（3）曝气池。曝气池是水中污染物主要的降解场所，同时实现微生物的增殖。

(3) Aeration tank. The aeration tank is the main degradation site for pollutants in the water, and at the same time realizes the proliferation of microorganisms. The aeration tank uses a combination of centrifugal blower and microporous aerator to provide sufficient oxygen source for the biochemical degradation of sewage in this area and the removal of BOD5 and CODCr in the water. An online dissolved oxygen meter is installed at the end of the aeration tank to monitor the dissolved oxygen in the mixed liquid in real time and control the mass concentration of dissolved oxygen at the outlet to be about 2.0 mg/L. In order to prevent the hair and other fibrous substances in the sewage from entering the subsequent membrane bioreaction membrane tank, a 2mm×2mm stainless steel grid is set on the outlet channel of the aeration tank, and the sewage flows through the grid and enters the membrane bioreaction membrane tank by itself. <br>(4) Membrane biological reaction membrane pool. A membrane module is installed in the membrane bioreactor membrane tank, which realizes the separation of mud and water through membrane filtration. The activated sludge is trapped outside the membrane, and the clean water in the membrane is lifted by the membrane bioreaction water pump to the pool for discharge or reuse. <br>(5) Sludge tank. The end of the membrane bioreactor membrane tank is equipped with a sludge tank, and a sludge return pump is set to return the mixed liquid of the membrane tank to the distribution well. The designed maximum reflux ratio is 150%, and the sludge mass concentration of the membrane bioreactor membrane tank is controlled to not less than 3000mg /L. The surplus sludge is discharged into the surplus sludge well according to the process operation.

(3) Aerated tank. The aeration tank is the main degradation site of pollutants in water, and the proliferation of microorganisms is realized. The aeration tank uses a combination of centrifugal blowers and microporous aerators to provide sufficient oxygen sources for the biochemical degradation of organic matter in this area and the removal of BOD5 and CODCr from the water. The on-line dissolved oxygen meter is set up at the end of the aeration tank to monitor dissolved oxygen in the mixture in real time and control the mass concentration of the outlet dissolved oxygen at about 2.0mg/L. In order to prevent the hair and other fibrous substances in sewage from entering the follow-up membrane bioreactive membrane pool, set up 2mm × 2mm stainless steel grid on the aeration tank outlet channel, and the sewage flows through the grid and then flows into the membrane bioreactive membrane pool.<br>(4) Membrane bioreactive membrane pool. Membrane bioreactive membrane pool is installed with membrane components, through membrane filtration to achieve mud water separation, activated sludge is intercepted outside the membrane, membrane water through membrane bioreactive water production pump to the outer drainage or reuse of the pool.<br>(5) Sludge pool. The end of the membrane bioreactive membrane pool is equipped with a sludge pool, and the sludge reflux pump is set up to return the membrane pool mixture to the distribution well, and the maximum reflux ratio is designed to be 150%, and the sludge mass concentration of the membrane bioreactive membrane pool is controlled at least 3000mg/L. The remaining sludge is discharged into the remaining sludge well according to the operation of the process.

(3) Aeration tank. Aeration tank is the main degradation site of pollutants in water, and it can also realize the proliferation of microorganisms. The aeration tank adopts the oxygen filling method of the combination of centrifugal blower and microporous aerator, which provides sufficient oxygen source for the biochemical degradation of organic matter and the removal of BOD5 and CODCr in the water. The end of aeration tank is equipped with an online dissolved oxygen meter to monitor the dissolved oxygen in the mixture in real time and control the mass concentration of dissolved oxygen at the outlet is about 2.0mg / L. In order to prevent the fiber like substances such as hair in sewage from entering the subsequent membrane bioreaction membrane tank, 2mm × 2mm stainless steel grid is set on the outlet channel of aeration tank, and the sewage flows through the grid and flows into the membrane bioreaction membrane tank.<br>(4) Membrane bioreaction membrane pool. Membrane module is installed in membrane bioreactor membrane tank to separate mud water through membrane filtration. Activated sludge is intercepted outside the membrane. The clear water inside the membrane is lifted to the outside of the water tank or reused through membrane bioreaction production pump.<br>(5) Sludge tank. Sludge tank is set at the end of membrane bioreactor membrane tank. Sludge reflux pump is set to return the mixed liquid of membrane tank to distribution well. The maximum reflux ratio is 150%. The sludge quality concentration of membrane bioreactor membrane tank is controlled at not less than 3000mg / L. The surplus sludge is discharged into the surplus sludge well according to the process operation.<br>