2, the submerged membrane bioreactor submerged membrane bioreactor originated in Japan, mainly for the treatment of domestic sewage in recent years, some European countries are also keen on its research and applications. Submerged membrane bioreactor is placed directly in the membrane bioreactor inside, sometimes known as submerged membrane bioreactor, by gravity or vacuum pump suction or vacuum as the water generated power. The process is due to the membrane being placed in a bioreactor, reducing the footprint of the processing system, and the process by suction or vacuum pumps pumping water, power consumption costs far less than the split membrane bioreactor, each ton water power consumption is about 1/10 split type. If the gravity of the water, you can complete this part of the cost savings. However, due to the membrane module is immersed in a mixture of the bioreactor, the contamination is fast and clean up more trouble Nanjing nanofiltration production, need to be removed from the membrane reactor. 1. pressure decay method will be completely immersed in water nanofiltration membrane module, fully wetting film silk; 2. Adjust the intake valve to valve pressure after 1Bar; 3. Slowly open the inlet valve, a gradual increase in the intake pressure to 1Bar, when the pressure to be stable, close the intake valve; note: the beginning part of the side air intake have not drained the water under pressure into the product water side, the pressure is stable time may need 2 ~ 3min; 4. stationary packing 10min ; 5. Paul read after the completion of the water side pressure gauges, pressure decay if less than 0.3Bar, the membrane integrity is good, if the pressure is greater than the attenuation 0.3Bar tubular membrane, the membrane or membrane leak exists wire fracture If the pressure decay test is an automatic process, and you should output alarm, after reading the alarm, the operator should be retested using bubble manual observation method to identify and mark the location of the leak components; 6. If a leak is found, repair Nanjing small Carolina membrane repair after re-testing, until the adoption of testing; 7. Restore valve status, enter the normal operation. Nanjing hollow nanofiltration | Jun Xin Environmental Technology (certified) | Nanjing nanofiltration provided by Nanjing Environmental Protection Technology Co., Ltd. Jun Xin. Nanjing Environmental Protection Technology Co., Ltd. Jun Xin (www.jxhb880.com) is a leader in Nanjing, sewage treatment equipment, over the years, the company implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Jun Xin in environmental technology leadership with the staff warmly welcome all inquiries negotiations to create Chun-hsin environmental technology a better future.