Common problems and treatment methods

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