Pharmaceutical Wastewater Treatment

MBR hollow fiber membrane modules with 700m3/day treatment capacity were put into operation in the wastewater treatment project of a pharmaceutical factory in Zhejiang since 2016. In March 2018, they were transformed into MBR flat membrane modules, which were separated into two membrane tanks: East and West. In March 2018, the first installation of 1200m2 flat sheet membrane modules finished, and in October 2019, the second installation of 1800m2 flat sheet membrane modules were conducted; Totally 10 groups of PE150-200 membrane modules were arranged with a total area of 3000m2.

Performance：
The influent COD concentration of the biochemical tank is 8000-10000mg/l, and the ammonia nitrogen is 200-300mg/l. The sludge concentration of the membrane tank is stable at about 20000mg/l. The effluent COD is less than 500mg/l, and the ammonia nitrogen is less than 35mg/l. The membrane online cleaning cycle is stable at 3 months, and no offline cleaning has been carried out for 3 years.