ZHAO Zuoping,CUI Xueyan.Application on the Performance of Chitosan-Activated Sludge Composite Adsorbent on Cr(Ⅵ) Adsorption[J].Research of Soil and Water Conservation,2016,23(05):359-363.
壳聚糖活性污泥复合吸附剂在含铬废水处理中的应用
- Title:
- Application on the Performance of Chitosan-Activated Sludge Composite Adsorbent on Cr(Ⅵ) Adsorption
- 分类号:
- X506;X52
- 摘要:
- 为了解壳聚糖活性污泥在废水处理中的吸附性能，提高其吸附重金属离子的应用能力，采用壳聚糖包埋固定活性污泥，制备了壳聚糖活性污泥复合吸附剂，考察了发泡剂量、固化液浓度、交联剂浓度对吸附能力的影响。结果表明：不同固化液浓度、发泡剂量、交联剂浓度对壳聚糖活性污泥在含铬废水处理中的吸附能力均不同。其中2.0 g/L氢氧化钠（NaOH）固化液、质量百分比为10%的NH4HCO3为发泡剂、体积分数为2.5%的环氧氯丙烷（ECH）作交联剂处理Cr6+浓度为10 mg/L的铬废水时，效果最佳。该复合吸附剂的制备研究一方面为污泥的资源化利用、变废为宝探索新的途径，另一方面也为污水的处理提供新的方法。
- Abstract:
- In order to understand the adsorption capacity of chitosan-activated sludge composite adsorbent in waste water treatments, and improve the adsorption performance to heavy metals, the composite adsorbent was produced by coating activated sludge using chitosan, and the effects of foaming agent, setting liquid and cross linking agent on its adsorption performance were discussed in this paper. The results showed that the adsorption capacity of chitosan-activated sludge composite adsorbent on Cr(Ⅵ) in Cr-bearing waste water varied because of different concentrations of setting liquid, foaming agent and cross linking agent. The 2.0 g/L NaOH as the setting liquid, 10% NH4HCO3 as the foaming agent, and 2.5% ECH as the cross linking agent had the optimum condition for Cr(Ⅵ) adsorption in Cr-bearing waste water with Cr6+ concentration of 10 mg/L. The present study can provide the reference for innovated utilization of residual sludge, and also offer a new method for waste water treatment.
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备注/Memo
收稿日期:2016-01-12;改回日期:2016-03-21。
基金项目:国家公益性行业（农业）科研专项（201203045）；陕西省资源生物重点实验室项目（2015SZS-15-09）；陕西理工学院人才启动项目（SLGKYQD2-07）；陕西省2011协同创新中心项目[QBXT-Z（P）-15-5]
作者简介:赵佐平(1982-),男,陕西旬阳人,博士,讲师,主要从事环境质量与作物营养研究。E-mail:zhaozuoping@126.com