reinforced polyvinylidene fluoride hollow fiber curtain membrane box (MBR membrane box) with lining

Preparations before installing the reinforced polyvinylidene fluoride hollow fiber curtain membrane cassette (MBR cassette)

Note! (1) Confirm that the necessary transport tools (forklift or crane, etc.) and installation tools (wrench, screwdriver, electric drill, etc.) for the installation of the reinforced polyvinylidene fluoride hollow fiber curtain membrane cassette (MBR cassette) are ready. 

Note! (2) Confirm that the remaining debris (concrete blocks, mud, sand, wood chips, steel wire, etc.) and water in the membrane bioreactor (MBR) pool have been Clean it up. 

Note! (3) Confirm that the supporting facilities of the reinforced polyvinylidene fluoride hollow fiber curtain membrane box (MBR membrane box) have been installed and debugged.

Installation method of reinforced polyvinylidene fluoride hollow fiber curtain membrane box (MBR membrane box) with lining

(1)Installation of quick connector

Wrap the quick-release connector with raw tape and install it on the internal threaded straight-through of the water collecting pipe and the internal aeration main pipe.

(2)Installation of membrane slots, water collecting pipes, internal aeration main pipes and external aeration pipes

the membrane slot, water collecting pipe, internal aeration main pipe and external aeration pipe to the membrane frame with SUS304 stainless steel screws andUPVCpipe clamps.

(3)Installation of membrane frame

The membrane frame is fixed in the membrane bioreactor (MBR) pool with SUS304 stainless steel expansion screws .

(4)Connection of the water collecting pipe, internal aeration main pipe and external aeration pipe with the corresponding reserved interfaces of the membrane bioreactor (MBR)

the water collecting pipe, internal aeration main pipe and external aeration pipe and membrane bioreactor (MBR) , and connect them with pipes and valves.

(5)Add clean water

Add clean water (usually tap water) to the membrane bioreactor (MBR) pool to 0.2 metersbelowthetopof themembraneframe.

(6)Installation of reinforced polyvinylidene fluoride hollow fiber curtain membrane module (MBR membrane) with lining

the reinforced polyvinylidene fluoride hollow fiber curtain membrane module (MBR membrane) with lining in the membrane slot.

(7)Installation of compression rod

The pressure rod is fixed to the membrane frame with SUS304 stainless steel bolts.

(8)Installation of transparent hose

Install the transparent hose on the quick-connect connectors corresponding to the water collecting pipe, the internal aeration main pipe and the lined reinforced polyvinylidene fluoride hollow fiber curtain membrane module (MBR membrane) .

Note! (1) When installing the quick-release connector, pay attention to winding the raw tape in a clockwise direction. When tightening, pay attention to controlling the force and tightness. Remember not to The inner screw is straight and broken. 

Note! (2) When installing the external aeration pipe, a flushing valve can be installed according to user needs. 

Note! (3) The membrane frame should be kept as level as possible during installation. This will help maintain the stability of the membrane frame and the uniformity of aeration. 

Note! (4) When the water collecting pipe, internal aeration main pipe and external aeration pipe are connected to the corresponding reserved interfaces of membrane bioreactor (MBR), they should be equipped with their own regulating valves.Valve to facilitate subsequent commissioning, operation, maintenance and offline chemical cleaning.

Note! (5) The reinforced polyvinylidene fluoride hollow fiber curtain membrane module (MBR membrane) with inner lining should be kept dry before installation. After unpacking, it should be installed in the membrane slot as soon as possible. Remember not to expose it to air or direct sunlight for a long time to avoid dehydration of the reinforced polyvinylidene fluoride hollow fiber curtain membrane module (MBR membrane) with inner lining, causing irreversible damage. 

Note! (6) When installing the reinforced polyvinylidene fluoride hollow fiber curtain membrane module (MBR membrane), the operator should wear cotton gloves, handle it with care, and be careful not to scratch or break the membrane fibers, causing irreversible damage. 

