摘要
为了满足印染废水水回用系统中反渗透膜(RO)或纳滤膜(NF)的进水水质,应对实际印染废水水质、水量的冲击,开发一种新型的用于印染废水处理的浸没式高强度膜过滤(HMF)技术,并与传统的膜生物反应器(MBR)技术进行对比,分别考察回流率、跨膜压差和污泥量3个影响因素对2种工艺的综合影响。结果表明:与传统的MBR技术相比,膜通量从11~13 L/(m^(2)·h)提升至14~16 L/(m^(2)·h),回流率从250%~300%降低至20%以下;HMF工艺产水的水质优于MBR工艺,尤其是固体悬浮物(SS)低至1 mg/L,有力保障了后续RO/NF的进水要求;同时,该技术具有较低的跨膜压差,膜污染程度相对较低,有利于长期稳定运行。目前该技术在印染行业废水深度处理中得到示范应用,具有较好的推广前景。
In order to meet the influent water quality of reverse osmosis membrane(RO)or nanofiltration membrane(NF)in the water reuse system of printing and dyeing wastewater,and to cope with the impact of actual printing and dyeing wastewater quality and water quantity,a new type was developed and submerged high-strength membrane filtration(HMF)technology for wastewater treatment compared with the traditional membrane bioreactor(MBR)technology.The combined effect of the process was investigated.The results show that compared with the traditional MBR technology,the membrane flux increased from 11~13 L/(m^(2)·h)to 14~16 L/(m^(2)·h),and the reflux rate is reduced from 250%~300%to 20%.The water quality of the HMF process is better than that of the MBR process,especially suspend solid,as low as 1 mg/L,which effectively guarantees the influent requirements of the subsequent RO/NF.The pollution level is relatively low,which is conducive to long-term stable operation.At present,the technology has been demonstrated and applied in the advanced treatment of wastewater in the printing and dyeing industry,and has a good promotion prospect.
作者
郭紫阳
阿如汗
金铁瑛
许以农
常娜
王海涛
GUO Ziyang;A Ruhan;JIN Tieying;XU Yinong;CHANG Na;WANG Haitao(School of Chemical Engineering and Technology, Tianjin Polytechnic University, Tianjin 300387,China;Zhejiang Jinmo Environmental Technology Co. Ltd, Shaoxing 312000, Zhejiang,China;School of Environmental Science and Engineering, Tianjin Polytechnic University,Tianjin 300387,China)
出处
《西安工程大学学报》
CAS
2022年第3期38-45,共8页
Journal of Xi’an Polytechnic University
基金
国家重点研发计划(2019YFC0408400)。
关键词
印染废水
浸没式高强度膜过滤
HMF
MBR
printing and dyeing wastewater
submerged high-strength membrane filtration
HMF
MBR
