摘要
在超滤+反渗透的双膜法污水回用系统中,其水质含有机物及微生物浓度较大,导致反渗透的化学清洗周期普遍较短。在实际运行中,长反渗透的化学清洗周期方法,除了控制系统上游来水水质达标、加强杀菌外,还发现增加反渗透停机浸泡频率,浸泡时投加NaOH对延长化学清洗周期具有显著作用。
In the double membrane wastewater reuse system of ultrafiltration+reverse osmosis,the concentration of organic matter and microorganism is large,the chemical cleaning cycle of reverse osmosis is generally short.In actual operation,the method of prolonging the chemical cleaning cycle of reverse osmosis in addition to controlling the water quality of the upstream inflow of the system and strengthening sterilization,it is also found that increasing the soaking frequency and adding NaOH during the soaking process have significant effects.
作者
董雄文
Dong Xiongwen(CNOOC Huizhou Petrochemical Co.,Ltd.,Guangdong,516086)
出处
《当代化工研究》
2020年第8期103-104,共2页
Modern Chemical Research
关键词
污水回用
超滤
反渗透
NAOH
浸泡
sewage reuse
ultrafiltration
reverse osmosis
NaOH
soak
