External MBR membrane manufacturer for sale

External MBR membrane manufacturer for saleIt is an efficient wastewater treatment equipment that combines membrane separation technology with biological treatment technology. Its main structure includes membrane components, pumps, and bioreactors. Membrane modules are core components made of polymer materials such as polyethylene, polypropylene, etc., which have good chemical stability, corrosion resistance, and mechanical strength. The external MBR membrane extracts the sludge water mixture from the biological reaction tank through a pump, pushing it through the membrane module for cross flow filtration circulation, thereby achieving sludge water separation and obtaining clean permeate water.

External MBR membrane manufacturer for saleDaily inspection

In order to ensure the stable operation of the membrane stack and the long-term effectiveness of the sewage treatment system, the operation management personnel must include the following contents as management items.

(1) Transmembrane pressure difference

Check the stability of transmembrane pressure difference. The sudden increase in transmembrane pressure difference indicates the occurrence of membrane fouling, which may be caused by abnormal aeration conditions or deterioration of sludge properties. When this situation occurs, necessary measures should be taken, such as chemical cleaning of the membrane stack.

(2) Aeration state

Check if the aeration air volume is at the standard level and if it is evenly aerated. When abnormal aeration air volume and obvious uneven aeration are found, necessary adjustment measures should be taken, such as adjusting through air flushing pipes, checking installation conditions, and adjusting aeration.

(3) Color and odor of activated sludge

The color and odor of normal activated sludge are earthy brown with cohesiveness and no unpleasant odor. If the appearance and odor are not in this state, please check the MLSS, DO, pH, water temperature, BOD load and other values appropriately.

( 4) MLSS

The normal MLSS is between 5000-10000mg/L. In situations where this condition is not met, the established performance may not be achieved. Therefore, please adjust the MLSS range appropriately: when the MLSS is too low, measures such as adding seed sludge or stopping sludge discharge can be taken; When MLSS is too high, measures such as increasing the sludge discharge to the sludge concentration retention tank can be taken.

(5)DO

The normal DO is 2-4mg/L or above in a membrane bioreactor. When the condition is not met, necessary measures such as adjusting the aeration conditions can be taken.

(6) pH

The normal pH is 6-9. If the condition is not met, please add acid or alkali to the pretreatment tank to adjust the pH.

(7) Water temperature

The normal water temperature is 10-40 ° C. In situations where this condition is not met, necessary measures such as cooling and insulation should be taken if possible.

(8) Liquid level

Please check if the liquid level of the membrane bioreactor is within the normal range. Please verify the automatic liquid level control when an abnormality occurs.

(9) Effluent chromaticity

After death, microorganisms secrete an inert substance with pigments, which causes the effluent to turn slightly yellow. Therefore, some dead mud needs to be discharged to restore the effluent color. In order to ensure that the membrane stack can play its role, the operation and management personnel need to carry out daily maintenance in the above way.