摘要
煤化工废水经过生化处理后一般难以达到回用标准,须采用有效的深度处理工艺才能实现废水的资源化利用。通过对比研究方式,采用"混凝-超滤-反渗透工艺"及"混凝-活性焦吸附-超滤-反渗透"2种处理工艺,考察了活性焦吸附对后续膜处理工艺的影响。结果表明,活性焦对废水中的芳香族类等主要污染物具有很好的吸附性能,混凝出水经活性焦吸附后进入膜系统可有效减缓膜污染,降低膜通量的衰减程度并提高产水水质,因此,将活性焦吸附用于煤化工废水膜系统的前处理,采用"混凝-活性焦吸附-超滤-反渗透工艺"深度处理煤化工废水是有效可行的。
The quality of coke plant wastewater treated by biochemical process cannot reach the reusing standard, therefore effective advanced treatment process must be carried out for the purpose of reusing the wastewater. Two processes called ＂ coagulation-ultrafiltration-reverse osmosis＂ and ＂ coagulation-activated coke adsorption-ultrafihration-reverse osmosis＂ were used to investigate the impact of the activated coke adsorption on the subsequent membrane process. The results indicated that activated coke had good adsorptive property on aro- matic compounds and thus it can alleviate membrane fouling, enhance membrane flux and improve permeate quality. Hence, activated coke adsorption can be used as pretreatment of the membrane system, and coagulation- activated coke adsorption-uhrafihration-reverse osmosis technology is an effective process for the advanced treat- ment of coke plant wastewater.
出处
《环境工程学报》
CAS
CSCD
北大核心
2013年第10期3827-3832,共6页
Chinese Journal of Environmental Engineering
基金
科研院所技术开发研究项目(2010EG111021)
北京市财政项目(PXM2012_178203_000001)
国家自然科学基金资助项目(51378491)
关键词
活性焦吸附
超滤
反渗透
煤化工废水
膜污染
activated coke adsorption
uhrafiltration
reverse osmosis
coke plant wastewater
membrane fouling