Note! (7) When installing the reinforced polyvinylidene fluoride hollow fiber curtain membrane module (MBR membrane), the operator should step on the membrane frame instead of the reinforced polyvinylidene fluoride hollow fiber curtain membrane module (MBR membrane) to avoid irreversible damage. 

Note! (8) After the reinforced polyvinylidene fluoride hollow fiber curtain membrane module (MBR membrane) is installed, the ambient temperature and water temperature should be maintained at 5- 40℃. If there is a possibility of freezing, insulation measures should be taken. 

Note!(9) After the reinforced polyvinylidene fluoride hollow fiber curtain membrane module (MBR membrane) is installed, it must be kept moist for a long time to avoid the membrane from drying out and causing irreversible damage. 

Note!(10) After installation, the reinforced polyvinylidene fluoride hollow fiber curtain membrane module (MBR membrane) with lining must be kept away from direct sunlight to prevent the membrane from being oxidized and causing irreversible damage. 

Note! (11) After installation, the reinforced polyvinylidene fluoride hollow fiber curtain membrane module (MBR membrane) with lining should be debugged with clean water as soon as possible. After the clean water debugging is completed, it should be put into normal operation as soon as possible. Long-term storage in a clean water environment may cause membrane fouling and clogging. 

Note! (12) The above is the installation method and precautions for the reinforced polyvinylidene fluoride hollow fiber curtain membrane cassette (MBR cassette) with lining and without a lifting device produced by our company. If it is a reinforced polyvinylidene fluoride hollow fiber curtain membrane cassette (MBR cassette) with a lifting device, please contact the relevant personnel of our company for the installation method and precautions. 

of reinforced polyvinylidene fluoride hollow fiber curtain membrane box (MBR membrane box) with lining

Preparation work before commissioning of reinforced polyvinylidene fluoride hollow fiber curtain membrane box (MBR membrane box) with lining

Note! (1) Confirm that the reinforced polyvinylidene fluoride hollow fiber curtain membrane box (MBR membrane box) with lining has been installed 

Note! (2) Confirm that other supporting facilities of the membrane bioreactor (MBR) have been installed and debugged 

Note! (3) Add clean water (usually tap water) to the membrane bioreactor (MBR) pool until the operating water level

Clean water commissioning of reinforced polyvinylidene fluoride hollow fiber curtain membrane box (MBR membrane box) with lining

（1）Start the blower and check the air tightness and uniformity of the internal aeration main pipe and the external aeration pipe After starting the blower, first check the firmness of the membrane support, the air tightness of the transparent hose and quick-release connector, and the uniformity of aeration. After confirming that they are in good condition , adjust the corresponding valves to make the air supply ratio of the inner aeration main pipe and the outer aeration pipe of the reinforced polyvinylidene fluoride hollow fiber curtain membrane box (MBR membrane box) with inner lining to be about 1:1 . 

（2）the air tightness of the reinforced polyvinylidene fluoride hollow fiber curtain membrane module (MBR membrane) with lining and the outlet pipe After starting the blower, open the air inspection valve and control the pressure gauge value to ≤0.10MPa. Check the air tightness of the lined reinforced polyvinylidene fluoride hollow fiber curtain membrane assembly (MBR membrane ) and the outlet pipe. After confirming that the air tightness is intact, close the air inspection valve and open the exhaust valve. After the exhaust is completed, close the exhaust valve. 

（3）Start the suction pump Startthe suction pump, adjustthe frequency converterorregulating valve ofthe suction pump so thatthe waterflow rate meets the design requirements ofthe liner-enhanced polyvinylidene fluoride hollow fiber curtain membrane box (MBR membrane box), and record the vacuum pressure gauge value at this time. 

（4）After the clean water debugging is completed, stop the suction pump and blower immediately. 

Note! (1) Do not use excessive amounts of clean water for a long time or for debugging, otherwise the membrane may become fouled and blocked.

