摘要：
采用"一体臭氧曝气生物滤池+曝气生物滤池(BAF)"组合工艺,对纺织印染废水进行预处理,联合后续膜分离工艺以实现中水回用,处理水量为5000 m3/d。设计运行条件下,臭氧曝气生物滤池最佳臭氧投加量为20-30mg/L,预处理系统出水COD<40 mg/L、BOD<10 mg/L、SS<10 mg/L、色度<4倍;反渗透产水可作为染整工艺用水,膜滤浓缩液可达标排放。工程实践证明,该联合工艺可实现对纺织印染废水的深度处理与高质回用,并解决了膜滤浓缩液的处理难题,具有推广应用价值。
关键词:
深度处理,
中水回用,
纺织印染废水,
臭氧氧化,
曝气生物滤池
Abstract:
For the purpose of water reuse with a capacity of 5000 m3/d,a combined process of integrated ozonation biological aerated filter and biological aerated filter(BAF) has been used for the pretreatment of textile and dyeing wastewater.Then,membrane filtration has been used for achieving water reuse.Under designed operating conditions,the optimal ozone dosage for integrated ozonation biological aerated filter is 20-30 mg/L,pretreatment effluent COD<40 mg/L,BOD<10 mg/L,SS<10 mg/L,and chroma<4 times.The water produced by RO system could be reused in dyeing process,and membrane filtration concentrate could be discharged under local regulations.It has been proved by practical application that the combined process could guarantee stable advanced treatment and reclaimation of textile and dyeing wastewater with high quality,and solve the problem of membrane filtration concentrate treatment,showing its broad popularization and application value.
Key words:
advanced treatment,
recycled water reuse,
textile and dyeing wastewater,
ozonation,
biological aerated filter
中图分类号:
何耀忠, 汪晓军, 徐金玲, 葛启龙, 颜金利, 邱孝群. 纺织印染废水深度处理与回用实例[J]. 工业水处理, 2013, 33(3): 77-80.
He Yaozhong, Wang Xiaojun, Xu Jinling, Ge Qilong, Yan Jinli, Qiu Xiaoqun. Instance of advanced treatment and reuse of textile and dyeing wastewater[J]. INDUSTRIAL WATER TREATMENT, 2013, 33(3): 77-80.