obstacle |
reason |
solving method |
Feed water pressure is low or into the water shortage |
UF pretreatment stuck |
Clean or replace filter materials and devices |
Ultrafiltration into the pump pressure is not enough |
replace bigger booster pump |
|
Smaller diameter |
In larger tube diameter |
|
valve obstacle |
replace valve |
|
Water rate fell by more than 20% of the initial stable water rate |
UF membrane is polluted |
For chemical cleaning and dosing of sterilization |
raw water quality deterioration |
Improve the pretreatment, to ultrafiltration water requirements |
|
Pretreatment of water shortage |
Check and improve the pretreatment |
|
Improper maintenance |
Strengthen the maintenance, and replacement of damaged equipment |
|
permeate water quality substandard housing or withholding |
Concentration polarization |
Increase thick water back flow, accelerate membrane tube flow velocity |
broken silk |
To find out the broken wires, using epoxy resin to repair; Or replace microfiltration membrane. |
|
second pullution |
Improved water post-processing |
|
Raw water water quality deterioration |
To improve the pretreatment, the microfiltration will be water requirements |
|
Filtration precision is wrong choice |
Replacement for membrane filtration precision |
|
Sudden high pressure gauge pressure |
Electric butterfly valve failure |
Check the electric butterfly valve or control circuit fault |
he original water pump is not started |
Feed water pressure is too high |
Adjusting ultrafiltration host fill valve, make the water pressure is less than 0.1 Mpa |
Ultrafiltration water tank water level is too high |
Products such as water tank water level dropped to normal before they can start |
|
Ultrafiltration water tank water level is too low |
After the original water tank water level rise to normal |
|
Backwashing pump is not workin |
Backwashing water inlet pressure is too high |
Pressure protection switch tripping, regulate the backwashing inlet butterfly valve and the inlet pressure is less than 0.2 Mpa. |
Permeate water level is too low |
Until permeate water tank rise before starting |
Shandong Zhaojin Motian Co., Ltd. 鲁ICP备12029012号-1
Common problems and treatment methods
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