GAC-BAF联合工艺处理高浓度含酚废水  

Treatment of Highly Concentrated Phenols Wastewater with a GAC-BAF Combined Process

作　　者：刘占孟[1,2] 聂发辉[2] 

机构地区：[1]北京科技大学土木与环境工程学院,北京100083 [2]华东交通大学土木建筑学院,南昌330013

出　　处：《土木建筑与环境工程》2009年第4期135-140,共6页Journal of Civil,Architectural & Environment Engineering

基　　金：江西省自然科学基金项目(2008GZC0053);江西省教育厅科技计划资助项目(GJJ08208)

摘　　要：采用活性炭(GAC)吸附-曝气生物滤池(BAF)降解联合工艺处理高浓度含酚废水,对GAC吸附、再生,BAF降解,GAC-BAF联合工艺运行工况进行了研究。结果表明:该联合工艺能有效降解含酚废水;GAC吸附容量与进水流量无关,吸附效果在原水进水pH=3.0、温度20±2℃下达到最佳;反冲进水碱性条件下对GAC解吸再生有利,反冲流量对再生有一定影响;BAF对含酚废水的容忍浓度为1 100 mg/L,GAC再生废水进入BAF之前需稀释至微生物适宜的pH值和苯酚浓度;GAC-BAF联合工艺中GAC柱进水流量的选择应确保BAF床有足够时间对已吸附饱和的另一平行GAC柱完成再生。该联合工艺将GAC吸附和BAF生物降解结合成连续运行的方式,使得苯酚废水处理过程不受GAC再生的影响,解决了传统GAC吸附和生物降解不适宜处理高浓度含酚废水的缺点。Wastewater with high phenol concentration was treated by uniting granular active carbon （GAC） adsorption and biological aerated filters （BAF）. And the operation parameters of GAC adsorption, GAC regeneration, BAF degradation and GAC-BAF combined process were studied with tests. It was shown that the combined process can efficiently degrade the wastewater with high phenol concentration. And the GAC adsorption capacity had nothing with influent flux. Moreover, the optimal adsorption effect could be achieved with the condition of influent with the condition that pH was 3 and temperature was 20±2℃. The alkaline condition was benefit for GAC regeneration and the influent flux. The BAF＇ s tolerance to phenol was approximate 1 100 mg/L and the effluent of regeneration should be diluted to appropriate pH value and phenol concentration before entering into the BAF. And the flux chosen for adsorption of combined process should ensure the BAF have enough time to regenerate the other saturated GAC column. The GAC-BAF process which combines adsorption and biodegradation was a continuous operation mode and the GAC regeneration had no impacts on the wastewater treatment, with which the technology could overcome the defects on treating wastewater with high concentration of phenols in traditional GAC adsorption and biological technology.

关 键 词：活性炭 吸附 曝气生物滤池 含酚废水 生物降解 

分 类 号：X703.1[环境科学与工程—环境工程]