News
27
2022
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12
What are the maintenance methods of MBR membrane in winter?
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For the seasonal maintenance of MBR membranes, water temperature and water quality temperature will change greatly due to seasonal changes.
Especially in winter, when the water temperature is low, the membrane holes of the MBR membrane are tightened.
Together, the lower the water temperature, the greater the water viscosity, the lower the membrane passage rate, and the greater the resistance.
The amount of water produced at this time tends to decrease and return to the normal state.
However, when the water temperature is lower than 0 ℃, there will be the possibility of irreversible frostbite of the membrane module. Therefore, when conditions permit, users in the north can give priority to the heat exchange of water to ensure the water temperature.
First of all, the membrane module to do a comprehensive chemical cleaning, so that the equipment has a prominent working flux.
Even if some flow is lost due to temperature, it will not affect daily operation.
If the local temperature is too low and there is a possibility of freezing, it is necessary to ensure that the aeration of the membrane tank and the position of the liquid level in the membrane tank are at least 30cm higher than the membrane module.
Outdoor MBR membrane pool with insulation board cover is also a good choice.
If the remaining flow rate is large, the valve can also be adjusted appropriately to reduce the membrane flux to reduce the pollution of the membrane surface and ensure the stable operation of the equipment.
Although the water temperature in summer is suitable for the normal operation of the membrane module, the water quality is subject to greater vibration.
Often, irregular control of biochemical systems leads to frequent contamination of membrane modules.
At this moment, we should have a reasonable understanding of the importance of membrane bioreactor and biochemical treatment in the reactor.
In order to reduce unnecessary chemical cleaning and ensure the normal operation of the site, it is recommended that customers conduct water sample testing on the biochemical system in time to ensure the stable operation of the system, and do not make adjustments when the biochemical system is paralyzed and the membrane module is blocked by large-scale pollution.
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