高温焙烧改性底泥吸附剂的应用  

Application of high temperature roasting modified sediment adsorbent

作　　者：于珊珊[1] 杨月红[1] 程杨 

机构地区：[1]昆明理工大学环境科学与工程学院,云南昆明650500 [2]北方碧水环境工程有限公司,黑龙江哈尔滨150070

出　　处：《化工进展》2017年第B11期495-499,共5页Chemical Industry and Engineering Progress

基　　金：人才科研启动(14119031);科技三项费用(20090074)项目

摘　　要：在滇池的疏浚过程中产生了巨大的底泥,其堆积程度也在剧增,不仅对生态环境造成破坏,还占用了大量的土地。目前对于滇池底泥的的综合利用已经初步地探索出一条途径,但是如何实现底泥的减量化、无害化、稳定化处置和资源化利用,是当前亟待解决的大问题。为了解决这一问题,本文提出了将底泥作为吸附剂吸附工业废水中的重金属离子,为实现底泥的资源化利用提供一种新的思路。通过高温焙烧处理底泥吸附处理模拟含铬和铜的废水,采用静态吸附法,研究了焙烧温度、pH、离子浓度、吸附温度、吸附时间对底泥吸附Cr^(6+)和Cu^(2+)的影响。结果表明,利用高温焙烧改性底泥吸附处理含铬和铜的废水,具有去除率高、吸附量大、处理效果好等优点。热力学参数的计算结果表明底泥对Cr^(6+)和Cu^(2+)的吸附过程均为自发、吸热和熵增加的过程。In the dredging process of the battery produced a lot of sediment, and the amount ofaccumulation is increasing. Not only to the destruction of the ecological environment, but alsotake up a lot of land. At present, the comprehensive utilization of sediment in Dianchi has beenpreliminarily explored, But how to achieve the reduction of sediment, harmless, stable disposaland resource utilization, is a big problem to be solved. In order to solve this problem, a newmethod is put forward, which uses sediment as adsorbent. In order to solve this problem, it isproposed that the sediment is used as adsorbent to adsorb heavy metal ions in industrialwastewater, which provides a new way to realize the resource utilization of sediment. Throughthe high temperature calcination treatment sediment adsorption treatment of chromium andcopper containing wastewater, using static adsorption method. The effects of calcinationtemperature, pH, ion concentration, adsorption temperature and adsorption time on theadsorption of Cr6＋ and Cuz＋ were studied. The results show that the treatment of wastewatercontaining chromium and copper by high temperature roasting sediment has the advantages ofhigh removal rate, high adsorption capacity and good treatment effect. The results ofthermodynamic parameters show that the adsorption process of Cr6＋ and Cu2＋ is spontaneous,endothermic and entropy.

关 键 词：高温焙烧 底泥 吸附 废水 改性 动力学模型 

分 类 号：X705[环境科学与工程—环境工程]