,the pH of 7,its adsorption rate was about 63%. The adsorption process conformed to pseudo-second order equation,the adsorption isotherms followed the Langmuir isothermal equation more exactly.[Conclusion]The study provides the basis for the application of natural zeolite in wastewater.更多还原