Due to the discharge of a large amount of industrial wastewater and the long-term excessive use of chemical fertilizers in agriculture, ammonia nitrogen pollution in environmental water bodies is serious. Nitrogen is the main substance that causes eutrophication.
The membrane aerated bioreactor (MABR) process has the characteristics of less aeration, integration of nitrification and denitrification, small amount of sludge and convenient operation and management. It is a traditional treatment of high oxygen demand wastewater. A compelling alternative process has received the attention of water treatment workers around the world. Nitrification, denitrification and heterotrophic oxidation can be achieved simultaneously due to the obvious stratification in the MABR biofilm.
In this experiment, high-efficiency denitrifying bacteria were screened and applied to membrane aerated bioreactor for intensive research to enhance the effect on wastewater treatment, and such reactors were used to treat nitrogen-containing wastewater, thereby making the reactor efficient. The advantage of low consumption.
In this study, the parallel device operation method was adopted, that is, two identical membrane aerated bioreactors under the same operating conditions were used for water treatment, one of which was added to the screening strain operation (enhanced reactor), and the other experimental device was not. Screening strains (parallel reactors) were added as parallel experimental devices.
The reactor unit is cylindrical and the membrane module is placed in the center of the reactor in the form of an inverted umbrella. The reactor volume is 5 L. The membrane module is a polypropylene hydrophobic membrane having an effective area of 0.2 m2, an average outer diameter of 0.5 mm, a wall thickness of 50 um, and a molecular weight cutoff of 100,000 Daltons. The supply pressure is 7. 0 kPa. The influent water is pumped from the waste water tank by the peristaltic pump, and then injected into the reactor. The mixed liquid in the reactor is self-exited by the biofilm treatment on the aeration membrane.
Chuangrui peristaltic pump has a stable self-priming capacity and stable working performance, with a wide flow range of 0.0015-35000 ml per minute,Played a vital role in the experiment.
Advantage of CR peristsaltic pump.
CR Peristaltic pump are easy to maintenance
replaceable tubes allow you to switch from one liquid to another in the shortest amount of time.
No need to rinse and disassemble after the flushable product, you only need to replace the peristaltic pump tubing
CR Peristaltic pump with high precision
The calibration function can ensure the filling accuracy for each dose .The suckback function prevents liquid (reverse): in the dispense mode, after the end of the direct cycle, the return stroke is initiated to prevent the liquid from flowing out of the pump tube during the stop.
CR peristaltic pump are non-pollution: the fluid only contacts the pump tube and does not touch the pump body;
CR Peristaltic pump is Versatility
CR peristaltic pump can be used with a variety of products and can be used in a variety of industries.
CR peristasltic pump are easy to work
After the power is turned off and on, the control system maintains the current settings (pump head tubing model and other parameter ).
CR peristaltic pump with good sealing: It has good self-priming ability and can be idling to prevent backflow.
CR peristaltic pump with Low shear: ideal for conveying shear sensitive, aggressive fluids.
