摘要
针对再生水厂UF/RO双膜处理系统存在的膜污堵频发、产水量下降的问题,对进水水质、保安过滤器滤芯及RO膜元件进行分析。快滤池进水为污水处理厂达标尾水,其浮沫多为有机污染物,快滤池产水水质不佳,浊度、铁、铝含量等超出双膜系统进水安全边界值,硬度高有结垢倾向。保安过滤器滤芯有黑色及黄色粘稠状污染,污染物分布不均,有机污染物以腐殖酸类腐殖质为主,洗脱液中铝离子含量高,存在结垢与微生物污染风险。RO膜元件进水端有黏状物及固体颗粒物附着,颗粒物源于系统开车时管路残留基建杂质,影响产水并可能划伤膜原件。针对污堵发生的原因提出针对性的运行优化措施,为其他同类型污堵问题提供解决思路。
To address frequent membrane fouling and reduced water production in the ultrafiltration/reverse osmosis(UF/RO)dual-membrane treatment system of a reclaimed water plant,this study analyzed the influent water quality,security filter cartridges,and RO membrane elements.The influent to the rapid filtration tank is compliant tailwater from the sewage treatment plant,with floating foam primarily consisting of organic pollutants.The effluent quality from the rapid filtration tank is suboptimal,as turbidity,iron,and aluminum concentrations exceed the safe threshold values for the dual-membrane system influent.High hardness also indicates a scaling tendency.Security filter cartridges exhibit black and yellow viscous pollutants with uneven distribution;organic pollutants are primarily humic acid-like substances.The eluent has a high aluminum ion concentration,posing risks of scaling and microbial contamination.Sticky substances and solid particles adhere to the inlet end of RO membrane elements.These particles derive from residual infrastructure impurities in pipelines during system startup,reducing water production and potentially scratching the membrane surface.This study proposes targeted operational optimization measures based on the fouling causes,offering solutions for similar fouling issues in other systems.
作者
周洋洋
葛素娟
姜万
郭磊
程志刚
周树峰
ZHOU Yangyang;GE Sujuan;JIANG Wan;GUO Lei;CHENG Zhigang;ZHOU Shufeng(Jiangsu Fangyang Water Affairs Co.,Ltd.,Lianyungang 222000,China)
出处
《水处理技术》
北大核心
2026年第3期152-156,共5页
Technology of Water Treatment
基金
江苏省碳达峰碳中和科技创新专项资金(BE2022861)
连云港市科技成果转化(揭榜挂帅)项目(CA222104)
连云港市第六期“521工程”科研项目资助计划(LYG06521202338)。
关键词
进水水质
保安过滤器
反渗透膜
优化措施
influent water quality
security filter
reverse osmosis membrane
optimization measures