Adding seed mud

Note! (1) It is recommended to use seed mud with the same properties as the wastewater to be treated. 

Note! (2) Itis recommended to use seed mud with an MLSS concentrationofabout20,000 mg/L . 

Note! (3)The amount of seed sludge added should be such that the sludge concentration in the membrane bioreactor (MBR) pool is between 5000-8000 mg/L. 

Note! (4) When adding seed mud, use a 1mm ultra-fine grid to filter it to remove impurities in the seed mud. 

Note! (5) Do not use inoculants. 

Sludge acclimation and cultivation

（1）Acclimation conditions During sludge acclimation and cultivation, the growth conditions of microorganisms in the seed sludge cannot change suddenly. Usually, there is an adaptation process. Therefore, when sludge acclimation and cultivation, seed sludge from the same type of wastewater should be used as much as possible. Otherwise, conventional domestic sewage or fecal wastewater should be used as the culture water source. During acclimation and cultivation, several important indicators in the membrane bioreactor (MBR) pool should be controlled within the following ranges : COD between 500-800mg /L ,BOD between 350-500mg/L ,the watertemperature is not lowerthan 20℃ ,the dissolved oxygen is between 3-4During acclimatization and cultivation, the growth of microorganisms should be checked at any time by microscope or the COD index of influent and effluent water should be tested to adjust the acclimatization and cultivation method and judge the effect of acclimatization and cultivation. 

（2）Domestication method

① Low-throughput operation acclimation method the water flow rate of the reinforced polyvinylidene fluoride hollow fiber curtain membrane cassette (MBR cassette ) at a low flow rate of 20%-40% of the designed flow rate at the beginning of operation , and then gradually increasing the flow rate until it reaches full capacity. The increment cycle and acclimation time will depend on the actual situation.

Debugging time

Seed mud, microorganisms, water temperature, water quality conditions and debugging personnel are important factors affecting the length of debugging time. Generally, the debugging time takes 10-30 days. Notice!When the water temperature is lower than 20 ℃, inoculation, sludge acclimatization and debugging will be difficult or the debugging time will be long, so it should be avoided as much as possible.Debugging is performed under these conditions.

Normal operation of the reinforced polyvinylidene fluoride hollow fiber curtain membrane cassette (MBR cassette) with lining

the sludge is well domesticated and the effluent quality and quantity of the reinforced polyvinylidene fluoride hollow fiber curtain membrane box (MBR membrane box) are qualified, it will start to operate normally and keep corresponding operation records.

Normal operating conditions of reinforced polyvinylidene fluoride hollow fiber curtain membrane box (MBR membrane box) with lining

Project Operation Parameter Recommended Range Table

Operation and management of reinforced polyvinylidene fluoride hollow fiber curtain membrane cassette (MBR cassette) with lining

In addition to strictly following the technical manual for the normal operation of a reinforced polyvinylidene fluoride hollow fiber membrane curtain cassette (MBR cassette), the most important thing is to maintain good operating records. Operating records facilitate tracking the operating performance of the reinforced polyvinylidene fluoride hollow fiber membrane curtain cassette (MBR cassette), provide an important basis for identifying and troubleshooting faults, and also provide one of the bases for claiming warranty.

Suggested parameters to include in the run log: 

• Water temperature, pH, aeration volume, dissolved oxygen (DO), sludge concentration (MLSS), sludge settling performance (SV), sludge viscosity, excess sludge discharge in the membrane bioreactor (MBR) pool, Biochemical oxygen demand (BOD), chemical oxygen demand (COD), total nitrogen (TN), total phosphorus (TP) 

• Outlet flow rate, vacuum pressure gauge value, turbidity, suspended solids( SS ) , biochemical oxygen demand (BOD), chemical oxygen demand (COD), total nitrogen (TN), total phosphorus of the reinforced polyvinylidene fluoride hollow fiber curtain membrane box (MBR membrane box) with inner lining.