DuPont XC70 special application reverse osmosis membrane is widely used in the field of water treatment, but when there are large amounts of suspended solids in the feed water, it can have a series of adverse consequences on the performance and operation of the membrane. This article will delve into the possible problems and corresponding countermeasures of DuPont XC70 reverse osmosis membrane in the case of excessive suspended solids in the influent water.
1.Effect of suspended solids on membranes.
a.Reduced water permeability.
A large amount of suspended solids will adhere to the surface of the membrane, forming a membrane fouling layer, blocking the passage of water molecules, resulting in a decrease in water permeability. This can lead to a decrease in water yield and an increase in operating costs.
b.Increased risk of membrane fouling.
The presence of suspended solids increases the risk of membrane fouling, which can easily cause membrane fouling and scaling, and reduce the stability and long-term operation capacity of the reverse osmosis system.
2.Consequence analysis.
a.The quality of the produced water is decreasing.
The influence of suspended solids leads to the decrease of the permeability of the membrane, which increases the content of suspended solids in the permeate water, and the quality of the permeate is not up to standard, which does not meet the requirements of special application fields.
b.Membrane fouling is intensifying.
Suspended solids adhere to the surface of the membrane and form a pollution layer, which aggravates the pollution degree of the membrane and affects the normal operation of the membrane.
3.Response.
a.Pre-treatment.
A fine filtration system is set up in the inlet pipeline, and pretreatment methods such as coagulation and sedimentation, sand filtration, filter, etc., are used to reduce the concentration of suspended solids and slow down the impact on the membrane.
b.Regular cleaning and maintenance.
Establish a regular cleaning and maintenance system, and use chemical cleaning and physical cleaning methods to effectively remove suspended solids and pollution on the surface of the membrane and restore the water permeability of the membrane.
c.Intelligent monitoring system.
The intelligent monitoring system is introduced to monitor the water quality and the operation status of the membrane in real time, and once the abnormal increase in the concentration of suspended solids is detected, timely countermeasures will be taken to ensure the normal operation of the system.
In special applications, DuPont XC70 special application reverse osmosis membrane may face problems such as reduced permeability, reduced permeability and increased membrane pollution when there are a large number of suspended solids in the influent water. Through pretreatment, regular cleaning and maintenance, and the application of intelligent monitoring system, the impact of suspended solids on the membrane can be effectively mitigated and the efficient and stable operation of the system can be ensured. In practice, users should take corresponding measures according to the water quality status to prevent the possible adverse consequences of suspended solids in advance.