Ultrafiltration equipment is a very practical new type of equipment nowadays, and its application in daily life is very extensive and mature. Ultrafiltration technology exists in light industries such as food, medicine, textiles, drinking water, etc. As an important equipment, it is also very important to know how to maintain ultrafiltration equipment when it malfunctions. Today, the editor will take you to understand the common faults and solutions of ultrafiltration equipment.
1、 The inflow of raw water is low or the pressure is insufficient.
Possible reasons: The pre-treatment part of the ultrafiltration equipment is blocked, the inlet pressure of the ultrafiltration equipment is insufficient, and the equipment valve is malfunctioning.
Solution: Clear or replace the faulty parts.
2、 The water production of the equipment has decreased to 80% of the normal amount.
Possible causes: contamination of the ultrafiltration membrane of the equipment, deterioration of raw water quality or temperature drop that does not match the initial design of the equipment, insufficient water supply, or improper maintenance of the equipment leading to equipment malfunctions.
Solution: Clean the equipment and add medication for sterilization to solve pollution; Re analyze the water quality of the raw water or increase the water temperature, reset the equipment, and add or replace pre-treatment devices; Consult with after-sales for correct maintenance methods to avoid incorrect operations.
3、 The water quality or retention capacity of the effluent deteriorates.
Possible reasons: secondary pollution of water, deterioration of raw water quality, and incorrect selection of filtration accuracy for ultrafiltration equipment.
Solution: Disinfect, sterilize, and clean the areas where secondary pollution may occur; Re analyze the water quality of the raw water, reset the equipment, and add or replace pre-treatment devices; Reset the membrane components of the equipment.
4、 The pressure variable value suddenly increases.
Possible cause: Malfunction of the pneumatic butterfly valve.
Solution: Check the pneumatic butterfly valve and inspect the circuit.
5、 The backwash pump did not start properly.
Possible reasons: The water level in the ultrafiltration equipment's water tank or production water tank exceeds the rated height, and the water pressure in the backwash inlet section is too high.
Exclusion method: Wait for the water level of the two water tanks to drop before starting; Adjust the backwash inlet butterfly valve until the inlet pressure is less than 0.25 megapascals.
The above are some common problems with ultrafiltration equipment.